SAFETY INFORMATION CAUTIONSafety information is contained in the appropriate Thomson Consumer Electronics ServiceData. All product safety requirements must be complied with prior to returning theinstrument to the consumer. Servicers who defeat safety features or fail to perform safetychecks may be liable for any resulting damages and may expose themselves and others topossible injury.
All integrated circuits, all surface mounted devices, and manyother semiconductors are electrostatically sensitive andtherefore require special handling techniques.
Second Edition 0704 - First PrintingCopyright 2004 ThomsonTrademark(s)® Registered Marca(s) Registrada(s)Printed in U.S.A.
Prepared byThomsonTechnical Training Department, INH905PO Box 1976Indianapolis, Indiana 46206 U.S.A.
This publication is intended to aid the technician in servicing the First Series of DLPtelevision. This manual will explain the basic theory of operation of the major modules.This manual covers the AC In CBA, Formatter CBA, Audio CBA, A/V In/Out CBA andthe Light Engine along with practical troubleshooting tips and suggestions. It isdesigned to assist the technician in becoming familiar with chassis operation, increaseconfidence and improve overall efficiency in servicing the product.
Note: This publication is intended to be used only as a training aid. Never use trainingdiagrams alone to troubleshoot. It is not meant to replace service data. TCE ElectronicService Information for this instrument contains specific information about parts, safetyand alignment procedures and must be consulted before performing any service. Theinformation in this manual is as accurate as possible at the time of publication. Circuitdesigns and drawings are subject to change without notice.
FOREWORD
Page 4
CONTENTS
Introduction ................................................................................5Chassis Introduction & Electrical Overview ..............................9DLP Technology Overview .........................................................12Light Engine Overview .............................................................15AC In CBA Overview (power supplies) .....................................20DM2CR Overview.......................................................................22Formatter CBA Overview...........................................................24Audio Switching Overview........................................................26Audio Processing Overview .....................................................28Video Switching Overview...........................................................30System Control ..........................................................................32Service Tips ...............................................................................33Service Menu's & Diagnostics...................................................34
Troubleshooting.........................................................................35
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Fig. 1 DLPIntroductionThis new generation of television usesDigital Light Processing (DLP)Technology from Texas Instruments(TI) to display a high quality HDTVpicture in a lightweight cabinet. Theheart of DLP Technology is a speciallydesign semiconductor, a color wheel,and a high output light bulb. Thesedevices are housed in a cabinet that is16" deep and weights approximately100 pounds. These advantage makethe TV a pleasure to watch and toposition in most viewing locations
Improved serviceability is anotheradvantage of televisions using DLPTechnology. The set is lightweightand easy to move or place on a bench.Electrically, the set contains seven
modules. There is no componentlevel troubleshooting. Alignments arealso reduced. With DLP Technology,convergence and geometryalignments are not needed. The FirstSeries of DLP has only one mechanicaland a couple of electrical adjustments.
There are basically three advatagesabout HDTV that provides a superiorviewing experience: (1) resolution, (2)aspect ratio, and (3) digital video anddigital sound.
ResolutionResolution is measured by calculatingthe number of active lines of pixels. Aanalog NTSC television only has aresolution of about 200,000 pixels (480
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vertical pixels x 440 horizontal pixels= 211,200 pixels). The HDTV (ATSC)format is capable of more than 2 millionpixels (1,920 x 1,080 = 2, 073,600).More pixels equals more detail in thepicture. In summary, HDTV is capableof resolution that is up to 10 times theresolution of the picture on a regular,analog TV.
Aspect RatioWhen the standards were beingdeveloped for television broadcastingin 1941 by the (National TelevisionStandards Committee (NTSC), it madesense to adopt the 4 x 3 aspect ratiothat the film industry was using at thattime. The 16 x 9 aspect ratio wasoriginally developed back in the 50’sby the movie industry (also called wide-screen format). When the standardsfor ATSC were being developed bythe Advanced Television StandardsCommittee, the 16 x 9 aspect ratiowas chosen as the format for HDTV.The widescreen format made sensebecause it’s much closer to the waywe see. Our field of vision is actuallymuch wider than tall because of ourperipheral vision.
Digital Video Signal and DigitalSoundThe analog television broadcastsystem (NTSC) that has been used inthe United States for the past 50 yearstransmits signals as analog electronicwaves. These waves can sufferdegradation as the signal travels tothe receiver. Digital signals, incontrast, can be reproduced preciselybecause the images are transmittedand received digitally. This producesa signal that is capable of displayingstudio-quality video and Dolby Digital5.1 channel sound.
FeaturesThe picture sett ings can becustomized to fit viewing taste andmatch the lighting conditions wherethe unit is located by using personalpresets and/or the automatic picturequality settings: Vibrant, Natural,Cinematic. Each Input Jack can beadjusted to a different setting and theunit automatically adjusts the picturesettings to it’s unique value when thatinput is selected.
Elaborate on-screen ‘Help Text’ helpsthe user learn more about the featuresof the First Series of DLP and helpsthem to use them more effectively.
The GUIDE Plus+ System on-screenprogramming guide helps the usernavigate through hundreds ofchannels so they can quickly seewhat’s on and tune directly to a specificshow from the guide. The user canuse the ‘Sort’ feature to search listingsand can even set up reminders towatch a certain show via the GUIDEPlus+ system’s Watch menu.
Integrated ATSC Tuner with QAM
Thomson was the first to offer anintegrated ATSC tuner in its HDTV’s(no need for a set-top box to receiveand decode over the air ATSCprogramming). The new tuner in theFirst Series of DLP can also decodethe QAM (Quadrature AmplitudeModulation) digital cable signal. Thereis no need for a cable box to view non-encoded standard, digital cableprogramming.
Note: a cable box is necessary toview scrambled (encoded) and/orpremium channels.
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Fig. 2 DLP with standFireWire® with Two-WayDTVLink®The DLP will allow you to hookup andcontrol components via 1394(FireWire) cable. This is accomplishedvia the 2-way DTVLink jacks and youcan network high-speed compatible1394 digital components. The two-way jacks allow the audio and videosignals to flow in and out of the 1394components.
NetConnectWith an Ethernet connection and aweb browser built into the instrument,the internet can be accessed directly
from the TV. A high-speed connection,such as a DSL (Digital SubscriberLine) unit or cable modem is neededto use the web browser, along with asubscription to an ISP (internet serviceprovider). Digital photos can beaccessed directly from a PC anddisplay on the TV. The browser haslimitations and might not be able tointerpret all files, such as streamingaudio, video and PDF’s.
Audio SystemThe sound system has a total of 60watts total power. It has front speakerswith two 1" tweeters and two 5"
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Fig. 3 Side View
midrange drivers to create incrediblesound. A 7-band on-screen graphicequalizer allows customization of thesound quality. SRS TruSurroundprovides surround sound technologyand with two rear speaker outputs.For those who want to hook up ahome theatre audio system, there isan optical Dolby Digital output as wellas a 50-watt center channel input.
Record Output JacksBecause the VCRs in mosthouseholds are analog and can notrecognize the ATSC digital signal,recording HDTV broadcasts was notpossible without purchasing additionalequipment. For this reason a VideoRecord Output Jack and Audio OutputL/R jacks are provided on the DLP.These video and audio output recordjacks enables the recording of bothNTSC analog and ATSC digitalprogramming.
CinemaScreen™Check out the black, borderless framearound your HDTV’s screen. This isnot just a design feature— theCinemaScreen actually improvescontrast by providing a brighter,sharper picture. Feel like you’re partof the picture with CinemaScreen.Digital Light Processing, DLP aretrademarks of Texas Instruments. All otherproducts and names may or may not betrademarks or registered trademarks oftheir respective companies.
Page 9
Light Engine Lamp Power Supply
Lamp Assembly
Standby & RunPower Supply CBA
DM2CR
A/V In/Out CBA
Audio CBA
Formatter CBA
Fig. 4 First Series of DLP Light Engine Assembly
Fig. 5 ATC311 Chassis Assembly
Chassis Introduction &Electrical OverviewThe chassis in the First Series of DLP ismade up of seven (7) major modules.These include the “AC In” CBA whichcontains the Standby and Run powersupplies. The “Audio” CBA whichprocesses all audio signals. The “A/VIn/Out” CBA has the in/out jacks andalso does all the video and audioswitching. The fourth is the “Formatter”
circuit board and it is responsible forconverting the video signals into a formatthat the light engine can use. The fifthis the “DM2CR” which contains theATSC tuner, NTSC tuner and the QAMdigital cable decoder. The DM2CR alsoserves as the system control for theinstrument. The sixth module is thelight engine and seventh is the lamppower supply.
Page 10
V-SyncH-Sync
YPrPb
AC In CBA
FormatterCBA
AudioCBA
A/V In/OutCBA
StandbyPower Supply
Run (Main)Power Supply
Bridge
120VAC
DoublerRelay
DM2CR
FrontA/VIn
LeftX-over
RightX-over
+12VS
Aud-Pwr
3.3V & 2.5V
Pwr_
Goo
d+5
VR+1
2VR
+9VR
Pwr_Good
+5VR+12VR+3.3VR+2.5VR
BEP
EEPROM
RedGreen
H/V SyncV-SyncH-Sync
FSW
YPrPb
Tx/lamp_Lit
Rx/Dim
SW
+9VR
IR FPA Lite Pipe
+6VS
+12V
S
+6VS
+5VR
+5VS
SW
-5VS
+12V
R
+33V
SPw
rFai
l
On/Off
Dega
uss
BlueIV401
BV401
BV402 BW901
BW902
Chroma/LumaDRAM
IW702/03/4/ 05/06/07
BP503
4
12
14
13
5
6
7
8
10
2
15387
J24603 +21V
-21V
13
J24604
J24605
J2460216
12
4 14J24702
J24251
J24252
6 4 2 8 1314
J11903J11501
J11902
J11901
J12101
J22101
J26903
J26901
J26905
J28901
J26904
J32401
J32402J26104
J23401 J23402
IW501
J13602
J13604
J13603
J22104
J22105
1 38 13
Digital SignalProcessing
Luma
IW702/3/4
Reg
IW601IW701IW801IW901
21
7
18
2329DVI Video
5
6
2
I C_Dat2I C_Clk2
I C_Clk2
I C_Dat2
(RUN 2)
(RUN 2)
2
59
3
12
ToLightEngine
ToLampPwrSuply
ToLampDoorSwitch
ToLightEngine
Fig. 6 Chassis Block Diagram and Interconnect
Chassis Electrical Overview
There are five (5) major circuit boards inthe First Series of DLP chassis (minusthe light engine). These include the“AC In” CBA, “Audio” processing CBA,the “DM2CR”, the “A/V In/Out” CBA andthe “Formatter” CBA.
The AC In CBA provides the StandbyDC power and the Run supply DC power.Both power supplies are switch mode
power supplies and are very similar.The main difference is that the runsupply has an on/off circuit that iscontrolled by the system control microin the DM2CR.
An AC doubler on the AC In CBA isused to generate power for the lamppower supply.
Page 11
Note: A valuabletroubleshooting tip is to listenfor the lamp power supplyrelay click when AC is pluggedin. Since the relay is power bythe +12VS source, if the relaydoesn’t click this is a goodindication the standby powersupply is inoperative.
The Audio CBA is responsible for finalprocessing of all baseband audiosignals. This includes volume,equalization, balance and SurroundSound. The audio output poweramplifiers that drive the internalspeakers are also located on the AudioCBA. Audio for the audio out jacks aswell as the FAV (Front Audio Video)circuit are supplied by the Audio CBA.Power (+/-21V) for the Audio CBA isprovided by the standby supply.
The DM2CR module contains both anNTSC and ATSC tuner section as wellas the NTSC PIP tuner (see DM2CRModule Overview for more details). Thetuners are capable of processing bothdigital and analog RF signals (ATSC &NTSC) from either terrestrial or cablesources. The DM2CR is also 256QAMdigital cable compatible. The DM2CRhas 2 DTV Link connectors which are acompressed digital video inputs offeringan IEEE-1394 type video connectionfor consumer devices such as satellitereceivers, cable receivers, and digitalrecorders that meet the CEAspecifications for DTV Link. DTV Link isbetter known as 1394 or FireWire fordigital televisions. Audio and videoinformation is carried on a single wire.
The DM2CR module performs theNTSC decoding of component, SVHS,and composite video signals. TheDM2CR also recovers the teletext,closed caption and GemStar datasignals that accompany any input video.
All 1H video inputs (NTSC) includingsignals from the A/V In/Out circuit boardare up-converted to 2H by the DM2CR.The video output to the formatter CBAis YPrPb component. Any 2Hcomponent (YPrPb) that is input to theA/V In/Out CBA is routed directly to theformatter.
The audio and video in/out jacks arelocated on the A/V In/Out CBA. The A/V CBA also provides audio and videoswitching for external video and audiosignals. The auto detected 1H and 2Hvideo signal are routed via the A/V In/Out circuit board. The 1H and 2H NTSCis routed to the DM2CR for up-conversion. Any 2H component externalvideo signal is routed directly to theformatter circuit for final processing.
The formatter circuit board is responsiblefor converting the analog video fromeither the DM2CR or the analog inputsfrom the A/V In/Out circuit board into aformat that is compatible with the lightengine. All functions and circuits on theformatter circuit board is monitored andcontrolled by the system controlmicrocomputer in the DM2CR module.This is accomplished via the RUN 2 I2Cclock and data bus. The same I2C busis also routed through the formatterboard to the light engine. The 2H and2.14H external video inputs are appliedto the formatter circuit board (viaconnector BV402) where it is applied tothe BEP (back end processor) forprocessing into an analog RGB signal.The NTSC and the ATSC analog videosignal (2H) from the DM2CR is alsoinput to the formatter (via connectorBV401). The video is applied to IV401for conversion to RGB. The RGB outputfrom IV401 is then applied to the DigitalSignal processing circuits where it isdigitized and output to the light engineas DVI (Digital Video Interface).
Page 12
MMD (DLP) Technology Overview
Fig. 7 DLP Device (MMD)
Fig. 8 Micro Mirror Device(Exploded View)
Graphics, text and artwork courtesy of TexasInstruments. Digital Light Processing, DLP areregistered trademarks of Texas Instruments.
Texas Instruments Digital LightProcessing (DLP) technology providesan all digital projection display that offerssuperior picture quality in terms ofresolution, brightness, contrast, andcolor fidelity. The DLP device consistsof an array of movable mcromirrors.Each mirror is independentlycontrollable and is used to modulatereflected light. The mirror is controlledby loading data into the memory celllocated below the mirror. The dataelectrostatically controls the mirror’s tiltangle which controls whether videopasses through the projection lens andonto a screen or reflected away.
Until recently, light-valve technologiesfor projection display applications havebeen unable to take full advantage ofthe economies and stability offered bythe digital revolution. Increasing digitalcontent has been incorporated into thetransmission and signal processing
chain from source material to theprojection display light valve. Ultimately,however, the light valve itself is analogin nature and subject to analog
Page 13
limitations. The possibility of an all-digital (source-to-eye) display wasrealized in 1987 with the invention ofthe DLP device at Texas Instruments.The Digital Mirror Device (DMD) is anarray of fast digital micromirrors,monolithically integrated onto andcontrolled by a memory chip. DigitalLight Processing (DLP) systems presentbright, seamless images to the eye,with the characteristics that we havecome to expect from digital technology,namely high image fidelity and stability.DLP-based displays exhibit no lag orsmearing of the image from one digitalframe to the next. The first DLP-basedprojection display products wereintroduced to the market in April 1996.
DISPLAY OPERATIONAs shown in Figure 8, each digital lightswitch of the DMD is an aluminummicromirror, 16 micrometer square, thatcan reflect light in one of two directions,depending on the state of an underlyingmemory cell. The mirror is rotated byelectrostatic attraction produced byvoltage differences developed acrossan air gap between the mirror and thememory cell. The mirror rotation islimited by mechanical stops to ±10degrees. With the DLP cell in the onstate, the mirror rotates to +10 degrees.With the DLP cell in the off state, themirror rotates 10 degrees.
When we combine the DLP device witha suitable light source and projectionoptics, the mirror reflects incident lighteither into or out of the projection lensby a simple beam-steering action. Thus,the on state of the mirror appears brightand the off state of the mirror appearsdark. The fast switching time of themirrors enables the use of a pulse widthmodulation technique for the productionof gray scale. The DLP device acceptselectrical words representing gray levelsof brightness at its input and then outputsdigital light as optical words to the eye.Because of the short pulse duration,the optical words are interpreted by theeye of the observer as analog lightcontaining up to one billion or morecolor and gray scale combinations perpixel. Furthermore, the fast switchingtime results in a lag free image. Digitallight is accurate because the light pulsedurations are determined by the precisedivision of time. The resulting projectedimage faithfully reproduces the originalsource material and the image is stable,independent of temperature or age ofthe projector, and is free from photodegradation effects, even up tobrightness levels necessary forelectronic cinema. The tiny gapsbetween the mirrors diminishobjectionable pixilation effects andcreate a seamless image that has longbeen the hallmark of DMD-basedprojection displays.
Page 14
Fig. 9 One chip Projection System
DISPLAY CONFIGURATIONSThree configurations of DLP projectionsystems are currently beingmanufactured, differentiated by thenumber of chip, one, two, or three.First Series DLP uses a one chipconfiguration. Figure 9 shows asimplified example of a one-chip system.The configuration choice depends onthe intended market application and isbased on a tradeoff between light
utilization efficiency, brightness, powerdissipation, lamp technology, weight,volume, and cost. The single-chipprojector is self-converged, lower in cost,and permits the very lightest portabledesigns.Graphics, text and artwork courtesy of Texas Instruments.Digital Light Processing, DLP are registered trademarks ofTexas Instruments.
Page 15
Driver CBA
Light Tunnel
DLP Device
Fig. 10 DLP Light Engine
Fig. 11 DLP Light Engine
Light Engine OverviewThe imager in the light engine is a singleDLP device with an array of 1280x720(921,600) micro-mirrors. Another partof the light engine is the color wheel thatis used to sequentially display red,green, and blue images on the imager.The light engine contains a Driver circuitboard that contains the TI chipset.
Alignment information is stored in aEEPROM located on the engine driverboard. These alignments include colortemperature and color wheel index.
Two cooling fans are located in the lightengine, one for the DMD device andone for UHP (Ultra High Pressure) lamp.
Color Wheel Operation
The color wheel contains 6 segments; 2reds, 2 greens, and 2 blues and spins ata rate of 120Hz (7200 RPM). Thismeans for every incoming 60Hz framefrom the chassis, 12 color sub framesare displayed on the imager at a rate of720Hz.
Page 16
Fig. 12 DLP Light Engine Block Diagram
Inputs to Light Engine
The inputs to the light engine includethe Power Supplies (+2.5VR, +3.3VR,+12VR, +5VR).
The Power_Good signal is an activehigh signal which indicates that all runsupplies are at an acceptable level.This signal is used to give the engine anadvance warning that the supplies aregoing down in case of an AC loss. ThePower_Good signal must go low aminimum of 1ms prior to the suppliesdropping so that the light engineprocessing circuitry can park the mirrorsin a reliable state prior to power loss.Another input is the DVI encoded videofrom the formatter circuit. Control of thelight engine is accomplished via the I2CRun 2 data bus from the DM2CRmodule.
Cooling fans
The lamp and DLP device cooling fansare powered by the light engine driverboard. The DLP device fan speed isvaried depending on the reading atemperature sensor in the light enginedriver module. The temperature ismonitored by the DM2CR by reading atemperature sensor via the I2C bus. Atnormal room temperature the fanvoltage should be about 8V, but willrise to a maximum of 12V as the roomtemperature rises. The lamp fan runsat 8 Volts at all times. Fan rotation ismonitored by DM2CR. When a stoppedor locked fan is detected the DM2CRshuts down the instrument down andfan error codes are logged.
LightEngine
DLPDriverCBA
LightEngine
Housing
CWMotor
Temp Sensor
Mtr1Mtr2Mtr3
CW Index H
CW Index L
Lamp Fan
DMDFan
FanDrive
LVDS_B
LVDS_A
Fan PWM
Lamp_en
ThermalCut OffSwitch
DLPProcessing
Pwr_Good+5VR+12VR+3.3VR+2.5VR
Fan Detect
I C_Clk2
I C_Dat2
RDRAM
FLASHEEPROM
Bus ExpDVI Rx
DDP1010
J1
J2
J7
J8
P1
J4
To Lamp Pwr Supply
LampOnJ5
FromLampPwrSupply
Tx0Tx1Tx2TxC
DVI VideoFrom Formatter CBA
J3Thermal Cut Off
DLPDevice
(RUN 2 Bus)
Page 17
Power
Power_Good
TI_Reset
Ballast_Lamp_en
Ballast_Txd_Lamplit
User_Lamplit
DDP1010 State
DMD State
Reset Init CW Init Lamp Reset Init I2C I2C Delay UnparkMirrors
Running
Mirrors Parked Display Image
Fig. 13 DLP Light Engine Startup Sequence
Light Engine Start upFigure 13 shows the start-up sequenceof the light engine. The light enginetakes approximately 10 seconds to powerup and display a picture after the powerbutton is pressed. It takes nearly 25seconds for the lamp to increase to fullbrightness.
1. The ACIN run suppl ies(5VR,9VR,12VR) and the Power_Good areturned on. These are fed from theACIN board (P24702) to the formatterboard (BP503). The formatter boardgenerates 3.3VR and routes it alongwith the other supplies on connectorBW902 to the light engine connectorP1. These voltages can be measuredat connector BW902 on the formatterboard: Pin 2 (5VR), Pin 3(Power_Good ~ 3.3Vdc), Pin 5(2.5VR), Pin 9 (3.3VR) and Pin 12(12VR). The DM2CR micro thenbrings the DLP processing circuitryout of reset by writing to the lightengine bus expander IC.
2. Once the DLP processing circuitry isbrought out of reset the processingcircuit micro, DDP1010, on the lightengine driver circuit begins
initialization. The first step is to startthe color wheel spinning. This takesapproximately 3 seconds until thecolor wheel locks up at (7200 RPM).
3. When the DLP processing circuitrysenses the color wheel is spinning, itwill strike the lamp by activating thelamp_en signal to the lamp ballastboard. This is a DC voltage and canbe measured on connector J4 (4) onthe Light Engine driver board. In thestandby mode the voltage is ~0 volts.After the color wheel is spinning thevoltage increases to 5 VDC and thebulb begins to light. With the screenlit the voltage will be 2.5 ~ 3.25 VDC.
4. The DM2CR microprocessor polls theBallast_lamplit input pin signal fromthe light ballast via connector J4(1) todetermine if the bulb has beensuccessfully lit. When the microdetects this signal, it then “passes” italong to the DLP processing circuitryby outputting the User_Lamplit signal.
5. When the DLP processing circuitrydetects the User_Lamplit signal, itdoes a soft reset and is ready toreceive I2C commands from theDM2CR and to display video.
Page 18
Lamp Start-up-Cool DownWhen the set is tuned off via the powerbutton or remote, the unit displays a bluescreen and slowly dims the screen leavingthe lamp and power supplies on for about20 seconds. During this 20 secondinterval the user can turn the set back onimmediately in case he inadvertently shutit off (refer to Fig. 14). After the 20second interval, the lamp and DLP fanare turned off but the run supplies andlamp fan are left on for an additional 2minutes to allow for lamp cool down.
After the lamp is turned off, the user willnot be allowed to turn the set on for 30seconds. If he tries to the power LED willflash which indicates the lamp is in cooldown mode.
UHP (Ultra High Pressure) lamps can bedamaged during a “hot strike” (when thelamp is turned on before it has had achance to cool down from the previouson time). Because of this issue thefollowing sequence is used to power upand shut down the lamp.
Sights & Sounds of Startup1. AC Plug In:
A. Relay K24251 located on the power supply board, ACIN, clicks indicatingthat standby supplies, +/-5Vdc, +12Vdc, +6Vdc, +33Vdc, are up and running.
B. Power LED and Porch Light illuminate: DM2CR is booting up, this takesapproximately 30-45 seconds.
C. Power LED Off: DM2CR has successfully booted up and is in standby mode.2. Press Power On: Power LED turns on and the DM2CR relay clicks.3. The run power supplies are turned on (5VR, 9VR,12VR on the ACIN board and the
3.3VR from the formatter board). Power_Good line goes high when supplies arestable.
4. The Color Wheel starts, taking approximately 3 seconds before it locks in @ 7200RPM. When the Color Wheel is spinning, the Lamp strikes. The lamp becomesbrighter and brighter taking approximately 10-20 seconds for the lamp to reach fullbrightness.
5. The Lamp and DLP fans turns On: The DM2 micro reads the Ballast_lamplit inputpin. This signal comes from the ballast and indicates that the lamp has startedsuccessfully. When the micro detects this signal, it then “passes” it along to theDDP1010 by writing the User_Lamplit signal. The fans are turned on by theDDP1010 by it writing the “high pulse width” bytes to PWM0 (Lamp fan) and PWM1(DLP fan).
BW902-Formatter P1-Light Engine Description Pin # Voltage Pin # Ground 1 0 12 5 VR 2 5 Vdc 11 Power Good 3 3.3 Vdc 10 Ground 4 0 9 2.5VR 5 2.5Vdc 8 2.5VR 6 2.5Vdc 7 Ground 7 0 6 Ground 8 0 5 3.3VR 9 3.3Vdc 4 3.3VR 10 3.3Vdc 3 Ground 11 0 2 12VR 12 12Vdc 1
J4 Connector-Light Engine Pin Description VDC
off VDC
At turn-on VDC run
1 Ballast Lamp Lit L H (5v) L 2 Ground L 0 0 3 5VR 0 5 5 4 Ballast Enable Line 0 5 2.5~3.25
5 5VR 0 5 5
Page 19
Fig. 14 DLP Lamp Startup-Cooldown
PowerReturn
30 SecTimer **
20 SecTimer *
** If Power On is pressed during the 30 sec Cool timer, the Power LED blinks.
* If Power On is pressed during the 20 sec Lamp Standby timer, the set returns to normal operation immediately.
Cool Down'Lamp Off-Fans On'
Video 10 SecFull Bright 25 Sec
Display Mode Lamp Standby
TV & LampOff
(Fans Off)
30 SecTimer
PowerLoss
Fans Off
PowerOn
Lamp OnVideo On
Lamp On-Vid/Audio Mute
Pwr On
Power Off
≈≈
≈≈ ≈
2 MinTimer
Power On: The UHP (Ultra HighPressure) lamp can be damaged or it’slife span shortened by turning it on whilehot (a hot strike). For this reason, multipleprotective measures have been taken inthe form of multiple timers. When thePower button on the front panel or theremote control is pressed, the TV & theLamp turns on immediately.
Display Mode: Both the lamp and thevideo and audio are turned on immediatelywhen the power button is pressed. Whenthe unit is powered on, video can be seenin approximately 10 seconds, howeverfull brightness takes approximately 25-30 seconds due to lamp warm-up time.
Power Return: In the case of a poweroutage, when the power returns a 30second timer is activated. The unit willnot turn back on before the 30 secondshave timed out because the systemdoesn’t know if power was lost for 10seconds or 10 minutes, therefore thesystem must ensure that the lamp hascooled before turning on.
Lamp Standby: Whenever the unit ispowered off, video is immediately ‘blanked’but the lamp remains on. A 20 secondtimer is activated. This is done in case thecustomer accidentally turned off the unit orhas changed their mind. If power on ispressed before the 20 second timer runsout, video is immediately unblanked.
Lamp Cool-Down: After the standbytimer expires (20 seconds), the lamp isturned off and enters the Cool-Downmode. When the lamp is turned off twotimers are activated. The first is a 30 sec.timer that prevents the instrument frombeing turned on until the cool-down timerhas expired. After 30 seconds, the unitcan be powered up again. If the PowerOn is pressed before the 30 second cooldown timer has expired, the Power LEDblinks slowly. It’s important to realizethat this is normal and is done to protectthe lamp. After the 30 seconds cooldown timer expires the unit will startnormally. The second is a two minutetimer that keeps the lamp fan running tocool the lamp if the unit is left off.
When the set is tuned off via the powerbutton or remote, the unit displays a bluescreen and slowly dims the screen leavingthe lamp and power supplies on for about20 seconds. During this 20 secondinterval the user can turn the set back onimmediately in case it was inadvertentlyshut off. After the 20 second interval, thelamp is turned off but the run suppliesand lamp fan are left on for an additional2 minutes to allow for lamp cool down.After the lamp is turned off, the user willnot be allowed to turn the set on for 30seconds. Attempting to power on theinstrument will cause the LED to flashindicating the lamp is in cool down mode.
Page 20
AC In CBA Overview
The standby and main (run) powersupplies are located on the AC In circuitboard. The standby supply is onwhenever the unit has 120V AC applied.A voltage doubler is also located on theAC In CBA. This doubler produces thehigh voltage that is required for the lamppower supply. The relay that routes theAC to the doubler is the relay that isheard when the unit is plugged in. Therelay is operated by routing the +12VSvoltage through the lamp door switch.This is a safety feature that shuts off the
lamp and supply when the customeraccessible lamp door is opened.
The outputs of the standby supplyincludes +/- 21V for the Audio circuitboard, +6VS, +5VS, -5VS, +12VS and+33VS to the DM2CR. A power fail(PwrFail) signal is generated by thestandby supply and is routed to theDM2CR is the event that AC is lost orthat supply malfunctions. The PwrFailsignal is an early warning for the DM2CRto perform emergency shutdownhousekeeping procedures.
Fig. 15 AC In CBA Block Diagram
AC InCBA
LampDoor
Switch
StandbyPower Supply
Main (Run)Power Supply
Bridge
DoublerRelay
+12VS
Pwr_
Goo
d+5
VR+1
2VR
+9VR
SW
+12V
S
+6VS
+5VR
+5VS
SW
-5VS
+12V
R
+33V
SPw
rFai
l
On/Off
13 7
+21V
-21VJ24603
120VAC
5
13
J24604
J24605 J2460216
12
4 14J24702
J24251
J24252
21
J13101
21
6 4 2 8 1314To DM2CR To
AV In/OutCBA
ToFormatter/Driver
CBA
+6VSTo
DM2CR
ToAudioCBA
ToLamp
PwrSupply
On/
Off
Page 21
The main (run) supply provides the+5VR and the +12VR that is required bythe A/V In/Out circuit board. The +9VR,+12VR, +5VR and the Power_Goodsignal are generated by the run supply.The Power_Good signal informs thelight engine (via the formatter CBA) that
all run voltages are nominal. This signalgoes low if the run supply turns off. Thisallows the light engine to performpreshutdown house keeping functions.The run supply is turn on via the On/Offsignal from the DM2CDR (via connectorJ24605-13).
Fig. 17 AC In CBA Service Position
Fig. 16 AC In CBA
Standby & RunPower Supply CBA
Page 22
(2H, 2.14H)
J22105
OSD
VertHorz2H Pr
2H Pb
2H Y
RecOut
1H CVFilter/BufferSD Video
TL851
D1_Out
GPIP
Buffers
HD VideoFilters &
Pr_OUT2Pb_OUT2C_OUT2Y_VOUT2
Pr_OUT1Pb_OUT1
C_OUT1Y_VOUT1
J22104
DM2CR
NTSCPip Tuner
ATSC Tuner& NTSC Main
Tuner
FSW
DEINT_VDEINT_H
DEINT_PrDEINT_PbDEINT_Y
PIP_CVMain CV31
2923
2725
12181416
1257913
U23501
R-OutL-Out
U11603Audio AUD_L
SWITCH_RSWITCH_LAUD_R
4.5MHzBPF
VSBDecoder
1
35
7
J22104
To/FromA/V In
Out CBAToFormatterCBA
To/FromAV InOut CBA
DigitalVideo
VideoDecoder
9 Bit
U22500
ATSCNTSC Audio
NTSC
SWITCH &SPLITTERAnt A
Ant B
ATSCAudio
256 QAMDecoder
DTVDecoder
(2)1394
FirewireInput
Fig. 18 DM2CR Module Block Diagram
DM2CRCR Module Overview
The DM2CR module has 2 RF inputslabeled ANTENNA A and B. Antenna Ais input to a Tuner/IF module thatcontains a tuner section and dual IFsection. The tuner is capable ofprocessing both digital and analog RFsignals (ATSC & NTSC) from eitherterrestrial or cable sources. The tuneris a single conversion, electronicallyaligned tuner with improved cross-modulation, UHF image rejection, andlocal oscillator phase noise performanceover previous tuners. Performance istailored to handle the predicted signalenvironment during transition to digitalterrestrial television (HDTV) service,256QAM digital cable, as well as
providing “cable ready” NTSCperformance as specified by the FCC.Antenna B input is the PIP tuner and isNTSC only.
The DM2CR has 2 DTV Link connectorswhich are a compressed digital videoinputs offering an IEEE-1394 type videoconnection for consumer devices suchas satellite receivers, cable receivers,and digital recorders that meet thespecifications for DTV Link. DTV Link isbetter known as 1394 or FireWire fordigital televisions. Audio and videoinformation is carried on a single wire.
Page 23
Fig. 19 DM2CR Module
DM2CR
A/V In/Out CB
Audio C
DM2CR
The DM2CR module contains a GPIPIC (U23501) and performs the following:
• NTSC processing
• ATSC decoding
• Process YPrPb
• Process S-Video
• Decode Y+C
• Adaptive combing ofcomposite video
• Performs PIP function
• Recover Teletext, closedcaption and Gemstar data
• Digitize all 1H video inputs
• Outputs digitized YPrPb
TL851 is an video decoder, displayprocessor with scan rate converter. For1H video inputs, the output will be up-converted to 2H 480p and the displaywill be locked to the incoming video.The TL851 recovers HDTV video signalsin YPbPr format from digital bit streamsoutput from the VSB (visidual side band)decoder and processes them for display.The HD output will be YPrPb, either1080i, for HD inputs (1080i, 1080p, or720p) or 1920x480p for SD (standarddefinition) inputs. The TL851 alsogenerates the text and graphics for theOSD (on-screen display). The TL851outputs two types of video, Analog SDvideo (2H NTSC), Analog ATSC video(YPrPb) along with the appropriateaudio. The HD video output providedto the chassis consists of YPrPb,Horizontal and Vertical sync signals.
Page 24
Fig. 20 Formatter Block Diagram
Formatter Module Overview
The formatter circuit board is responsiblefor converting the analog video fromeither the DM2CR and analog inputsfrom the A/V In/Out circuit board into aformat that is compatible with the lightengine. DC power for the formattercircuit board as well as the light engineis supplied by the main (run) powersupply located on the AC In CBA. Thesesupplies include +5VR, +12VR, +3.3VRand +2.5VR. A Pwr_Good from the runsupply is routed through the formatterCBA. This signal tells the light enginethat supplies are at nominal value. Allfunctions and circuits on the formattercircuit board are monitored andcontrolled by the system control
microcomputer in the DM2CR. This isaccomplished via the RUN 2 I2C clockand data bus. The same I2C bus is alsorouted through the formatter board tothe light engine.
The 2H and 2.14H external inputs alongwith sync are applied to connectorBV402. Next it is applied to the BEP(back end processor) for processinginto an analog RGB signal. The NTSCand the ATSC analog video signal (2H)from the DM2CR is applied to connectorBV401. The video is also applied toIV401 for conversion to RGB. The RGBoutput from IV401 is then applied to theAnalog to Digital (A/D) converter IW601.
V-SyncH-Sync
YPrPb
Formatter CBA
Dual DC-DC3.3V/2.5V
Pwr_Good
+5VR+12VR+3.3VR+2.5VR
BEPA/D Lun-IC
FPGA
EEPROM
ChromaDRAM
RedGreen
Blue
H-Sync
V-SyncV-SyncH-SyncFSW
YPrPb
Red
Grn8
8
8
LumaDRAM
Vert
Tx0
Tx1
Tx2
TxC
A/D Clk
+9VR
Blue
DVIOutput
DigitalRGB
(720P)IW701IV401
IW601
IW801DVITx
IW901
BV401
BV402
BW901
BW902
IW705/6/7IW702/3/4
BP503
2
4 5
7
9
3
12
12
146
18
23
2
68
9
10
5
2
15387
2222
48bit Vidto
24bit Vid720P
IW501
1 38 13
ToDLP
DriverCBA
ToDLP
DriverCBA
From AC In CBA
FromA/V In/Out
CBA(Ext 2H &
2.14H)
I2C_DAT
I2C_CLK
FromDM2CR
(2H)
InternalAnalog
ATSC &NTSC
(RUN 2)(RUN 2)
24bitVid
720P
Page 25
Fig. 21 Typical Formatter Input/Output Waveforms
It’s output is 8 bit digital red, green andblue video data stream. This digitalvideo is next applied to the Lun-IC,IW701. IW701 converts the threeseparate digital video streams to a 48bit 720P digital RGB signal. This 48 bitsignal is then processed by the FPGAIC IW801. The output from IW801 is a24 bit 720P signal that the DVItransmitter can use. The DVI transmitterIW901 converts the 24 bit signal to theDVI format. These outputs exit theformatter circuit board via connector
BW901 and are sent to the light engine’sDVI receiver. The DVI transmitter andreceiver incorporate HDCP (HighBandwidth Digital Content Protection.The HDCP encryption format covers allhigh bandwidth applications such ascomputers, DVD players and HDTV(ATSC). Whenever the connectorBW901 is disconnected the DVItransmitter turns off. This is done toprotects against and prevents any videopirating. Refer to "Service Tips" formethod of checking (scope) the DVIoutput of the Formatter CBA.
Pr PbY
DVI Video Waveform
BV401-14 BV401-10 BV401-12
BV901-18/9/2/23
Page 26
Audio Switching Overview
The A/V In/Out circuit board is brokendown into it’s two (2) basic functions;these are audio switching and videoswitching. The audio switching circuitryfor the external audio inputs are locatedon the A/V In/Out module. Sourceselection for DVI audio and the analogexternal audio inputs including FAVaudio jacks is provided by the audioswitching IC U26901. The audioswitching is controlled via the I2C RUN1 bus from the DM2CR module. Alsothe DM2CR module performs
demodulation of the audio from off-airsources (NTSC and ATSC). These offair baseband audio sources from theDM2CR is routed through the A/V In/Out circuit board to the Audio board forfinal processing. The external audioinput jacks are located on the A/V In/Out circuit board. L/R inputs includeaudio from Aux1, Aux2, Aux3, Aux4and DVI. The Front Audio Video (FAV)panel has one set of L/R audio jacksthat is applied to the switching IC
Fig. 22 Audio Switching Block Diagram
U26901
J26903
SEL_
AUD
_L
SWIT
CH
_R
59
61
J26901
SWIT
CH
_L
SEL
_AU
D_R
3735
179
7270
Aux R Audio (X4)Aux L Audio (X4)
DVI_1 AUDRDVI_1 AUDL
J26905
2
5
7
3
1012
1357
A/V InputOutput CBA
FAV AUD IN RFAV AUD IN L
FAV H-P LFAV H-P R
AUD_L
AUD_R
To/From DM2CR
FAV Headphone RFAV Headphone L
To/FromAudioCBA
J26904
4
2
6FromAC InCBA
+12VR
+5VR
+12VS
21 22
9724
Aud/VidSwitch
42
43I2C_DATI2C_CLK
I2 C_D
AT
I2 C_C
LK
(RUN 1)
(RUN 1)
(RUN 1)
(RUN 1)
Page 27
Fig. 23 A/V In/Out CBA Service Position
U26901. The selected baseband audiosignal output from U26901 is loopedthrough the DM2CR module and backto the A/V In/Out CBA where it then sentto the audio processing circuit board.The FAV Headphone L/R audio fromthe Audio board is simply routed throughthe A/V In/Out board to the FAV. Whenthe DVI audio input is selected it is
routed to the DM2CR for decoding intoanalog audio and is then routed backthrough the I/V In/Out CBA and on tothe Audio circuit board for finalprocessing. Power supplies for the A/VIn/Out board include the +12VR, +12VSand +5Vr and is supplied by the AC InCBA.
Page 28
Fig. 24 Audio Processing Block Diagram
AUDIO CBA
J11501
5
7
2
3
10
12
FAV_Headphone_R
FAV_Headphone_L
TRUSUR-ROUND
U11701
15 16
10
9
R_AUD
L_AUD
PA_R
PA_L
PowerAmp
SW11902
7
11
8 6
711
93
U11501
BUSEXPDR
3
411121315
FAV_SPKR_MUTESUB_CONTTRUSPA_MUTE
U11801AUDIO
TR
TL
MDL
MDR
CDR
CDL
VOLEQUBAL
42
43
1
44
41
40
2019
26
28
CTL
AMP
U1155175
12
24
U11490
6
7
3
1
AudioOUT
7
1U11460
3
5
R_OUT
L_OUT
R
L
U11702
7
13
5AMP
LR
IntSpkr
ExtSpkr
CntrSpkr
SubWoofer
To/FromA/V InputOutput
CBA
I2C_DAT
I2C_CLK
I2 C_D
AT
I2 C_C
LK
I2C(R
UN
1)
(RU
N 1
)
(RUN 1)
(RUN 1)
Audio Processing OverviewAll of the audio circuitry is located onthree assemblies. The audio switchingand the audio jacks are located on theA/V In/Out CBA. The DM2CR moduleperforms demodulation of the audiofrom off-air sources (NTSC and ATSC).The Audio circuit board performs thebase-band audio processing such asvolume control, graphic equalizer,subwoofer output, and poweramplification along with speakerswitching. The audio circuit board alsocontains the SRS and Tru Surroundfeature processing circuitry.
The analog audio from the DM2CR isrouted back to the A/V IN/OUT boardwhere it is cabled to the Audio board.There it is input to a differential amplifier,U11551. This amp is used to eliminateground loops caused by the long cablerouting. The output of U11551 is fed to
the input of the SRS/FOCUS processingblocks, U11701 & U11702, and directlyto one input of the audio processor,U11801. The processor selects one ofthree inputs, the direct signal (no SRS)from U11551, Regular SRS orTruSurround from U11701 or SRS/FOCUS from a combination of U11701and U11702.
The analog input for the SRS/TruSurround circuit is taken off theoutput of the amplifier, U11551. Theseproduce two signals which are sent toinputs on the audio processing IC,U11801, along with the direct signal.The processor IC selects which inputsignal is required for the customer-selected mode. The first block,composed of IC U11701, performseither Regular SRS or TruSurround.The second block, composed of ICU11702 performs “Focus” mode.
Page 29Fig. 25 Audio Processing CBA Service Position
Regular SRS mode is selected by usingthe midpoint of the output of the SRSblock and placing it in Regular mode.Focus is always on but its output isn’tselected. SRS Focus mode iscomposed of Regular SRS plus Focus.The SRS block is placed in Regularmode and the Focus output is alsoselected.
TruSurround mode is selected byplacing the SRS block in TruSurroundmode and using its output. The audioprocessor (U11801) has three inputsignals applied to the selector, directaudio from U11551, SRS from U11701and Focus from U11702. After thesignal is selected in the processor,volume control is applied. The DLPsystem does not have a separate tonecontrol function but a 7-band graphicequalizer is available. After theequalizer, L and R signals are summedand split off to form two signal paths.The summation stage output signalsare run through a highpass filter for themain channels, and a matching lowpassfilter for the subwoofer. The subwoofervolume is therefore controlled by themain volume, but a fader is provided inthe subwoofer path (accessed by the“Subwoofer Level” menu) so that it’slevel may be adjusted relative to the
main channels. Three analog outputsfrom the processor provide the Left,Right, and subwoofer signals.
The PA_L and PA_R audio signals fromthe audio processor are routed to threecircuit areas, first to U11460, whichdrives the HiFi Output jacks located onthe Audio module, second to the mainpower amplifier, U11901 and third tothe headphone amplifier, U11490.
The output of U11490 is routed throughthe A/V IN/OUT module to theheadphone jack which is located on theFAV module. The subwoofer outputfrom the processor is routed toconnector, J11801. The subwooferamplifier module plugs into thisconnector. Also present on theconnector are two control lines thatsense the presence of the subwooferoption and turn the amplifier and powersupply off and on.
As mentioned previously the Audiomodule also contains a busexpander,11501, that is connected tothe system microcomputer inDM2CRvia the I2C bus. The bus expander onthe Audio Module uses its ports to selectthe following functions, FAV SpeakerMute, SubWoofer Control, SubWooferDetect and Power Amp Mute.
Page 30
49
505254575860
62
J26903
J26901
Switch1H Video
U26901
Pr_OUT2
Pb_OUT2C_OUT2
Y_VOUT2
Pr_OUT1
Pb_OUT1
C_OUT1Y_VOUT1
7168
30
322823
862
75
Main CV312923
2725
12181416
ToDM2CR
(External 2H& 2.14H)
J28901
5
4
2
3
1
343335
SwitchVideo
2HU28901
2322252627
HD_YHD_PBHD_PRHD_HHD_V1
2468To
FormatterCBA
8384
64
6534 Combed C
Combed Y
Sel. CVU16301
FAV CFAV Y
FAV CV
Aux Pb (X2)Aux Pr (X2)Aux Y (X2)
Aux Y/C (X2)
Aux CV (X4)
5/6
U22201
J22201
A/V Input/Output CBA
19
18
31
26
23
DVI_VSYNC
DVI_HSYNC
DVI_BDVI_G
DVI_R
TXC (+/-)
DVI ReceiverDVI
Input48/49RX2 (+/-)
51/52RX1 (+/-)
2/3RX0 (+/-)
1/2
9/10
17/18
23/24
FrameComb
93
30 31 15 14
4243I C_Dat2
I C_Clk2
I C_Dat2I C_Clk2 I C_Dat2I C_Clk2
46
47
I C_Dat2
I C_Clk2
6
10
12
(RUN 1)(RUN 1)
(RUN 1) (RUN 1)
(RUN 1)
Fig. 26 Video Switching Block Diagram
Video Switching OverviewThe A/V In/Out circuit board is brokendown into it’s two (2) basic functions,video switching and audio switching.The A/V In/Out circuit board has externalinput jacks that accepts four CompositeVideo (CV), two S-Video, twocomponent video (YPrPb) and one DVIdigital video. The video inputs on the A/V In/Out board can be either 1H NTSC,2H NTSC or 2.14H NTSC. The Front A/V (FAV) panel has one component videoinput as well as a S-Video connectorwhich is routed through the A/V In/OutCBA.
The A/V In/Out CBA also has a DVIinput. DVI (Digital Video Interface)combined with HDCP (Hi-BandwidthDigital Copy Protection) creates a newuncompressed protected digitalinterface (called DVI-HDTV) for hookingan HD Monitor to a Video Source (forexample, a set-top box or DVD player).This interface is not only uncompressed,but it is also high speed (3.96 GB/s)making it a perfect solution when thebest picture quality and minimal signalloss are required.
Page 31
Fig. 27 A/V In/Out CBA Service Position
The DVI receiver IC U22201 decodesthe DVI video and then outputs RGBwith horizontal and vertical sync. Thissignal is then applied to U28901 forswitching and matrix conversion toYPrPb. This YPrPb video is then routeddirectly to the Formatter circuit board.The switching for NTSC/1H sources(composite, S-Video, and component)is provided by IC U26901 for rear inputjacks and the FAV jacks. All videoswitching IC’s are monitored andcontrolled via the I2C bus.
A frame comb filter is provided tooptimally comb any composite sourceinto an S-Video (Y/C) output sourcewhich is routed back into U26901. Allcomposite and luma inputs to U26901have sync detectors that are readablevia the I2C bus which allows for automaticsource detection. Source selection forHD/2H/2.14H sources (component andDVI) are provided for rear inputs (2component and 1 DVI) with the ICU28901. This IC is a 4-input videoswitch with signal format detection.
Page 32
Fig. 28 AC System Control Block Diagram
DM2CR
Sys ConU13100
A/V In/Out AudioProcessing
FormatterLight
EngineJ22105
J22104
J26903 J26905 J11501
BV401 BW901
J5
Clk
Dat
Run1
Run21011
45
23
67
2021
Clk
Dat
2021 3
2I2C
I2CI 2C
I2C
System Control Overview
The system control microcomputer for the HDLP50W151 is IC U13100 and islocated in the DM2CR. The system control micro is responsible for monitoring andcontrolling the A/V In/Out CBA, the Audio Processing CBA, the Formatter circuitboard and the Light Engine. There are two busses, the Run1 buss and the Run2buss. The Run1 buss controls the A/V In/Out CBA and the Audio CBA. The Run2buss controls the Formatter and Light Engine. It’s important to realize that if theDM2CR does not see the Formatter and/or Light Engine the DM2CR goes into whatis referred to as a “Stand Alone Mode”. In this mode the DM2CR will output videoeven if the Formatter and/or the Light Engine has failed. If the Run2 I2C buss ispulled low by a failed light engine, the I2C buss will return on the formatter circuitboard if connector BW901 is disconnected. If disconnecting BW901 does not returnI2C operation then the formatter circuit board is responsible for pulling down the I2Cbuss. The photo below indicates a convenient point to check the I2C buss.
Fig. 29 Formatter I2C Test Point Location
Page 33
Service Tips.
1. If light engine has entered ‘cool down mode’ (30 sec timer), Power LED blinksslowly 3 times if power on button is pressed. Unit will turn on after timer hasexpired. See “Lamp Startup/Shutdown Flowchart”.
2. When AC is applied, instrument will not respond for 50 to 60 seconds. TheDM2CR module must boot-up and perform internal diagnostic.
3. The lamp cooling fan and the DLP device fan operates whenever the unit is turnedon. If failure in fan circuit occurs, unit starts up normally (with video) then shutsdown.
4. Before replacing light engine, always confirm picture quality issues by accessingthe test patterns in the service menu 80. All patterns accept the checker boardare generated by the formatter CBA. The checker board is generated by the lightengine.
5. The “Safety Interlock Switch” must bypassed whenever the rear cabinet isremoved for service (see photo below). The connector can jumped or the switchcan be taped closed.
Jumper with alligator clip
Page 34
Service Menus & DiagnosticsService menus and diagnostics procedure are critical to effectively diagnose failuresand problems in the instrument. The following is a summary of the HDLP50W151service menus.
Service Menu (V:76): Turn instrument on, then press and hold Channel Down &Menu simultaneously. Next, select Service Alignment in menu, then volume Up toV:76 then Channel Up and Down to desired adjustment. After selecting adjustment,Volume Up/Down changes value of adjustment. Press off to exit.
Test Patterns (V:80): Enter service menu and volume up to V:80. Channel up tothe patterns. The skip button toggles the pattern and the menu button togglesbetween the pattern and normal video. To exit, press the off button.
Usage Clock (V:90): Enter service menu and volume up to V:90. Channel up forusage clock. Press off to exit.
Error Codes (V:50): Enter service menu and volume up to V:50. Channel upfor first failure code. Channel up for next of 8 failure codes. Pressing clearremoves error code. Last error is most recent failure code. I.E: if four (4) errorsare listed, four is the most recent. To exit, press the off button.
6. To scope the DVI output of the formatter CBA see test points in photo below. Donot disconnect the DVI connector or the transmitter on Formatter will turn off. Seepage 25 of training manual.
Use formatter case as ground Typical Waveform
Page 35
DLP Light EngineThe following information describes the normalstart-up and cool down sequence of the DLP LightEngine. Understanding how the light engine startsand stops will help in troubleshooting the instrument.
Turn-on Sequence1. AC Plug In:
A. Relay K24251 located on the ACIN boardclicks indicating that standby supplies, +/-5VS, +6VS +33VS, are up and the 300 Vsupply is present at connector X1 on theLight Ballast power supply.
B. Power LED and Porch Light illuminate:DM2CR software is booting up, this takesapproximately 30-45 seconds.
C. Power LED Off: DM2CR has successfullybooted up and is in standby mode.
2. Press Power On: Power LED turns on and theDM2CR internal relay clicks.
3. The ACIN run supplies are turned on (5VR,9VR,12VR). These are fed from the ACIN board(P24702) to the formatter board (BP503). Theformatter board generates 3.3VR and routes italong with the other run supplies on connectorBW902 to the light engine connector P1. Thesevoltages can be measured at connector BW902 onthe formatter board: Pin 2 (5VR), Pin 3 (Power_Good~ 3.3Vdc), Pin 5 (2.5VR), Pin 9 (3.3VR) and Pin 12(12VR).
4. The Color Wheel starts turning takingapproximately 3 seconds before it locks in @ 7200RPM.
5. The lamp_en signal, 5Vdc, on the Light Enginedriver board J4 (4), is sent to the lamp ballast board
DLP Service & Troubleshootingwhich strikes the lamp. It takes approximately 10-20 seconds for the lamp to reach full brightness.The DC voltage decreases to 2.5 ~ 3.25Vdc.
6. The Lamp and DLP fans turn On. The DM2CRmicro reads the Ballast_lamplit input pin J4 (1) onthe light ballast. This signal comes from the ballastand indicates that the lamp has started successfully.When the DM2CR micro detects this signal, it then“passes” it along to the DDP1010 by writing theUser_Lamplit signal. The fans are turned on byDDP1010 writing the “high pulse width” bytes toPWM0 (Lamp fan) and PWM1 (DLP fan). Theconnectors J1 (1) (Lamp Fan) supplies 8 Vdc tocool the bulb. The DLP fan is connected to J7 (1)(DMD Fan) and supplies 8 ~12 Vdc to operate.
7. Video should now be present on the screen.
BW902-Formatter P1-Light Engine Description Pin # Voltage Pin # Ground 1 0 12 5 VR 2 5 Vdc 11 Power Good 3 3.3 Vdc 10 Ground 4 0 9 2.5VR 5 2.5Vdc 8 2.5VR 6 2.5Vdc 7 Ground 7 0 6 Ground 8 0 5 3.3VR 9 3.3Vdc 4 3.3VR 10 3.3Vdc 3 Ground 11 0 2 12VR 12 12Vdc 1
J4 Connector-Light Engine Pin Description VDC
off VDC
At turn-on VDC run
1 Ballast Lamp Lit L H (5v) L 2 Ground L 0 0 3 5VR 0 5 5 4 Ballast Enable Line 0 5 2.5~3.25
5 5VR 0 5 5
Lamp Cool Down SequenceThere are three timers associated with the cooldown procedure.
1. The first, a standby timer, is engaged when thepower off command is received. The video & audioare muted leaving the power supplies and fans onfor 20 seconds. The screen turns blue and slowlyfades out even though the bulb is still lit. During this20 second interval the user can immediately turnthe set back on.
2. Second after the standby timer expires the lampis turned off and the instrument enters the Cool-Down Mode. When the lamp is turned off, the userwill not be allowed to turn the set on for 30 seconds.During this 30 seconds the run supplies and Lampfan continue to run cooling the lamp. If a Power Oncommand is received before the 30 second cooldown timer has expired, the Power LED will blinkslowly. After this timer expires the unit will startnormally. If there is a power loss after the powerhas been restored this 30 second timer is alsoactivated.
3. The final cooldown timer is a two minute timerthat allows the Lamp fan to continue to run coolingthe lamp after the standby timer expires and thelamp is turned off.
Page 36
Plug set in.
Do you hear therelay K24251
click ?
Check lamp switchand power supplyvoltages: +/-5,6,33VS and the 300V
supply
Does the powerLED light and then
turn off ?
Suspect Powersupply problem
Suspect DM-2CRmodule problem.
Continue to page37.
NO
YES
YES
1A1B
2A2B 2C
Are the power supplyvoltages supplied to the
DM-2CR Module correct?
NO NO
YES
2D
Important: Before replacing any circuit boards, recover the "Failure” codes using Chipper Check.Also, it’s very important when troubleshooting to accurately identify the symptom inorder to quickly isolate which circuit board or item has failed.
Symptom: Cycles, Shutdown, No Start
DLP Service & Troubleshooting
Page 37
Press powerbutton.
Does the power LEDlight up or flash and
the relay click ?
Suspect DM2-CRModule
Check connector P1 on the LIghtEngine for the following run
voltages.Pin 2 5 VDC
Pin 3 3.3 VDC Pin 9 3.3 VDC Pin 12 12 VDC
Are theycorrect ?
Suspect powersupply voltagesand Formatter
PCB.
YES
Do you hear thecolor wheel
spinning at leastmomentarily?
YES
Continue to page38
YES
Contact Tech-Linefor furtherassistance
4B
5A
4A
3A
6B6A 6C
Inspect ALL Cablesfor proper seating.Replace any that
appear to have beenstressed.
NO
NO NO
7B 7C7AHookup Chipper
Check and reviewthe error codes.Attempt a Hard-
reboot.
NO NO
Page 38
Is the lamp being struck(lit)? Refer to note for
measurements
NOTEJ4(4) Connector-Light
Engine Ballast enable line0VDC in Stby, 5VDC at turn-
on, 2.5~ 3.25 in run
If missing, suspectformatter/power
board
NOTEJ4 (1) connector is low
in standby goes H(5VDC) at turn-on thenlow for the run mode
Does the bulbincrease up to full
brightness?
Check J4(1) connectorfor the correct voltage.
Refer to note.
Physically inspect theconnector on the lamp
power supply.
Check on J4(3,5) for 5VR atturn on.
Suspect Lampballast power
supply
Unplug J4 connectorand recheck pin 4 on
the light engine
Suspect Lampballast power
supply
YES
NO
NO
YES
NO
YES
YES
NO
YES
NO
NOPhysically inspect
the Lamp andconnector
Contact Tech-Linefor furtherassistance
NO
8B
9A
8A
9B 9C
9D
10A10B 10C
11A 11B
Contact Tech-Line
Suspect DM-2CRNO
Page 39
Symptom: Stuck pixels (Black and/or White)
1. The stuck pixel specification is 0 for stuck on (bright) and 2 for stuck off (dark)anywhere on screen.
2. Access the test patterns in the service menu 80. Using either the info. buttonor the skip button on the remote control select the “White Screen” for darkpixels or the “Dark Screen” for bright pixels.
Symptom: Pixelization, Digital Freezing &/or Digital Noise/Artifacts1. Check for a weak ATSC terrestrial (check strength of terrestrial signal) signal cancause pixelization or freezing. An external antenna can dramatically improve ATSCreception. If signal is OK go to next step.
2. Check operation of PIP, NTSC input, ATSC input, OSD and On Screen Guide.
If any of these modes function OK, suspect DM2CR.
3. Go to service menu #80 and toggle to the checkerboard pattern. If the unit displaysthe symptom suspect the Formatter CBA. If the display is OK, suspect DM2CR.
4. Apply 2H YPrPb to an external input. Applying a 2H signal to an external input
bypasses around the DM2CR and is input directly into the Formatter CBA. If problemremains suspect the Formatter CBA. If the problem is not present on the externalinput, suspect the DM2CR.
NRETTAP ECRUOS
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Page 40
Symptom: Instrument starts up normally with video then shutsdown (Instrument runs 20-30secs)
Note: When unit shuts down, Power LED blinks three (3) times. Set restartsautomatically after 20-30 seconds. Unit continues to cycle
1. Suspect failure of lamp cooling fan or DLP device cooling fan.
Symptom: Poor Picture Quality (spots, discoloration, color impurities, etc.)
1. Whenever dealing with picture quality issues, always check the quality of signalsource before servicing unit.
2. Supply a 2H signal into the component inputs and see if the quality of the pictureincreases. If so, suspect a problem in the formatter or DM-2CR.
3. Access the test patterns in the service menu #80. The formatter CBA generatesall patterns except the checkerboard. The light engine generates the checkerboardpattern.
Symptom: Rotated or Offset Picture1. Perform mechanical rotation adjustment of light engine and/or use service menu76 to adjust horizontal and vertical centering.
Symptom: Dead Set, Power LED stays ON when AC is applied(relay will click when the AC is applied)
1. The DM2CR is powered by the standby supply and when AC is first applied theDM2CR goes through a boot up sequence. If the Power LED remains on when ACis applied (should go off in 20-25sec), the DM2CR is not booting up properly. Referto page 17-18 for the startup sequence.
Page 41
NOTES
TDLPTRNGMAN1 Printed in USA
Chassis Part Symbol Defective Circuit Symptom solution
ATC311B LW907 Power SupplyReplaced the lamp and the ballast but still no lamp, no dc at pin 5 or 6 of BW902. Found bad connection at LW907. Resolder LW907
ATC311B K24251 Power SupplyThe lamp does not start, the color wheel starts and stops. Found no dc at J24252, relay K24251 open coil.
Replace relay K24251
ATC311 Q24606 Power Supply No audio, no Color in 1H mode. HD worked ok, found one leg of Q24606 broken (12VDC). . replace Q24606
ATC311B J24702 Power SupplyUnit going into shutdown. Three blink error code. Neither fan would run and light would not light. J24702 was found loose going to the formatter board J24702
ATC311B SW13101 Power Supply
The picture would go off after a short period of time. The tuner and audio was still working. Found the AC interlock causing the problem, the little plastic arm appeared to cause. You would hear the color wheel start up and then stop.
Secure interlock switch SW13101.
Chassis Part Symbol Defective Circuit Symptom solution
ATC311B Ligh Engine VideoColor spot on the screen, looking at the lens though the lamp found a piece of plastic. removed the plastic and now it's fine remove plastic
DLP DLP
Page 3-2Page 3-1
Operating ConditionsUnless otherwise noted, the following conditions must beobserved when aligning the TV:1. Chassis must be operated from a 120 VAC isolation trans-
former with line voltage set to 120 VAC.
2. All voltages and waveforms referenced are with respectto Ground
3. A 10X probe must be used for oscilloscope and frequencymeasurements.
TV Service ScreenThe service screen is provided to facilitate instrument align-ment and service adjustments. The service screen is accessedby pressing a two-button combination on the front controlpanel of the instrument.
Using the Front Panel Controls to enter Service Screen
1. Turn on the TV and select the channel that will be usedfor the alignment procedure.
2. With the instrument “ON” press and hold the “Menu”button and then the “CHq” button.
3. The TV set should immediately display the service screenMenu as shown.
Service Screen
Entering the Service Alingment Mode
1. Bring up the Service Screen.
2. Once in the service screen use “CHq” button on the key-board or the down arrow on the remote control to high-light item “2 Service Alignment”.
ALIGNMENT PROCEDURES ALIGNMENT PROCEDURES
Service Alignment Selection
3. Press “Menu” on the keyboard or “OK” on the remotecontrol to activate the Alignment Screen.
Service Alignment Screen
4. Once the Alingment Screen has been activated use the“VOLu” button on the keyboard or remote to adjust thevalue (V:0) to the desired value.
NOTE: When the service mode is accessed, the parameterwill be “0”. Parameter “0” is used to input the security code.The security code is necessary to protect the factory align-ments from inadvertent modification. Attempting to changethe parameter (P) using “CHq” or “CHp” before the propersecurity code has been entered will cause the instrument toexit the service mode. A valid security code is entered (using“VOLt”or “VOLu”).
Security CodesWhen the Service Alignment Screen is first entered, the pa-rameter (P) will come up set at “0”, which corresponds to thesecurity code function.
1. With the parameter (P) set to “0” adjust the value (V)(using “VOLt”or “VOLu”) to “76” for access to theElectrical Alignments.
2. Once the security code has been set, individual align-ments can be accessed by pressing “CHq” or “CHp”changing the parameter (P) number.
3. Once a parameter (P) has been selected for a particularalignment the “VOLt“and “VOLu” buttons can beused to change the value (V) of the alignments selected.Most Electrical adjustments for the DLP instrument mustbe done using Chipper Check.
Error CodesIf certain failures occur in the chassis, error codes will bestored in the chassis EEprom. These error codes can beaccessed by entering the service menu and setting theVALUE to 50. With the VALUE set to 50, pressing theChannel up button will toggle through the 6 error codes.Error code “0” stores the error code for the first failureexperienced by the instrument. Similarly, error code “1”stores the error code for the second failure. Error code “2”stores the error code for the third failure. Error code “3”displays the error code for the most recent failure experi-enced by the instrument. Information is displayed in thefollowing order: Error #, Date, Time, Type, Count, Code.If an Error of the same TYPE is already logged, then theerror will overwrite the existing error of that type and thecount will be increased. Error codes are summarized inFig. 5.
The presence of “Empty” for the error code indicatesthat no failures have occurred since the time the error codeswere reset. The error codes can (and should) be reset to“0” after servicing. Press the clear button to clear the errorcode that is currently being displayed.
1. Enter the Service Menu.
2. Press Volume Up Until V is 50.
3. Press Channel Up to View The First Error.
4. Press Channel Up/Down to View the Next/Previous Er-ror.
5. Press Clear to Clear the Error Code that is Currently Be-ing Displayed.
6. Press Power Off to Return to the P:0 V:50 Display.
7. Press Power Off Again to Return to Normal TV View-ing.
To use the Error Code charts, first look up the “Type” dis-played in the error code (Fig. 4). Then find the Type number(Hex) in the first error code chart (Fig. 5). The descriptioncolumn indicates the general area of the problem and the Detailcolumn gives additional information for some Error Codes.
If the Error Code “Type” is 21 or 22, additional informa-tion is available as shown in Fig. 6. Refer to the last string ofhex characters referred to as Data or Code in Fig. 4. The firsttwo characters hex value of the string refer to the “Chip” in-formation in Fig. 4. The second two characters hex value inthe string refer to the “Bus” information in Fig. 4. The thirdtwo characters hex value in the string refer to the “Details”information in Fig. 4.
If the Error Code “Type” is 41, additional information isavailable as shown in Fig. 5. Refer to the last string of hexcharacters referred to as Data or Code in Fig. 2. Thefirsttwocharacters hex value refer to the “Watchdog” infor-mation in Fig. 5.
0: 0.0.0 0:0:0 Type=21 Count=4 Code = 4002010000000000
Error # Date Time Type Count Code
Fig. 4 Error Code Screen
DLP DLP
21,22,23 Bus 0 5 Bus1 Run 1 Bus2 Run 2 Bus
21,22 Details 1 chip did not acknowledge when was expected to2 some hardware error detected, maybe one of the lines is grounded3 some software error, e.g. not enough memory, or could not acquire the mutex to the driver
Chip Bus Module Comment1E 5 Bus DM2CR Broadcom VSB/QAM34 Run 2 Driver DDP1010 Light Engine Controller40 Run 2 Deflection Deflection DAC42 Run 2 Driver PCF8574 I/O Expander50 5 Bus DM2 VSB54 5 Bus DM2 GPIP54 Run 2 Formatter Lunar IC58 Run 2 Formatter Ortho FPGA5A Run 2 Driver AD524170 Run 2 Formatter DVI Transmitter74 Run 2 Driver DVI Receiver78 Run 1 Audio Audio Bus Expander80 5 Bus DM2 Micronas Audio Processor84 Run 1 A/V Input CXA2151 2H Switch88 Run 2 BEP TA1316 Back End Video Processor88 Run 2 Formatter TA1360 Back End Video Processor8C Run 1 Audio Sound Processor8C Run 2 Deflection TA1317 Deflection Processor8E 5 Bus DM2 Dual IF90 Run 1 A/V Input LA79500 1H A/V Switch92 Run 2 Driver LM75 Digital Temperature Sensor98 Run 2 Formatter AD9883A A/DA0 5 Bus DM2 DM2 Main EEPromA0 Run 2 Deflection Deflection EEProm (lower 256 bytes)A0 Run 2 Formatter Formatter Eeprom (lower 256 bytes)A2 Run 2 Deflection BEP EEProm (upper 256 bytes of Deflection EEProm)A2 Run 2 Formatter Fomatter Eeprom (upper 256 bytes)A4 5 Bus DM2 Tuner EEPromAA Run 2 Service Module MD2 VGA EepromAC Run 2 Driver MD2 Driver Eeprom (lower 256 bytes)AE Run 2 Driver MD2 Driver Eeprom (upper 256 bytes)B0 5 Bus DM2 Link LockB8 5 Bus DM2 Link LockB8 Run 1 A/V Input Frame CombC0 5 Bus DM2 PIP TunerC4 5 Bus DM2 Main Tuner PLLC6 5 Bus DM2 Main Tuner DACDC Run 2 Convergence Convergence Micro
Additional Data Description IIC Errors ("Code")
Additional Data Description (Type 32)This is a count of all system resets since the field code was last cleared. This includes AC dropouts, forced system resets in the code, and resets due to unknown causes.
0 1 2 3 4 5 6 71 Chassis (General) 0 0 0 0 0 0 0 02 Convergence Parity Error 30 0 0 0 0 0 0 0
Loop Fault 31 0 0 0 0 0 0 0Output Inactive 32 0 0 0 0 0 0 0
Bus Fault 33 0 0 0 0 0 0 0Other 34 0 0 0 0 0 0 0I2C 35 0 0 0 0 0 0 0
REF_EE 36 0 0 0 0 0 0 03 Chassis Power Initial Power Fault 10 0 0 0
Other 14 0 0 0Invalid Handle 15 0 0 0
Power Supply Fault 16 0 0 04 Deflection EEProm Corrupt 11 0 0 0 0 0 0 0
POR 12 0 0 0 0 0 0 05 XRP XRP 13 0 0 0 0 0 0 06 Back End Processor BEP POR 0 0 0 0 0 0 0 07 Back End Video Algorithm Error 0 0 0 0 0 0 0 08 DLP Driver Fan Fail 40
Lamp Fail 41No Lamp Strike 42
No Lamp Lit 43Color Wheel 44Lamp Shutoff 45UART Status 46 Data
DDP1010 Reset 4721 IIC Read Chip Bus Details 0 0 0 0 022 IIC Write Chip Bus Details 0 0 0 0 023 IIC Bus Latched ignore Bus 0 0 0 0 0 031 App (General) ? ? ? ? ? ? ? ?32 Reset Count 0 0 0 0 0 041 Watchdog Task Id Task Id Task Id Task Id Task Id Task Id Task Id Task Id51 Guide Process Termination 0 0 0 061 Audio Audio Exception 0 0 0 0 0 0 0 0
Additional DataAdditional Data
Process Exit Code
Reset Count
Type (hex)
Additional DataAdditional Data
Data ("Code") (hex)Description
Fig. 5 Error Code Chart
Fig. 6 Error Code Data
DLP DLP
Additional Data Description (Type 51)The guide process should never terminate so if it does die, the exit code will likely be one of the following exception values:
ValueACCESS_VIOLATION C0000005 FLT_UNDERFLOW C0000093DATATYPE_MISALIGNMENT 80000002 INT_DIVIDE_BY_ZERO C0000094BREAKPOINT 80000003 INT_OVERFLOW C0000095SINGLE_STEP 80000004 PRIV_INSTRUCTION C0000096ARRAY_BOUNDS_EXCEEDED C000008C IN_PAGE_ERROR C0000006FLT_DENORMAL_OPERAND C000008D ILLEGAL_INSTRUCTION C000001DFLT_DIVIDE_BY_ZERO C000008E NONCONTINUABLE_EXCEPTION C0000025FLT_INEXACT_RESULT C000008F STACK_OVERFLOW C00000FDFLT_INVALID_OPERATION C0000090 INVALID_DISPOSITION C0000026FLT_OVERFLOW C0000091 GUARD_PAGE 80000001FLT_STACK_CHECK INVALID_HANDLE C0000008
ValueException Exception
Additional Data Description (Type 41)The first Task Id is the first task to count down to zero. The remaining 7 Ids are any tasks whose counts are at or below 16.Thread Name Hex Value Thread Name Hex Value
UNKNOWN_TASK_ID = 0, 00 SOCKET_IN_TASK_ID, 40APG_TASK_ID, 1 SOCKET_OUT_TASK_ID, 41AV_MAIN_DRV_TASK_ID, 2 SOCKET_ERR_MON_TASK_ID, 42AV_PIP_DRV_TASK_ID, 3 OBSOLETE_03_TASK_ID, 43CA_MAIN_TASK_ID, 4 TUNER0_MONITOR_THREAD_ID, 44CA_PIP_TASK_ID, 5 TUNER1_MONITOR_THREAD_ID, 45CC_TASK_ID, 6 IE_MONITOR_TASK_ID, 46CC_DRAW_TASK_ID, 7 AUDIO_STATUS_TASK_ID, 47CHANACQ_MAIN_TASK_ID, 8 FPA_SCAN_TASK_ID, 48CHANACQ_PIP_TASK_ID, 9 FPIR_TIMEOUT_TASK_ID, 49CHANEPG_MAIN_ENUM_TASK_ID, A FPIR_REM_TASK_ID, 4ACHANEPG_PIP_TASK_ID, B FPIR_KBDKY_TASK_ID, 4BCHANEPG_VBI_TASK_ID, C FPIR_KBDPTR_TASK_ID, 4CCHANEPG_RECORD_TASK_ID D FPIR_KEYUP_TASK_ID, 4DCHANEPG_1394_TASK_ID E FPIR_KEYREPEAT_TASK_ID, 4ECOMPORT_TASK_ID, F KEYMGR_TASK_ID, 4FDC_TASK_ID, 10 SockThreadIn_TASK_ID, 50EEPROM_TASK_ID, 11 SOCKET_CLIENT_TASK_ID, 51EPG_ACQ1_TASK_ID, 12 SOCKET_CLIENT_ERR_TASK_ID, 52EPG_ACQ2_TASK_ID, 13 AV_DRV_VIDEO_STATUS_TASK_ID, 53EPG_ACQ3_TASK_ID, 14 RTC_TASK_ID, 54HWCTRL_TASK_ID, 15 IEE1394_CA_TASK_ID, 55ICP_TASK_ID, 16 FIREWALL_TASK_ID 56IIC_IST_TASK_ID, 17 EEPROM_CALLBACK_TASK_ID, 57LINE_SELECT_ID, 18 EEPROM_WD_TASK_ID, 58OSD1394_CONS_TASK_ID, 19 XDS_TASK_ID, 59OSD1394_PROD_TASK_ID, 1A DLP_TASK_ID, 60POWERFAIL_TASK_ID, 1B MODELLIB_TASK_ID, 61SCHED_TASK_ID, 1C IEEE1394INPUT_TASK_ID, 62SWITCHING_TASK_ID, 1D IEEE1394OUTPUT_TASK_ID 63TIMER_TASK_ID, 1E HDCP_TASK_ID, 64TRANSPORTLILIB_DATA_TASK_ID, 1F 65OBSOLETE_01_TASK_ID, 20 66OBSOLETE_02_TASK_ID, 21 67TPSIMULATOR_TASK_ID, 22 68IEEE1394TASK_ID, 23 69IEEE1394_MON_TASK_ID, 24 70TUNER0_ATSC_NTSC_ID, 25 71TUNER1_NTSC_ID, 26 72UI_TASK_ID, 27 73UPG_TASK_ID, 28 74WATCHDOG_TASK_ID, 29 75TV_PWR_TASK_ID, 2A 76SOCK_CLIENT_TASK_ID, 2B 77VIDEO_CCD_TASK_ID, 2C 78FACTORY_TASK_ID, 2D 79MODE_DETECT_TASK_ID, 2E 80DEFLECTION_TASK_ID, 2F 81BEP_TASK_ID, 30 82CHASSIS_REFRESH_TASK_ID, 31 83PIP_MOVEMENT_TASK_ID, 32 84PIP_VERTICAL_TASK_ID, 33 85DM2_TASK_ID, 34 86IE_MONITOR_THREAD_TASK_ID, 35 87IE_MAINWND_TASK_ID, 36 88AUDIO_APU_TASK_ID, 37 89PER_UPD_TASK_ID, 38 90AV_DRV_AUDIO_STATUS_TASK_ID, 39 91PipXDSDataThread, 3A 92CHAN_ACQ_0_STATE_TASK_ID, 3B 93CHAN_ACQ_1_STATE_TASK_ID, 3C 94HWCTL_LINE_MON_TASK_ID, 3D 95HWCTL_POWER_STATUS_TASK_ID, 3E 96FLASH_TASK_ID, 3F 97
Fig. 7 Error Code DataFig.
DLP DLP
Page 3-4Page 3-3
Vertical and Horizontal Centering
Vertical and Horizontal centering adjustments should onlybe performed after replacing the Light Engine.
Accessing Internal Test Patterns
1. Turn on the TV and select the channel that will be usedfor testing.
2. Select the Service Screen Menu.
3. Select “2 Service Alignment” item.
4. Once the Service Alignment screen is displayed use the“VOLu” on the keyboard or remote to adjust parameterzero (P:0) to a value of eighty (V:80).
5. With parameter zero (P:0) value at eighty (V:80) pressthe “CHp” button on the front keyboard or remotecontrol. This puts the instrument into the vertical andhorizontal centering mode as shown below. This allowsthe technician to select one of several internally gener-ated test patterns. (see table below) These may be usedfor alignment or troubleshooting. The patterns and theirsource are shown in the table below.
Vertical and Horizontal Centering Screen
PATTERN SOURCE Border Crosshatch DM Vertical Lines DM Horizontal Border Lines DM Horizontal Lines DM Crosshatch DM RGB Colorbar DM White Screen DM Black Screen DM BW Checker Board Light Engine
Pattern Table
6. Pressing the “Skip” or “Info” button on a remote control willbring up the test patterns one after the other.
7. Pressing “Go Back” or “Reset” on the remote control will dis-play the first test pattern.
8. Pressing “Menu” on the keyboard or remote control will togglethe display between the test pattern and the tuned channel video.
ALIGNMENT PROCEDURES9. Pressing the “Power” or “On/Off” button on the keyboard or
remote control will cause the instrument to exit the adjustmentmode and return to the (P:0) (V:80) display.
Mechanical Picture Adjustment
1. With the back cover removed loosen the two (2) lowest ofthe three (3) T20 screws holding the light engine in posi-tion.
Light Engine Screw positions
2. Turn on the TV and select the channel that will be usedfor testing.
3. Put the instrument into the Service Alignment mode.
4. Use the “VOLu” on the keyboard or remote to adjustparameter zero (P:0) to a value of eighty (V:80).
5. With parameter zero value at eighty (V:80) press the“CHp” button on the front keyboard or remote controlto put the instrument into the vertical and horizontal cen-tering mode.
6. Use the “Skip” or “Info” button on a remote control to bring upthe crosshatch pattern.
7. While supporting the light engine lamp enclosure backoff the tension on the third upper screw until the light en-gine will rotate with light pressure.
8. While viewing the crosshatch on the front screen rotatethe light engine so that the horizontal lines are parallelwith the cabinet frame.
9. Press the “Menu” button on the front panel or remote con-trol to toggle the display from the crosshatch to channelvideo. Insure that tuned video and croshatch pattern aredisplayed with proper geometry.
10. Tighten the light engine screws and perform the electricalcentering procedure.
11. Pressing the “Power” or “On/Off” button on the keyboard orremote control will cause the instrument to exit the adjustmentmode and return to the (P:0) (V:80) display. Pressing the“Power” or “On/Off” button on the keyboard or remote controla second time will cause the instrument to exit the ServiceMenu.
Electrical Vertical and Horizontal Centering
1. Turn on the TV and select the channel that will be usedfor testing.
2. Select the Service Screen Menu.
3. Select “2 Service Alignment” item.
4. Use the “VOLu” on the keyboard or remote to adjustparameter zero (P:0) to a value of eighty (V:80).
5. With parameter zero value at eighty (V:80) press the“CHp” button on the front keyboard or remote controlto put the instrument into the vertical and horizontal cen-tering mode.
6. Use the “Skip” or “Info” button on a remote control to bring upthe first test pattern, border crosshatch pattern.
7. Use the “CHq” and “CHp” on the front panel or Upand Down arrows on a remote control to adjust the verti-cal positioning of the upper and lower horizontal lines.Adjust the lines so that they are equal distance from theedge of the protective shield frame.
8. Use the “VOLt” and “VOLu” on the front panel orRight and Left arrows on a remote control to adjust thehorizontal positioning of the left and right vertical lines.Adjust the lines so that they are equal distance from theedge of the protective shield frame.
9. Press the “Menu” button on the front panel or remote con-trol to toggle the display from the crosshatch to channelvideo. Insure proper looking video display.
10.Pressing the “Power” or “On/Off” button on the keyboardor remote control will cause the instrument to exit theadjustment mode and return to the (P:0) (V:80) display.Pressing the “Power” or “On/Off” button on the keyboardor remote control a second time will cause the instrumentto exit the Service Menu.
GEMSTAR
To activate the Gemstar service menu, while in TV modepress “Menu”, then item 1 “GUIDE Plus+ Menu. Thenitem 2 “GUIDE Plus+ Setup. When the GUIDE Plus+menu is displayed press “GO BACK” and then the“INFO” button on the remote control. The Gemstar Ser-vice Menu can be cleared with the “CLEAR” button.
10
101 0
1
0
1
1
01
0
10
1
01
0
1
0
10
10
1
01
0
1 0
01
0
1
RED OUTPUT194V
TP50
TOE8
RED BIAS<21-B>
E5003
E5007TOE7
GRN BIAS
0
1
1
0
0
0
0 1 11 0
VERTICAL
1
1
1
0
TP24
TECHNICAL TRAINING0
1
1
0
0
01
1
01
0
1
1
0
0
01
1
01
Cable CARDWhat is it and how to
Troubleshoot TVs that use it?
SAFETY INFORMATION CAUTIONSafety information is contained in the appropriate Service Data. All product safetyrequirements must be complied with prior to returning the instrument to theconsumer. Servicers who defeat safety features or fail to perform safety checks maybe liable for any resulting damages and may expose themselves and others topossible injury.
All integrated circuits, all surface mounted devices, andmany other semiconductors are electrostatically sensitiveand therefore require special handling techniques.
First Edition - First PrintingCopyright 2005 TTE Technology, Inc.Trademark(s)® Registered Marca(s) Registrada(s)RCA and associated marks are trademarks ofTHOMSON S.A. used under license to TTECORPORATION.
Printed in U.S.A.
Prepared byThomson, Inc for TTE Technology, Inc.Technical Training Department, INH905PO Box 1976Indianapolis, Indiana 46206 U.S.A.
FOREWORDThe intent of this manual is to answer some of the more common questionsassociated with the CableCARD™ and it’s use with Digital Cable Ready televisions.Basic information regarding CableCARD™ operation is covered in this manual tohelp service technicians in understanding the overall CableCARD™ system.Information about the cable system is generic in nature and is provided so theservicing technician can make logical decisions when troubleshooting DCR TVsthat are using the CableCARD™.
Note: The Host TV displays found in this manual are for a MotorolaCableCARD™. Different CableCARD™ manufactures or software versions ofthe Motorola CableCARD™ may have alternate information displayed by theHost TV.
Page 4
ContentsFOREWORD ..............................................................3SAFETY INFORMATION CAUTION ..........................3Introduction ..............................................................5Digital Cable Head-end ............................................6CableCARD™............................................................7Copy Control Information (CCI) ............................10OOB Signal ............................................................. 11Authentication Process .........................................12CableCARD™ Tools Menu .....................................14 Reset.......................................................................16CableCARD™ Tools Diagnostic Info ....................17IDCR (2-way Communications) .............................21CableCARD™ Troubleshooting Procedure For Authorized Service Technicians ..................................... 22ERROR Codes ........................................................24CableCARD™ Troubleshooting Troubleshooting in the Home for Installers ......................... 27Authentication Process Flow Chart .....................30Common Problems ................................................31Acronyms ................................................................32
Note: The Host TV displays found in this manual are for a MotorolaCableCARD™. Different CableCARD™ manufactures or software versions ofthe Motorola CableCARD™ may have alternate information displayed by theHost TV.
Page 5
Introduction
Since the introduction of Digital Cable Ready sets and the CableCARD™, the serviceindustry has been left with more questions than answers when it comes totroubleshooting a DCR TV with CableCARD™.
“Cable Card, what is it and how to troubleshoot TVs that use it?” covers basicinformation about the CableCARD, Head-end system, copy protection, Out of BandTuner, CableCARD™ Tools Menu, and ICDR or 2-way communications on digitalcable systems. This manual will help to answer some of the more commonquestions.
What is a CableCARD™? This manual will answer that question and provideinformation about the operation and processes a CableCARD™ must do to functionin a Host TV that is connected to a digital cable system.
What does the CableCARD do? Basic CableCARD™ operation from the time it isfirst inserted till it has been authorized by the Cable Company is covered in thismanual. There is a three (3) step authentication process that the Host TV andCableCARD™ go through in order to function together.
What is the CableCARD™ Tools Menu? The different tools used in diagnosing aCableCARD™ include:
• Network Setup• CableCARD™ Status• CableCARD™ Paring• Conditional Access
What is the future of CableCARD™? Today DCR TVs are currently available.IDCR or Interactive Digital Cable Ready sets are the future. These sets will allowthe end user several options of interactivity using just the remote control for the TV.This requires 2-way communication between the Cable Company and the Host TV.
This manual follows up with helpful information about the CableCARD™. Forexample, the current list of error codes from Cable Labs is listed in an easy tofollow chart. It lists the code number, error condition, the device at fault, andrecommended action(s) to resolve the issue.
Also included is a Troubleshooting section for installers. This will give servicingtechnicians a better understanding of what an installer goes through to isolate downa defective CableCARD™ or cable system problem.
Finally, with all the new terms associated with the DCR and CableCARD™, there isa list of the most common Acronyms used.
Page 6
This section provides general information relating to the Head-end system usedwith digital cable systems and the CableCARD™. It will cover the basic concept ofoperation. This general information should be used to better understand theoperation of the CableCARD™ and Digital cable to make logical decisions whiletroubleshooting.
The purpose of the Digital Cable Head-end is to provide communications andconnectivity between the cable company’s content and the subscriber’s viewingdevice. What takes place between the Head-end and the subscriber’s home istransmission of the signal via cable. The digital transmission from the Head-endcontains content information, OOB (Out Of Band) signal, encryption data, ConditionalAccess (CA) information, and Copy control information (CCI). This data transmissionis present for each digital channel received by the subscriber. All these signals arecontrolled and combined by the Head-end device. Control of the head end is doneby the cable company operator.
Content is the digital information relative to the program content being transmittedvia digital signal. Audio and video programs are converted to digital form andtransmitted via the head-end to the subscriber’s home. Both encrypted and un-encrypted content can be transmitted. Once in the subscriber’s home, the encrypteddigital content needs to be decrypted for viewing. The CableCARD™ provides themethod to decrypt for viewing.
The OOB signal contains CCI, CA, and decryption information used to protect thecontent from piracy. This is a complex decoding system that requires the Host TV,CableCARD™, and Head-end be paired before decryption is allowed. If pairingstops, the CableCARD™ is designed to block all encrypted content from being
CableOperator
ContentServer
Digital CableHead-End
Phone Line
Phone Line
Cable
Cable
HostFigure 1; Cable System
Digital Cable Head-end
Page 7
The CableCARD™ is a Personal Computer-Memory Card International Association(PCMCIA) card used with digital cable systems to control content viewing. Thiscard is used to decode digitally encoded cable signals that the end user hassubscribed to. CableCARD™, when inserted into the Host TV, controls the tuningand decoding of digital channels found on the cable system. It will only allow thosechannels that are paid for by the customer to be viewed. It also provides CopyControl Information (CCI) to the Host TV.
CableCARD™ OperationNOTE: The CableCARD™ provides only Conditional Access capability. NormalDigital Cable Ready (DCR) reception (Un-conditional Access Programming) canoccur without the CableCARD™ being inserted. In other words in the clear channelscan be viewed with out the use of the CableCARD™, provided the digital cable isconnected to the cable input.
In order for the CableCARD™ and the Host TV to function together there are certainprotocols that have to be met. The Host TV first must recognize the CableCARD™as a valid cable card and not just a PCMCIA card. After the CableCARD™ hasbeen recognized by the Host TV, but before the pairing processes has beencompleted, a channel list is downloaded from the cable company. The new channellist replaces any previous lists for the cable input. The cable channel list cannot bechanged while the CableCARD™ is inserted. This process is verified by accessingthe channel search menu and starting a search for Cable input only. The following
viewed. Information about the Host TV and CableCARD™ is provided by thesubscriber to the cable operator. The cable operator then sets up the Head-end topair the CableCARD™ with the Host TV.
CCI has little or nothing to do with viewing content. CCI is used to prevent additionalcopies of the program from being made or recording of the content for viewinglater.
Conditional Access is used to allow access to subscription content. If the subscriberpays for a channel(s), CA lets the CableCARD™ know what channel(s) have beensubscribed to.
This entire information package is transmitted by the Head-end to the subscriber’shome in digital format. Along the way, there are several possible connections,amplifiers, and taps that can affect the digital signal. If the CableCARD™ is notable to decode the digital signal, pairing won’t take place and encrypted contentviewing will be stopped or blocked.
CableCARD™
Page 8
screen will come up indicating the channel list for this system has been received.
Next handshaking between the CableCARD™ and the Host TV takes place. Thishandshaking involves passing security codes and certificate information that boththe Host TV and CableCARD™ validate.
If this process is successful, the CableCARD™ tells the Host TV to display thepairing screen. This screen instructs the consumer to contact the cable serviceprovider to pair the CableCARD™ to the Host TV. This pairing process requiresinformation from the Host TV and CableCARD™ to be given to the cable servicerepresentative. Once this information is provided to the cable company ConditionalAccess System (CA), the head-end will send digital data to the CableCARD™ inthe OOB signal. This data instructs the CableCARD™ as to what service(s) havebeen authorized and what to decode for viewing.
The pairing information, found in the CableCARD™ Pairing menu, is displayedwhen the card is first inserted into the host TV. Pairing information is also broughtup by pressing MENU + 9 + 9 + 9 on the remote control. This is a universal accessfor all CableCARD™ devices. The information displayed consists of:
· Cable Card ID· Host ID· Data Field· Unit Address
If the on-screen prompt does not appear within a minute or two of the CableCARD™being inserted it indicates the CableCARD™ module has not been detected by the
In order to start cable servicefor this device, please contactyour cable provider(xxx) xxx-xxxx
CableCARD(tm):000-298-685-510-0Host:024-000-018-543-1Data:310-974-124-10
UnitAddress:000-02986-85510-224
Figure 3; Paring OSD
Figure 2; Channel Search OSD after Channel List from CableCARD™ Downloaded
A Channel Search is not availabefor the Cable Input
because a list of availablechannels has already been received
from the cable company. You can go to the Parental Controls menu
to set up the channel list for the Cable Input.
Continue
!
Page 9
Host TV. If this is the first time a CableCARD™ has been inserted, or if theCableCARD™ previously worked but recently stopped, the CableCARD™ may bedefective and a new one should be obtained from the cable provider.
If the CableCARD™ is recognized, as indicated by on-screen prompts, there willbe further instructions to continue the installation. If the card is detected butdetermined to be invalid the following screen appears:
The Conditional Access System can revoke the authorization of the CableCARD™forcing it to reinitialize (Pair) with the Host TV. Until they are reinitialized, allconditional access (CA) programming will be blocked except for the unencryptedchannels. When this happens the Host TV will display the pairing screen as if theCableCARD™ was inserted for the first time.
Please call your cable operator andreport an invalid CableCARD.
Continue
!
Figure 4; Invalid Card OSD
Page 10
Copy Control Information (CCI)
Copy Control Information (CCI) can be added to each program supplied by theCable Service Provider. CCI has different levels that dictate if a program can berecorded and how many times it may be recorded. There are four levels of CCI.The following table shows the different levels.
CCI values:(0) Copy Freely(1) Copy No More(2) Copy Once(3) Copy Never
The level of CCI for each program is determined by program provider or the CableService Provider. This level is then passed from the Head-end to the cable card inthe OOB data channel. The cable card decodes the CCI and passes it to the Hostunit in the clear. The host unit is required to control output of the program based onthe CCI value. For example; if the CCI level is 0 (copy freely) the program isallowed to be viewed and available on any of the Host outputs for recording. If thelevel is 3 (copy never), the Host can only display the program and is required toblock all recording of the program.
CCI can present a problem when using a Digital Video Recording device. The DVRmay not record or other functions of the DVR such as pause, review, etc. may notwork. The CCI levels for DVR operation are level 00 and 10. All other levels willprevent DVR operation. However; all levels of CCI will allow a "display only" HostTV to view the program.
NOTE: Copy never programs can be recorded using a Personal Video Recorder(PVR) and played back within 90 minutes. This is for PVR pause and other features,but not for long term storage. After the 90 minutes are up, the program will still beon the PVR. When accessed to play the program, the PVR will display an errormessage.
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OOB SignalQPSK (Quadrature Phase Shift Keying) is a digital frequency modulation techniqueused for sending data over coaxial cable networks. Since it’s both easy to implementand resistant to noise, QPSK is used by DCR systems for sending data to and fromthe headend.
The QPSK receiver circuit in the Host TV tunes and demodulates the QPSK ForwardData Channel (FDC). The serial data in the FDC is used primarily to send conditionalaccess entitlement messages from the cable provider to the CableCARD™ eitherallowing or blocking program material that is encrypted. Program material that isnot encrypted will pass through the CableCARD™ regardless of the entitlement.
Tuning of the QPSK receiver circuit is under control of the CableCARD™. Thisreceiver circuit is generally known as the OOB or Out of Band Tuner. The OOBdata is seperate from the normal program material coming in on the standard set offrequencies.The normal program content is managed by the INB or In Band Tuner.The OOB tuner in the Host TV is separate from the normal QAM, ATSC and NTSCtuners. The tuning range of the OOB tuner is between 70 and 130 MHz, fallingwithin the cable frequency allocation from 54 to 1000 MHz.
A CableCARD™ must be inserted for the OOB to be tuned. Whether theCableCARD™ is paired to the Host TV or not, the OOB is tuned. CableCARD™pairing is determined by comparing incoming information from the cable providervia the OOB tuner data to the information contained in the CableCARD™.
The OOB circuitry is inactive if a CableCARD™ is not inserted. When aCableCARD™ is inserted, the Host TV initiates a handshake with the CableCARD™.If successful, the Host TV then activates the OOB tuner and decoder circuits asinstructed by the CableCARD™. The OOB circuitry is only connected to theCableCARD™ interface. There is no direct control of OOB data by the Host TV.
OOB Forward Data Channel vs OOB Reverse Channel DataThe out-of-band forward data channels are primarily for control and accessmessages, application code download and electronic program guide content. Ifcapacity is available, other data services may be transmitted through this channelas well. Out-of-band communications are always available to the Host TV, nomatter which analog or digital channels are tuned. For on-demand applications,the out-of-band forward channels may be used to support control and signalingflows between the Host TV and the Cable Company headend. The out-of-bandreverse data channels carry all data from the Host TV to the headend equipmentfor two-way communication. Two way communication is detailed in the sectiontitled "IDCR (2-Way Communication)".
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Authentication ProcessTo provide authentication, the CableCARD™ verifies security data stored in theHost TV. This authentication ensures that the CableCARD™ will pair with certifiedHost TV devices only.
The authentication process is comprised of three steps that are used to verify theHost TV certificate.
1. The CableCARD™ checks to see that the digital signature of the certificatesupplied by the Host TV represents an accurate signature matching thecertificate authority. If the certificate is NOT authentic, encrypted servicesare blocked to the Host TV device. Once the CableCARD™ successfullyauthenticates the Host TV certificate, the CableCARD™ is authorized tobegin descrambling certain content for the Host TV.
2. The CableCARD™ ID, Unit Address, Data Field and the Host TV’s uniqueidentification numbers are provided by the customer to the Cable Companyto update the headend. The Host TV certificate is then verified againstcertificate revocation lists (CRL) stored at the cable headend. Once theheadend has verified the Host TV certificate has not been placed on theCRL, the headend will send a Host TV ID validation message back to theCableCARD™.
3. While the CableCARD™ is waiting for the Host TV ID Validation messagefrom the headend, the CableCARD™ requests the a Duffie-Hellman keyfrom the Host TV. This authentication key is compared to one derived in theCableCARD™. Only after all three steps have been completed successfullyis the CableCARD™ able to send all authorized services, including thosewith copy protection restrictions, to the Host TV device.
This Authentication process is checked on a regular basis for each channel selectedor when the Host TV and CableCARD™ are reset.
Page 13
Figure 5; Authentication (Paring) Process
Cable Card™Inserted first time
START
OSD indicatingCable CARD™was detected is
displayed
Down loading ofChannel list
occurs
Paring InformationScreen is
displayed forcustomer.
Customer must contactCable Operator andprovide displayed
information
Paring betweenCable CARD™
and HOST occurs
Hostcommunicates
with CableCARD™
Communicationcomplete. Waitingfor information from
Cable Co.
Channel list loaded intoHOST memory and
channel searchblocked for cable
Host and CableCARD™ wait forcable co to send
paring information
Cable operatorsets up
customer intheir system.
Data transferfrom head endto host / cablecard occurs
Host and Cable CARD™are paired and decryptionof CA channels occurs.
CA channelsavailable for
viewing
Channel Viewingby customer
Page 14
CableCARD™ Tools MenuSelections under CableCARD Tools Menu provide additional information about thestatus of the CableCARD™. The following is an example of the CableCARD™Tools menu. Each menu option has information that is useful in pairing up ortroubleshooting the CableCARD™.
Note: The following information is based on a Motorola CableCARD™. OtherCableCARD™ manufactures may have alternate information displayed by the HostTV.
Network SetupNetwork setup is used to manually retune the OOB channel frequency. By selecting“Hunt”, the CableCARD™ will start the process of searching for the OOB channel.When Successful, Status will indicate TUNED_STATE and OOB Msgs: will have avalue other then zero. The LKC indicates the frequency of the OOB signal. In thiscase it is 75.250MHz.
SUCCESS!Network Provider found.Frequency: 75.250,EMM:
Exit
Network Setup
LKC: 75.250 EEM:Status: TUNED_STATEOOB Msgs:3356
Hunt
Figure 6; CableCARD™ Tools Menu
Figure 7; Network Setup OSD
Page 15
CableCARD™ StatusThe CableCARD™ Status menu displays information about the Manufacture,Download Status, Entitlement Management, and OOB Channel.
o Manufacture: Is the manufacture code and or name of the CableCARD™.This display may just show the manufacture code and not the manufacturesname.
o Version: Is the software version of the CableCARD™.
o Unit Address is used to pair the card with the host set. This information isalso found in other sections of the tools menu.
o Out of band channel indicates the OOB frequency. This is the last knowngood carrier only. Tuned or not tuned is a static state that represents thecondition of the network when Network Setup was last run. To get currentstate, run network setup.
CableCARD™ PairingThe pairing option brings up the same display that MENU + 9 + 9 + 9 brings up.This is the same display that comes up when the CableCARD™ is inserted but hasnot been paired.
CableCARD(tm) Status
Manufacture:0x00 (Motorla)Version:03.34Unit Address:0011CD9446000-02986-85510-224
Download StatusSegments left to download:State:Wait To Start
Entitlement Management MessagesEEM Provider ID:1
Out of Band ChannelLast Known Carrier:75.250 Tuned
In order to start cable servicefor this device, please contactyour cable provider(xxx) xxx-xxxx
CableCARD(tm):000-298-685-510-0Host:024-000-018-543-1Data:310-974-124-10
UnitAddress:000-02986-85510-224
Figure 8; CableCARD™ Status OSD
Figure 9; CableCARD™ Paring OSD
Page 16
Conditional AccessConditional access option provides some of the same information that the othermenu options provide but adds information about the currently tuned channel. Thisadditional information deals with the Copy Control Information (CCI) and PacketIdentification Number (PID).
o ECM PID or Entitlement Control Message Packet Identification number: Usedfor verification that the correct ECM is sent for each program.
o Component PID: Used for error handling
o Host Validation: Information used to verify that paring has taken place. Somesystems do not automatically store this value. This requires it to be given tothe cable operator.
o The Copy Protection Key indicates wheather or not the program is usingCCI. The CCI value is the level of copy protection being used for the currentlytuned program.
Conditional Access
Unit Address: 0011CD9446000-02986-85510-224State: SubscribedECM PID: 0x0000Component PIDs:0x00410x0040x00000x0000 0x0000 0x0000Host Validation: Valid 09Copy Protection Key: DisabledCCI: 00
Figure 10; CableCARD™ Conditional Access OSD
ResetThe CableCARD™ Reset option allows the consumer to perform a manual resetwithout removing the CableCARD™. Reset is a complete reset of the CableCARD™.The channel list is removed form the Host TV and Host TV validation process isreset. If after Reset the pairing screen comes up, the cable company may haverevoked the CableCARD™. This will require the CableCARD™ to be re-pairedwith the Host TV.
Reset should be used anytime there is a problem with receiving channels, channelfreeze, wrong channel list stored, or some channels missing. Some Host TV’s willreset the CableCARD™ automatically when the CableCARD™ is detected as beinglocked up.
Page 17
Figure 11; CableCARD™ RESET OSD
Figure 12-1; CableCARD™ Diagnostic Info
CableCARD Tools Diagnostic InfoThis following is for various RCA / Scenium products only. Other manufacture'smenus will vary.
Page 18
Figure 12-2; CableCARD™ Diagnostic Info
Diagnostic Info screen displays certain information about the CableCARD™ andHost TV. This information provides the cable company / installer or servicingtechnician with details about:
• Out Of Band (QPSK / FCD)• Host TV and CableCARD™ Certificates• Virtual Channel• PSIP Channel• Number of Audios• Physical Channel• Program Number• Signal Strength• Video PID• Audio PID• PCR PID• CCI Byte• Broadcast Flag
Each title has a state or data value assigned during normal operation. Reviewingthis information will assist in troubleshooting a CableCARD™ problem.
Out Of Band (QPSK / FCD)The states for Out Of Band (QPSK / FCD) are Locked and Unlocked. When theCableCARD™ is receiving and decoding OOD data, the Out Of Band (QPSK /FCD) will show “LOCKED”. If the CableCARD™ can’t decode the OOB data, the
Page 19
Out Of Band (QPSK / FCD) will show “Unlocked”. Unlocked indicates a problemwith the CableCARD™ or cable system.
Host TV and CableCARD™ CertificatesCertificates for TV Digital Cable and CableCARD™ are verified on a regular basis.Any time the channel is changed or the CableCARD™ is inserted the certificatesare checked. If the certificates are valid, the display will read “Verified”. If thecertificates aren’t read, the display will read “Insert CableCARD”. The other optionis Failure. Failure under TV Digital Cable indicates a problem with the Host TV andFailure under CableCARD™ indicates a problem with the CableCARD™.
Virtual ChannelVirtual Channel is the displayed channel number. Channel mapping by the cablecompany can assign any number to a given frequency. This assignment becomesthe virtual channel number for a given frequency. In the example, 93-2 is thenumber that will be displayed in the channel banner. The (0x005d-0x0002) is theHEX equivalent of 93-2.
PSIP ChannelPSIP channel is the Program and System Information Protocol channel. This willchange depending on what input is selected. Other possibilities are:
• Analog Channel• PSIP Channel (associated with HD digital channels)• PAT / PMT (CableCARD™ or cable company)• Input 1• Input 2• Input 3 etc.
Number of AudiosIf there are more then one audio channel (SAP) then the number will indicate howmany there are.
Physical ChannelThis is the actual channel number for the currently tuned channel. This numbercan be different from the virtual channel number because of channel mapping.(See Virtual Channel)
Program NumberProgram number is used to display what sub channel of the physical channel theset is tuned to. In this example, 2 is the program number.
Signal StrengthSignal strength is a number indication of how strong the tuned channel signal is.The higher the signal strength number, the stronger the signal is and vise versa.Signal Strength is an indication of signal to noise ratio only, not an actualmeasurement of the signal energy.
Page 20
Figure 12-3; CableCARD™ Diagnostic Info
Video and Audio PIDPacket Identification number identifies the data sub stream for Audio and Video.
PCR PIDPCR or Program Clock Reference Packet Identification number is the data substream for the encoder / decoder synchronization.
CCI ByteCopy Control Information Byte displays the level of copy protection the currentlytuned station has. See the section on page 10 Copy Control Information (CCI) forthe different values.
Broadcast FlagBroadcast Flag is a sequence of digital bits that indicates if a program is protectedfrom unauthorized redistribution. The state for this is on or off. Broadcast Flagallows content to be copied but blocks the transmission of content over anunauthorized system. This is different from the CCI Byte that protects content frombeing copied.
If set is tuned to an input, only the Out of Band, TV and CableCARD™ Certificateswill be displayed, all other information will show as "not applicable".
Page 21
CableOperator
ContentServer
Digital CableHead-End Cable
Cable
Host
Figure 13; IDCR System
IDCR (2-way Communications)
The future of the Host TV is to provide two way communications between the CableCompany and the Host TV through the CableCARD™. The two way communicationswill allow the subscriber to access pay per view channels with out contacting thecable operator to set it up. With two way communications, the Host TV will transmitdata information back to the Head-end in much the same way the Head-end sendsdata to the Host. This requires that the Host TV be capable of transmitting digitaldata via the cable connection.
Transmission of data is not only used for pay per view, it is used to maintain the CAand CCI information. It also allows the cable company to monitor what the subscriberis viewing to better serve the subscriber.
Currently only set top boxes (STB) have two way communication using aCableCARD™ device. This setup provides the subscriber with many more featuresover the Host / CableCARD™ setup. These extra features include: Interactive TV,Pay-Per-View, Video on Demand, and the ability to change subscription optionswithout contacting the Cable Company.
To tell if a set is capable of two way communication, look for the logo:
IDCR or Interactive Digital Cable Ready has the ability to provide two waycommunication on a digital cable system. The arrows in the logo indicate two waysignal transfer. All devices in this system must be able to transmit in both directions.This includes the Head-end, amplifiers, splitters, DVR, VCR, and any other deviceplaced in the path of the cable signal.
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CableCARD™ Troubleshooting ProcedureFor Authorized Service Technicians
1. Remove CableCARD™ and reset Host TV by unplugging Host TV from ACpower for one (1) minute.
2. Reapply AC power and turn Host TV on. Initiate a complete channel searchfor the cable input. This will clear any previous channel list stored by theCableCARD™.
3. Access a valid cable channel. Is station audio and video clear? If “Yes”, goto step # 4. If “No”, continue troubleshooting Host TV and the Cable Systemto correct. Once you have resolved any cable signal noise problems, continueto step #4.
4. Insert the CableCARD™ and wait for the on-screen display (OSD) prompts(see Authentication Process on page 12). Did the CableCARD™ PairingOSD appear? If “Yes”, contact the cable company and provide them withinformation to begin the pairing process. If “No”, go to step # 5.
5. Access the CableCARD™ Tools Menu and RESET the CableCARD™. IfRESET option is not available, remove the CableCARD™ and reinsert it.Did the CableCARD™ Pairing OSD appear? If “Yes”, go to step #8. If “No”,go to step # 6
6. Confirm that the OOB signal has been found and is locked. No CableCard™processes are allowed to take place without a locked OOB signal. Dependingon the available diagnostic menus you may use either option a. or b. todetermine the presence of a valid OOB signal
a. In the available CableCard™ tools or diagnostic menus search forindications that the “Out of Band” or “OOB” is “tuned”, “LCK” or“Locked”.
i. If the OOB signal is not locked, go to step #7ii.If the OOB signal is locked, go to step #8
If there are no OOB indicators in the available diagnostic menus and tool, useoption b. to verify the presence of a valid OOB signal
b. Enter the channel search options and attempt to initiate a search forcable channels.
i. If a cable channel search is allowed, this would indicate theOOB signal is invalid or missing. Go to step #7.
Page 23
ii.If a cable channel search is not allowed because a cablecompany channel list has already downloaded, this is anindication a valid OOB signal has been acquired. Go to step#8
7. Suspect CableCARD™ or cable system failure. Common cable systemcomponents known to cause the loss of the OOB signal are:
· Splitters· Amplifiers· Defective cables (Inside and Outside)· Other devices connected before the Host TV (VCR, DVD, DVR, etc.)· Bad Ground on the Grounding Block
If possible, connect the Host TV directly to the main cable before it enters theresidence. This eliminates many of the system components listed in step #7.Once the cable system has been repaired, go back to step #6 and confirm OOBhas been found and is locked.
After OOB has been confirmed, go to step #8.
8. Access the CableCARD™ Pairing screen from the CableCARD™ ToolsMenu. Contact the cable company and provide them with information requiredto authorize the CableCARD™.
9. Once the CableCARD™ has been authorized, attempt to access anyencrypted channel. If encrypted channels can be viewed, go to step #10. Ifnot, contact the cable company and report the issue for resolution.
Note: In many cases only the premium or pay per view channels areencrypted. If unable to view encrypted channels, suspect the CableCARD™or an authorization failure.
10.If encrypted channels can be viewed, the system is working.
Page 24
ERROR Codes
A technical problem is preventing youfrom receiving all cable services at
this time.
Please call your cable operator andreport error code 161-xx to have this
problem resolved.
CableCard™ error codes are displayed on the HostTV in a format similar to the one on the right. The codeit’s self is 161-XX where XX is the code number. Thefollowing tables list the codes currently being used.
Error Condition Device Action Comments1 Card READY Signal does not go active Card Reset Host / Cable CARD™
2 Host reads incorrect CIS values Card Reset Host / Cable CARD™ Report error if problem continues
3 Host writes incorrect value to Card configuration register Host Troubleshoot Host TV
4 Host sets command channel bit but Card fails to set bit within 5-seconds Card Reset Host / Cable CARD™
5 Host sets extended channel bit but Card fails to set bit within 5-seconds Card Reset Host / Cable CARD™
6 Invalid Buffer negotiation -Card- Card Reset Host / Cable CARD™ Report error if problem continues
7 Invalid Buffer negotiation -Host- Host Troubleshoot Host TV
8 Invalid Buffer negotiation -Card- Card Reset Host / Cable CARD™ Report error if problem continues
9 Invalid Buffer negotiation -Host- Host Troubleshoot Host TV
10 Card doesn't respond to Host open transport within 5-seconds Card Reset Host / Cable Card™
11Host doesn't respond to Card request to open resource manager within 5-seconds
Host Troubleshoot Host TV
12Host responds to open resource manager session response -resource manager non-existent
Host Troubleshoot Host TV
13Host response to open resource manager session response -resource manager unavailable
Host Troubleshoot Host TV
14Host response to open resource manager session response -Incorrect version of resource manager
Host Troubleshoot Host TV
15Host resopnse to open resorce manager session response -resorce manager bussy
Host Troubleshoot Host TV
16Host resopnse to open resorce manager session response -invalid status byte
Host Troubleshoot Host TV
17 Card fails to respond to profile_INQ within 5-seconds Card Reset Host / Cable CARD™
18 Host reource response -no application information resource Host Troubleshoot Host TV
19 Host resource response -no host control resource Host Troubleshoot Host TV
20 Host resource response -no system time resource Host Troubleshoot Host TV
21 Host resource response -no MMI resource Host Troubleshoot Host TV
161-
Page 25
Error Condition Device Action Comments
22 Host resource response -no low speed communications Host Troubleshoot Host TV
If OOB reverse path not available, then some application will be unavailable.
23 Host resource response no homing resource Host Troubleshoot Host TV
Card may have some operation problems (i.e. downloading software)
24 Host resource response -no copy protection resource Host Troubleshoot Host TV Only clear channels may be
viewed.
25 Host resource response -unknown resource identifier Host Troubleshoot Host TV Not a failure condition
26 Host fails to respond to open session request within 5-seconds Host Troubleshoot Host TV
27Host response to open application info resource session -application info non-existent
Host Troubleshoot Host TV
28Host response to open application info resource session -application info unabailabe
Host Troubleshoot Host TV
29 Host response to open application info -incorrect version of application info Host Troubleshoot Host TV
30 Host response to pen application info -application info bussy Host Troubleshoot Host TV
31 Host response to open application info -invalid status byte Host Troubleshoot Host TV
32Card request to open conditional access session to the Host times out after 5-seconds
Host Troubleshoot Host TV
33 Card response to conditional access -conditional access non-existent Host Troubleshoot Host TV
34 Card response to conditional access -conditional access unavailable Host Troubleshoot Host TV
35 Card response to conditional access - incorrect version of conditional access Host Troubleshoot Host TV
36 Card response to conditional access -conditional access bussy Host Troubleshoot Host TV
37 Card response to conditional access -invalid status byte Host Troubleshoot Host TV
38 Card fails to respond to CA_INFO_INQ within 5-seconds Card Reset Host / Cable CARD™
Report error if problem continues
39Card request to open copy protection session to the Host times out after 5-seconds
Host Troubleshoot Host TV Only clear channels may be viewed.
40Host response to open copy protection resource session -copy protection non-existent
Host Troubleshoot Host TV Only clear channels may be viewed.
41Host response to open copy protection resource session -copy protection unavailable
Host Troubleshoot Host TV Only clear channels may be viewed.
42 Host response to open copy protection resource session -copy protection busy Host Troubleshoot Host TV Only clear channels may be
viewed.
ERROR Codes
161-
Page 26
Error Condition Device Action Comments
43 Host response to open copy protection resource session -invalid status byte Host Troubleshoot Host TV Only clear channels may be
viewed.
44 Host doesn't support Cable CARD™ device's copy protection system Both Host / Card Incompatibility Only clear channels may be
viewed.
45 Host and Cable CARD™ wont Pair Both Host / Card Incompatibility Only clear channels may be viewed.
46 Host response to CP-SYNC -Host busy Host Reset Host / Cable CARD™ Troubleshoot Host TV
A copy protected channel will stop being descrambled
47 Host response to CP-SYNC -no CP support Host Troubleshoot Host TV a copy protected channel
will stop being descrambled
48 Host response to CP_SYNC -invalid status Host Troubleshoot Host TV A copy protected channel
will stop being descrambled
49 Host fails to respond to CP_OPEN_REQ Host Troubleshoot Host TV A copy protected channel
will stop being descrambled
50 Invalid Host certificate Host Troubleshoot Host TV Only clear channels may be viewed.
51Write error (WE) occurs after completion of any transfer from Host to Cable CARD™
Both Reset Host / Cable Card™User may see frozen picture on scrambled channels
52Read error (RE) occurs after completion of any transfer from Card to Host
Both Reset Host / Cable Card™User may see frozen picture on scrambled channels
53 Card fails to respond to any request within 5-seconds Card Reset Host / Cable CARD™
Report error if problem continues
User may see frozen picture on scrambled channels
54 Invalid session APDU from Host Host None Not a failure condition55 Invalid session APDU from Card Card None Not a failure condition56 Invalid SPDU tag from Host Host None Not a failure condition57 Invalid SPDU tag from Card Card None Not a failure condition58 Invalid APDU tag from Host Host None Not a failure condition59 Invalid APDU tag from Card Card None Not a failure condition
60 Transport ID from Host that has not been created and confirmed by Card Host None Not a failure condition
61 Transport ID from Card that has not bee created by Host Card None Not a failure condition
62 Session ID from Host that has not been created and confirmed by card Host None Not a failure condition
63 Session ID from Cable CARD™ device that has not been created by Host Host None Not a failure condition
64 Imcompatible Cable CARD™ device inserted Host Replace Cable CARD™ Used when an S-Card is
inserted into an M-Host
65 Card resource limit reached Card Reset Host / Cable CARD™ Report error if problem continues
ERROR Codes
161-
Page 27
CableCARDTM TroubleshootingTroubleshooting in the Home for Cable Installers
1. It is recommended that a couple of extra CableCARD™s be used fortroubleshooting. This will help eliminate the CableCARD™ as a possibleproblem.
2. Before installing the new CableCARD™, the installer should check that theDigital Cable Ready (DCR) TV, also referred to as a Host TV, is functionalwithout a CableCARD™.
a. Verify Host TV Operation: This is confirmed by connecting the RFcable to the correct input of the Host TV (there may be connections fora terrestrial antenna) and verifying good picture quality. The Host TVwill display all non-encrypted analog and digital content. (The Host TVmust not receive the RF signal via a Set Top Box or accessory RFmodulator.)
This step only eliminates basic TV circuitry as a potential problem.NOTE: This does not eliminate the Host TV it only verifies basicoperation of the HTV. A channel search on the Cable Input may berequired to add any channels which were re-mapped with theCableCARD™.
b. Install the CableCARD™ and check that it is inserted properly. Wheninserting cable card, push carefully but firmly until you feel the cardclick into place. When correctly inserted the card may or may not beflush with the back of the slot, this varies according to manufacturer.
Once the host has established communication with the card, onscreeninformation will be displayed indicating the card was inserted anddetected.
c. Verify RF from Cable System: A cable set top box can be used toconfirm reception of encrypted digital services. This will ONLYindicate that the cable signal is correct for the Set Top Box. The datafor the Cable CARD™ could still be a problem.
3. If the first Cable CARD™ installed does not result in a User Interface screen(also referred to as Man Machine Interface screen) within 2 - 5 minutes, tryunplugging the AC cord of the Host TV and reconnecting it (this should resetthe Host TV and CableCARD™), then try to access the User Interface screenagain. This screen is accessed by the industry agreed-upon remotecombination of MENU+9+9+9. If this is still unsuccessful, try anotherCableCARD™.
Page 28
a. To eliminate the possibility of a damaged CableCARD™ or Host TV,the installer should look closely at the CableCARD™ to ensure thatnone of the pinholes are blocked or clogged.
b. Check the Host TV Interface (CableCARD™ slot): Using a flashlight,look in the CableCARD™ slot on the Host TV to ensure that there areno bent pins.
c. If the CableCARD™ is inserted correctly but the CableCARD menu isnot displayed or is grayed out, try the RESET option in the menu, ifpresent.
4. If the second CableCARD™ is successful, make sure the Cable Co CustomerService Rep or Dispatcher knows the new MAC ID and Cable CARD™ ID tocomplete the paring.
5. Check the CableCARD™ Tools menu options. If the second CableCARD™fails to bring up the User Interface screen, the installer should refer to thediagnostic menus of the Host TV for further troubleshooting. The installer canpull up the User Interface screen manually through the menu choices.
The installer can confirm the status of the CableCARD™ and the ForwardData Carrier (FDC). The list of CableCARD™ options will vary, depending onyour cable service provider or CableCARD™ manufacturer.
6. If the CableCARD™ is still having problems, the installer should report theproblem to the Cable Company dispatcher for troubleshooting. If the cablecompany dispatcher (head end personnel) has completely checked theirchannel set-up, confirmed the accounting/billing system is correct, and hasconfirmed normal channel map with other DCR TVs at the headend, then goon to the next step.
7. If the installer determines that the Host TV device is the problem (unit failedeither item 2a or 3b above) and can go no further in correcting the problem,or if the installer determines that the pairing screen cannot be displayed withmultiple CableCARD™s, the installer should consider the Host TV is at fault.
8. If using a Set Top Box (STB) allows the customer to receive services on thesuspected Host TV, the STB should be used until the customer resolves theissue with the Host TV manufacturer.
9. If the installer is able to install the CableCARD™ device and access the UserInterface screen (also referred to as MMI screen), and has relayed theinformation to the dispatcher, but is still not receiving encrypted programming,this programming may be protected through the use of copy protectiondirective. The installer needs to ensure that the information passed to thecable operator is correct. Relay again the Host ID, CableCARD™ ID and DataID (Motorola only). Cable operator will send a hit to the CableCARD™ oncethe information is checked and verified. The CableCARD™ must be paired
Page 29
to the Host before copy protected programming can be displayed. Note thatit may take several minutes from the time operator sends the authorization tillit reaches the Host TV.
10.The MMI screens should be checked to verify if the authorization has beenreceived. For Scientific Atlanta systems the pairing screen should say“Authorization Received.” For Motorola the Conditional Access MMI Stateparameter should say “Subscribed”. If encrypted programming is still notdisplayed, the Host TV may be the problem.
Items to consider:• Make sure the dispatcher is “addressing” the CableCARD™ through the right
“plant” or head end.• OOB (FDC) signal levels and adjacent channel interference should be
checked.• Verifying that the dispatcher has the correct numbers is not always sufficient.
There are reports from the field that the authorization may have to be sent twoor three times to authorize the card.
Page 30
Authentication Process Flow ChartThe following flow chart adds a possible solution to key steps in the authenticationprocess if that process fails to complete. The 80% and 20% columns in each boxindicate which device is suspect that percent of the time. Looking at the first processfailed decision (YES), the CableCARD™ would be suspect 80% of the time while theHost TV is suspect 20% of the time.
Figure 14; Authentication Process Flow Chart
Cable Card™Inserted first time
START
OSD indicatingCable CARD™was detected is
displayed
Down loading ofChannel list
occurs
Paring InformationScreen is
displayed forcustomer.
Customer must contactCable Operator andprovide displayed
information
Paring betweenCable CARD™
and HOST occurs
Hostcommunicates
with CableCARD™
Communicationcomplete waiting
for information fromCable Co.
Channel list loaded intoHOST memory and
channel searchblocked for cable
Host and CableCARD™ wait forcable co to send
paring information
Cable operatorsets up
customer intheir system.
Data transferfrom head endto host / cablecard occurs
Host and Cable CARD™are paired and decryption
of encrypted channelsoccurs.
Encryptedchannels
available forviewing
Channel Viewingby customer
ProcessFailed?
ProcessFailed?
ProcessFailed?
ProcessFailed?
ProcessFailed?
ProcessFailed?
NO
NO
NO
NO
NO
Suspect CableCARD™
Suspect CableSystemYES
YES
Suspect Host TVYES
Suspect CableSystemYES
Suspect CableSystem or Pairing
Process.YES
Suspect Host TVYES
NO
Suspect Host TV
Suspect Host TVor Cable Card
Suspect CableCard or Cable
System
Suspect Host TVor Cable Card
Suspect Host TVor Cable Card
Suspect CableCard or Cable
System or PairingProcess.
80%of the time
20%of the time
Note: If the pairing process fails at any time,wait 15 minutes and try the process again.
Page 31
Common ProblemsThe following are common issues related to Cable CARD™ and Host TVoperation.
1. Can’t view encrypted channels:• CableCARD™ not authorized for these channels• CableCARD™ defective
2. Can’t get CableCARD™ to pair with Host TV:• Weak signal on cable• Wrong or defective splitter in cable system• Amplifier in cable system not passing OOB signal• No direct connection to cable input on Host TV. (VCR, DVR, STB, etc
between cable head-end and Host TV)
3. CableCARD™ was working but stopped or locked up:• Host TV and CableCARD™ lost sync (RESET Host TV and
CableCARD™)• CableCARD™ failed• CA system lists CableCARD™ ID as revoked
4. Can’t get CableCARD™ to work but set top box will work:• Wrong or defective CableCARD™• Weak cable signal to Host TV• Network Setup incorrect; Hunt for new OOB channel.• Wrong Configuration at Head-end
5. Missing channels after CableCARD™ was inserted:• Cable head-end not sending out the correct channel map• Missing channels are scrambled and not authorized for viewing
6. Cable channel list changed after CableCARD™ was inserted:• See # 5 “Missing Channels after CableCARD™ was inserted”
7. Cable channel list is incorrect when CableCARD™ is inserted:• See # 5 “Missing Channels after CableCARD™ was inserted”
8. Receiving error message 161-XX, what does it mean:• Refer to Error code table on page 24
Page 32
AIT Application Information TableAPI Application Program InterfaceATSC Advanced Television System CommitteeAWT Abstract Windowing ToolkitBFS Broadcast File System.BNF Backus-Naur FormCA Conditional AccessCATV Cable TVCCI Copy Control InformationCORBA Common Object Request Broker ArchitectureCP Content ProtectionCRC Cyclic Redundancy CheckCRL Certificate Revocation ListDAVIC Digital Audio Visual CouncilDECT Digital Enhanced Cordless TelecommunicationsDHCP Dynamic Host Configuration ProtocolDII Down load Info IndicationDOCSIS Data-Over-Cable Service Interface SpecificationDSM-CC Digital Storage Media—Command and Control. Part 6 of the MPEG-2standardDSM-CC-OC Digital Storage Media—Command and Control Object CarouselDSM-CC-UU Digital Storage Media—Command and Control User to UserDTD Document Type DefinitionDVB Digital Video BroadcastingDVS Digital Video SubcommitteeDTVCC Digital Television Closed CaptioningEAS Emergency Alert SystemECM Entitlement Control MessageEE Execution EngineEIA Electronic Industry AllianceEN European NormsEPG Electronic Program GuideES Elementary StreamETS European Telecommunications StandardETSI European Telecommunications Standard InstituteExCCI Extended Copy Control InformationFCC Federal Communications CommissionGEM Globally Executable MHPGSM Global System for Mobile CommunicationsHAVi Home Audio/Video interoperability.HDNI Home Digital Network InterfaceHDTV High Definition TelevisionHTML Hypertext Mark-up Language
Acronyms
Page 33
HTTP Hypertext Transport ProtocolIETF Internet Engineering Task ForceIP Internet ProtocolISO International Organization for StandardizationITU International Telecommunication UnionITV Interactive TelevisionJDK Java Development KitJFIF JPEG File Interchange FormatJMF Java Media FrameworkJSSE Java Secure Socket ExtensionLMDS Local Multipoint Distribution SystemMA Monitor ApplicationMAC Media Access ControlMHP Multimedia Home PlatformMMDS Multipoint Microware Distribution SystemMMI Man Machine InterfaceMPEG Moving Picture Expert GroupMSO Multiple Service OperatorMIME multipurpose internet mail extensionsNCTA National Cable Telecommunications AssociationNPT Normal Play TimeNTSC National Television Systems CommitteeNVOD Near-Video-On-DemandOCAP OpenCable Application PlatformOOB channel Out-Of-Band channelOOB-FDC Out-Of-Band Forward-Data-ChannelOOB-RDC Out-Of-Band Reverse-Data-ChannelOS Operating SystemPCR Program Clock ReferencePES Packetized Elementary StreamPHILA POD Host Interface License AgreementPID Packet Identification numberPMT Program Map TablePOD Point of Deployment modulePPV Pay-per-viewPSIP Program and System Information ProtocolPSTN Public Switched Telephone NetworkPVR Personal Video RecorderRCMM Root Certificate Management MessagesRMI Remote Method InvocationSCTE Society of Cable Telecommunications EngineersSDP Session Description Protocol
Page 34
SI Service InformationSMATV Satellite Master Antenna TVSSL Secure Sockets LayerSTC System Time ClockTLS Transport Layer SecurityUI User InterfaceURI Universal Resource IdentifierURL Uniform Resource LocatorUTC Coordinated Universal TimeVBI Vertical Blanking IntervalVCT Virtual Channel TableVOD Video-On-DemandXAIT Extended Application Information Table
TCableCardTroubleshootingGuide
Prepared byThomson, Inc for TTE Technology, Inc.Technical Training Department, INH905PO Box 1976Indianapolis, Indiana 46206 U.S.A.
10
101 0
1
0
1
1
01
0
10
1
01
0
1
0
10
10
1
01
0
1 0
01
0
1
RED OUTPUT194V
TP50
TOE8
RED BIAS<21-B>
E5003
E5007TOE7
GRN BIAS
0
1
1
0
0
0
0 1 11 0
VERTICAL
1
1
1
0
TP24
0
1
1
0
0
01
1
01
0
1
1
0
0
01
1
01
TTI GIS 04-001
GIS 05-001File In Appropriate Section of YourThomson Technical Bulletin Binder
GENERAL INFORMATIONSERIES
Product Support & Technical Training Mail Stop INH905 P.O. Box 1976 Indianapolis, IN 46290-1102
DLP UHP Lamp / Lamp Ballast Characteristics
As with all troubleshooting, a good understanding of the circuit or process is needed. We will coverthe fundamentals of Lamp Strike or Ignition, Lamp Lit (Burn), and Defective Lamp. After thefundamentals have been covered we can begin to troubleshoot the Lamp and Lamp Ballast.
Basic Lamp Construction:
In the DLP line up there are several different Lamp / Ballast venders. For each vender the Lampdesign is mated with the ballast design and the light engine that controls the ballast. These parts areNOT interchangeable between venders. When replacing a lamp or ballast always refer to the servicemodel with suffix to insure the correct part is ordered.
First Edition - First PrintingCopyright 2005 Thomson, Inc.Trademark(s)® Registered Marca(s) Registrada(s)RCA and the RCA logos are trademarks of THOMSONS.A. used under license to TTE CorporationPrinted in U.S.A.
Prepared byThomson, Inc for TTE Technology, Inc.Technical Training Department, INH905PO Box 1976Indianapolis, Indiana 46206 U.S.A.
Side Connector
Reflector
Lead Wire
Back Connector
Arc Tube
DATE: 02/16/2005
Hg
WARNING: EYE DAMAGE MAY RESULT FROM DIRECTLY VIEWING THE LIGHT PRODUCED BY THE LAMP.ULTRAVIOLET RADIATION EYE PROTECTION IS REQUIRED DURING SERVICING.
TTI GIS 05-001Page 2
The basic construction of a Lamp consists of:
• Arc Tube
• Back Connector
• Reflector (Lamp Assembly)
• Lead Wire
• Side Connector
Arc Tube: This is where the arc takes place and is also known as the “burner”. Internal to the arc tubeare two electrodes made of tungsten. Surrounding these electrodes is mercury vapor and othergasses. To generate the arc, the electrodes are supplied with high voltage. Once the arc hasjumped the gap between the electrodes, current starts to flow and the lamp is lit. The operatingpressure inside the Arc Tube is around 200 bar.
There are two connectors, Back Connector and Side Connector. These connectors provide electricalconnection between the Ballast Supply and the Arc Tube through the Lamp Assembly.
Reflector (Lamp Assembly): The reflector reflects the light generated by the Arc Tube into a focusedbeam used by the light engine.
Side Connector
Reflector
Lead Wire
Back Connector
Arc Tube
Hg
HgThis symbol indicates that the lamp in the HDTV containsmercury. Disposal of these materials may be regulateddue to enviromental considerations. For disposal or recy-cling information, pleas contact your local authorities orthe Electronic Industries Alliance: www.eiae.org
TTI GIS 05-001 Page 3
Lamp Characteristics
The above graph shows the characteristics of a UHP lamp over its life cycle. As the lamp ages, thelight output decreases with the erosion of the electrodes. Because of the eroding electrodes, boththe lamp operating voltage and number of strikes required to start a cold lamp increases. Thenumber of strikes required to start a hot lamp also increases over time but starts out slightly higherthan cold strikes. A “HOT” strike is defined as striking a lamp that is above room temperature.
There are several conditions that decrease or shorten the life of the lamp. A few are listed here:
• Heat (Improper Ventilation)
• Shock (moving unit while in operation)
• Fast paced cycling set on and off
Heat is by far the worst condition of them all. With out proper ventilation, the lamp life can be reducedby 75% or better. Thermo protection is used to shutdown the lamp if excessive heat is detected.
Lamp Strike (Ignition)
The voltage required to ignite the lamp varies by lamp manufacture. Also, the number of ignitioncycles it takes to light the lamp may vary. As the lamp ages, more ignition cycles may be requiredto start the lamp. Typically, the ignition voltage is from 5Kv to 20Kv.
# Strikes to start (cold lamp)
Lamp Output
Lamp Operating Voltage
Characteristics of UHP Lamp
0Life Span (t)
Valu
e
NEW REPLACE
# Strikes to start (HOT lamp)
TTI GIS 05-001Page 4
When the lamp is hot it is more difficult to ignite then when cold. As the temperature increases sodoes the pressure in the Arc Tube. With the higher pressure, the lamp may require additional striketimes to get the Arc Tube to light.
When a lamp fails to strike there is an indication besides the obvious lack of light output. If the lampfails to strike the DLP front panel LED will blink a sequence (see service data or IB for number oftimes power LED blinks for each model). In DM3 based models this will repeat for up to 5 minutesafter which time the power LED will start to flash rapidly for about 1 minute. The blinking of the powerLED occurs after each failed attempt to strike the lamp. The LED blinking sequence is not a replacelamp indicator, this only indicates that the lamp has failed to strike. A open lamp door will also causethe LED to blink in the same manner. Multiple strike failures could indicate a defective lamp or lampballast supply.
Lamp Lit (Burn)Once the lamp starts to draw current, the voltage to the lamp drops significantly. This indicates thelamp is in the operating state. The typical voltage for operating is approximately 70-100VAC. Thisis measured between the lamp back and side connectors. As the lamp ages this voltage will increase.When the voltage reaches approximately 125VAC, the ballast supply will send information to thelight engine indicating the lamp is defective. At that point the Light Engine will shutdown the ballastsupply.
Defective LampAs the lamp ages two things happen. One is the number of strikes to start the lamp operatingincreases and the other is the lamp operating voltage increases. A lamp is considered defectivewhen it consistently takes more than three strikes to light the lamp or the lamp operating voltageexceeds approximately 125VAC. Depending on the set, some will strike the lamp indefinitely otherswill stop after 5 minutes. A defective lamp may never strike or take several minutes to light. Anotherindication of a defective lamp is when the lamp lights and after reaching full brightness it shuts off. Alamp nearing the end of life is verified by monitoring the lamp run voltage. The lamp is considered
TTI GIS 05-001 Page 5
defective if the run voltage is within a few volts of 125VAC. NOTE: As the lamp lights and heats upthe lamp run voltage climbs slightly.
WARNING: EYE DAMAGE MAY RESULT FROM DIRECTLY VIEWING THE LIGHTPRODUCED BY THE LAMP. ULTRAVIOLET RADIATION EYE PROTECTION IS REQUIREDDURING SERVICING.
Lamp Troubleshooting TipsLamp lights and shuts down:
• Thermo protection (poor ventilation)
• Lamp run voltage exceeding approximately 125V
Lamp intermittent or won’t light consistantly after 3 strikes:
• Remove Lamp assembly and check for loose connectors on lamp, tighten as needed.
• If the lamp successfully lights, check lamp run voltage. If over 120VAC, suspect lamp.
• During strikes, is the spark gap on the ballast supply arcing and making noise? Yes,suspect lamp. No, see Ballast Supply Troubleshooting.
• Lamp door open or defective lamp door switch
Lamp Ballast Supply Troubleshooting Tips1. Check to make sure all supply voltages are present at the lamp ballast supply.
2. Remove Lamp assembly from instrument
3. Start set and monitor spark gap on ballast supply
4. Is the ballast supply spark gap arcing and making noise? Yes, suspect Lamp. No, suspectballast supply.
NOTE: Measuring the lamp voltage during a strike will damage most meters. It is recommendedthat the lamp voltage only be measured when the lamp is lit.
HgThis symbol indicates that the lamp in the HDTV containsmercury. Disposal of these materials may be regulateddue to enviromental considerations. For disposal or recy-cling information, pleas contact your local authorities orthe Electronic Industries Alliance: www.eiae.org
TTI GIS 04-001 Printed In U.S.A.
Questions About New Technology?These may include training topics, trouble-shooting procedures, new technology over-views or just about anything that interests youin the world of consumer electronics. We'llreview all the suggestions and respond witharticles on the most popular responses.Please send your ideas and suggestions tothe address listed below.
The General Information Series (GIS) hasbeen developed to keep you up to date in therapidly changing field of consumer electron-ics. New technology is emerging continuouslyand the GIS newsletter has been created tokeep you informed in this ever changing in-dustry. To make this publication successful,we need your input! Your suggestions andideas are needed to make sure that we coverthe subjects that interest you.
Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury. First Edition First Printing Copyright 2003 Thomson multimedia Inc. Printed in U.S.A. Trademark(s) ® Registered Marca(s) Registrada(s)
Page 1 of 4
THOMSON INC.
Plug set in.Do not Press the power
button.
Do you hear the relayK24251 click ?
Check lamp interlock switch(J13101) and the 12VS
supply on J13101.
Does the power LEDlight and then turn off ? Suspect Power Supply.
Suspect DM-2CR Module.Continue to
page 2.
YES
YES
1A
2A 2B 2C
NO
Check the standby powersupplies to the DM-2CR.
+- 5,6,12,33 vdc onconnectors J24604,
J24605. Refer to Note 1
NO
1B
NOTE 1Refer to the serviceinformation for the
correct voltage & pin-outlocations.
NO
YES
2D
TFC-04004C
Television
THOMSON TECHNICAL COMMUNICATION
The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product.
Troubleshooting Flow Chart
TOPIC: DLP Troubleshooting
Model(s): ATC311 DLP HDLP (50, 60, 61) W151 or HD (50, 61) LPW42
REVISION DATE: 04/15/2005
SYMPTOM: Cycles, Shutdown, No Start
Press power button.
Does the power LED light upor flash and the relay click ?
Check the power supplyvoltages supplied to the
Formatter PCB. ConnectorBP503
Refer to Note 1
Continue to page 3
5A
4A
3A
6A
Check the FPA, IR Preamp,DM-2CR and inspect all
cables for proper seating.Replace any that appear to
have been stressed.
7AHookup Chipper Check
and review the errorcodes. Attempt a Hard-reboot. Refer to Note 2
YES
Are the voltages on theP1connector "Light
Engine"correct? Refer toChart 1 on page 4
Does the colorwheel spin or atleast attempt to
spin?
6B
Note 2The DM-2 reboot sequenceis Press & Hold "Pwr" and
"CH Down" at the same timeon the FPA for three
seconds.
4B
NO
NO
NO
YES
Disconnect J26403 (Audio +-21VDC) on the AC power
supply board. If the set runssuspect a problem on the audio
board
YES
5A
6A
7A 7B
Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury. First Edition First Printing Copyright 2003 Thomson multimedia Inc. Printed in U.S.A. Trademark(s) ® Registered Marca(s) Registrada(s)
Page 2 of 4
THOMSON INC.
Is the lamp lighting?
If missing, check thepower supply input to the
formatter board
Does the lampincrease up to full
brightness?
Is the voltage correct onJ4(1) connector? Referto Chart 2 on page 4
On J4(3,5) is the 5VRthere at turn on?
YES
Suspect DM2-CR Module
Suspect a defectiveLight Engine.
YES
8B
11A
YES
9B
9A
10A
8A
Suspect Lamp, Lamp ballastpower supply
10B
11B
Confirm that on the X1connector, (located on the
lamp ballast power supply),that the DC voltage is
~ 300 VDC.Also referencing Chart 2
measure the DC voltage onconnector J4 (4) on the "Light
Engine"
YES
NO
NO
NO
NO
Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury. First Edition First Printing Copyright 2003 Thomson multimedia Inc. Printed in U.S.A. Trademark(s) ® Registered Marca(s) Registrada(s)
Page 3 of 4
THOMSON INC.
Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury. First Edition First Printing Copyright 2003 Thomson multimedia Inc. Printed in U.S.A. Trademark(s) ® Registered Marca(s) Registrada(s)
Page 4 of 4
THOMSON INC.
CHART 1 BW902 P1
CHART 2
J4 Connector Pin Description DC voltages in
the off mode DC voltages at turn-on
DC voltages at run
1 Ballast Lamp Lit L H (5v) L 2 Ground L 0 0 3 5VR 0 5 5 4 Ballast Enable Line 0 2.5 3.25 5 5VR 0 5 5
Description Pin # Voltage Pin # Ground 1 0 12 5 VR 2 5 Vdc 11 Power Good 3 3.3 Vdc 10 Ground 4 0 9 2.5VR 5 2.5Vdc 8 2.5VR 6 2.5Vdc 7 Ground 7 0 6 Ground 8 0 5 3.3VR 9 3.3Vdc 4 3.3VR 10 3.3Vdc 3 Ground 11 0 2 12VR 12 12Vdc 1