manual jvc ya589
TRANSCRIPT
SERVICE MANUAL
COPYRIGHT © 2008 Victor Company of Japan, Limited No.YA589<Rev.001>2008/6
LCD FLAT TELEVISIONYA589<Rev.001>20086SERVICE MANUAL
LT-42P789/C
COPYRIGHT © 2008 Victor Company of Japan, Limited<FN3 CHASSIS LINEUP>
TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-84 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-155 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
MODEL NO.
RATING LABEL (REAR) MODEL NO. LABEL (SIDE)
CAA
VERSION
LT-42P789
MODEL NAME
There may be multiple versions of
this TV model.
The TV version is identified by the
letters next to the model number
on the TV s Rating and Model No.
labels. (See illustration).
Use the service manual that
matches the version of the TV.
BASIC CHASSIS
FN3
No.YA590: LT-32P679 No.YA589: LT-42P789 No.YA591: LT-47P789
No.YA592: LT-32E479, LT-32EM49 No.YA593: LT-42X579, LT-42EM59 No.YA594: LT-47X579, LT-47EM59
1-2 (No.YA589<Rev.001>)
SPECIFICATION
Design & specifications are subject to change without notice.
Items ContentsDimensions ( W × H × D ) 101.4 cm × 73.4 cm × 29.6 cm (40" × 29" × 11-3/4") [with stand]
101.4 cm × 67.7 cm × 11.7 cm (40" × 26-3/4" × 4-3/4") [without stand]Mass 26.0 kg (57.2 lbs) [with stand]
24.0 kg (52.8 lbs) [without stand]Power Input AC120 V , 60 HzPower Consumption 247W (Max)TV RF System(Analog / Digital)
AnalogDigital
CCIR (M)ATSC terrestrial / Digital cable
Color System (Analog) NTSCStereo System (Analog) BTSC (Multi Channel Sound)Teletext System (Analog) Closed caption (T1-T4 / CC1-CC4)TV Receiving Channels and Frequency (Analog)
VHF LowVHF High
UHFCATV
02 ch - 06 ch : 54 MHz - 88 MHz07 ch - 13 ch : 174 MHz - 216 MHz14 ch - 69 ch : 470 MHz - 806 MHz54 MHz - 804 MHzLow Band : 02 - 06High Band : 07 - 13Mid Band : 14 - 22Super Band : 23 - 36Hyper Band : 37 - 64Ultra Band : 65 - 94, 100 - 135Sub Mid Band : 01, 96 - 99
TV / CATV Total Channel 191 ChannelsIntermediate Frequency (Analog)
Video IFSound IF
45.75 MHz41.25 MHz (4.5 MHz)
Color Sub Carrier Frequency (Analog) 3.58 MHzLCD Panel 42V-inch wide aspect (16:9)Screen Size Diagonal: 106.7 cm (H: 93.0 cm × V: 52.3 cm)Display Pixels Horizontal : 1920 dots × Vertical : 1080 dotsAudio Power Output 10 W + 10 WSpeaker 4.0 cm × 16.0 cm, oval type(Oblique corn) × 2Antenna Terminal(VHF/UHF, ATSC / DIGITAL CABLE IN)
F-type connector, 75Ω unbalanced, coaxial × 1
Digital Input[INPUT-1/2/3]
Digital(Video/Audio) HDMI 2-row 19pin connector × 3(Digital-input terminal is not compatible with picture signals of personal computer)Video: Supported format: 1080p / 1080i / 720p / 480p / 480iAudio: 2ch L-PCM, 32 / 44.1 / 48 KHz, 16 / 20 / 24 bit
Analog (Audio) 500mV(rms) (-4dBs), high impedance, RCA pin jack × 2 Video / Audio Input[INPUT-4]
Component Video1080i / 720p
480p / 480i
RCA pin jack × 3Y : 1 V (p-p) (Sync signal: 0.35V(p-p), 3-value sync.), 75 Ω Pb/Pr : ±0.35V(p-p), 75 ΩY : 1 V (p-p), Positive (Negative sync.), 75 ΩCb/Cr : 0.7V(p-p), 75 Ω
S-Video Mini-DIN 4 pin × 1Y: 1 V (p-p), Positive (Negative sync.), 75 ΩC: 0.286V (p-p) (Burst signal), 75 Ω
Video 1 V (p-p), Positive (Negative sync.), 75 Ω, RCA pin jack × 1Audio 500 mV (rms), High impedance, RCA pin jack × 2
Video / Audio Input[INPUT-5]
Component Video1080i / 720p
480p / 480i
RCA pin jack × 3Y : 1 V (p-p) (Sync signal: 0.35V(p-p), 3-value sync.), 75 Ω Pb/Pr : ±0.35V(p-p), 75 ΩY : 1 V (p-p), Positive (Negative sync.), 75 ΩCb/Cr : 0.7V(p-p), 75 Ω
Video 1 V (p-p), Positive (Negative sync.), 75 Ω, RCA pin jack × 1Audio 500 mV (rms), High impedance, RCA pin jack × 2
Audio output (Fix) 500 mV (rms), Low impedance, RCA pin jack × 2Digital Audio Optical Output Digital SPDIF × 1Photo Viewer / Service USB connector × 1Remote Control Unit RM-C1480 (AA/R6 battery × 2)
(No.YA589<Rev.001>)1-3
SECTION 1PRECAUTION
1.1 SAFETY PRECAUTIONS(1) The design of this product contains special hardware,
many circuits and components specially for safetypurposes. For continued protection, no changes should bemade to the original design unless authorized in writing bythe manufacturer. Replacement parts must be identical tothose used in the original circuits. Service should beperformed by qualified personnel only.
(2) Alterations of the design or circuitry of the products shouldnot be made. Any design alterations or additions will voidthe manufacturer's warranty and will further relieve themanufacturer of responsibility for personal injury orproperty damage resulting therefrom.
(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. Thesecharacteristics are often not evident from visual inspectionnor can the protection afforded by them necessarily beobtained by using replacement components rated forhigher voltage, wattage, etc. Replacement parts whichhave these special safety characteristics are identified inthe parts list of Service manual. Electrical componentshaving such features are identified by shading on theschematics and by ( ) on the parts list in Servicemanual. The use of a substitute replacement which doesnot have the same safety characteristics as therecommended replacement part shown in the parts list ofService manual may cause shock, fire, or other hazards.
(4) Don't short between the LIVE side ground andISOLATED (NEUTRAL) side ground or EARTH sideground when repairing. Some model's power circuit is partly different in the GND.The difference of the GND is shown by the LIVE : ( ) sideGND, the ISOLATED (NEUTRAL) : ( ) side GND andEARTH : ( ) side GND. Don't short between the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND and nevermeasure the LIVE side GND and ISOLATED (NEUTRAL)side GND or EARTH side GND at the same time with ameasuring apparatus (oscilloscope etc.). If above note willnot be kept, a fuse or any parts will be broken.
(5) When service is required, observe the original lead dress.Extra precaution should be given to assure correct leaddress in the high voltage circuit area. Where a short circuithas occurred, those components that indicate evidence ofoverheating should be replaced. Always use themanufacturer's replacement components.
(6) Isolation Check (Safety for Electrical Shock Hazard) After re-assembling the product, always perform anisolation check on the exposed metal parts of the cabinet(antenna terminals, video/audio input and output terminals,Control knobs, metal cabinet, screw heads, earphone jack,control shafts, etc.) to be sure the product is safe to operatewithout danger of electrical shock.
a) Dielectric Strength Test The isolation between the AC primary circuit and all metalparts exposed to the user, particularly any exposed metalpart having a return path to the chassis should withstand avoltage of 3000V AC (r.m.s.) for a period of one second. (.. . . Withstand a voltage of 1100V AC (r.m.s.) to anappliance rated up to 120V, and 3000V AC (r.m.s.) to anappliance rated 200V or more, for a period of one second.) This method of test requires a test equipment not generallyfound in the service trade.
b) Leakage Current Check Plug the AC line cord directly into the AC outlet (do not usea line isolation transformer during this check.). Using a"Leakage Current Tester", measure the leakage currentfrom each exposed metal part of the cabinet, particularlyany exposed metal part having a return path to the chassis,to a known good earth ground (water pipe, etc.). Anyleakage current must not exceed 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.2mA AC(r.m.s.). Alternate Check Method
Plug the AC line cord directly into the AC outlet (do notuse a line isolation transformer during this check.). Usean AC voltmeter having 1000Ω per volt or moresensitivity in the following manner. Connect a 1500Ω10W resistor paralleled by a 0.15µF AC-type capacitorbetween an exposed metal part and a known good earthground (water pipe, etc.). Measure the AC voltageacross the resistor with the AC voltmeter. Move theresistor connection to each exposed metal part,particularly any exposed metal part having a return pathto the chassis, and measure the AC voltage across theresistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Any voltage measured mustnot exceed 0.75V AC (r.m.s.). This corresponds to0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.3V AC(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART1500 10W
0.15 F AC-TYPE
GOOD EARTH GROUND
1 - 4 ( N o . Y A 5 8 9 < R e v . 0 0 1 > )
1.2 INSTALLATION1.2.1 HEAT DISSIPATIONIf the heat dissipation vent behind this unit is blocked, coolingefficiency may deteriorate and temperature inside the unit willrise. The temperature sensor that protects the unit will beactivated when internal temperature exceeds the pre-determinedlevel and power will be turned off automatically.Therefore,please make sure pay attention not to block the heat dissipationvent as well as the ventilation outlet behind the unit and ensurethat there is room for ventilation around it.
1.2.2 INSTALLATION REQUIREMENTSEnsure that the minimal distance is maintained, as specifiedbelow, between the unit with and the surrounding walls, as wellas the floor etc.Install the unit on stable flooring or stands.Takeprecautionary measures to prevent the unit from tipping in orderto protect against accidents and earthquakes.
1.2.3 INSTALLATION REQUIREMENTSTo ensure safety in an emergency such as an earthquake, andto prevent accidents, ensure that measures are taken to preventthe TV dropping or falling over.
1.2.4 NOTES ON HANDLINGWhen taking the unit out of a packing case, do not grasp theupper part of the unit. If you take the unit out while grasping theupper part, the LCD PANEL may be damaged because of apressure. Instead of grasping the upper part, put your hands onthe lower backside or sides of the unit.
1.3 HANDLING LCD PANEL1.3.1 PRECAUTIONS FOR TRANSPORTATIONWhen transporting the unit, pressure exerted on the internal LCDpanel due to improper handling (such as tossing and dropping)may cause damages even when the unit is carefully packed. Toprevent accidents from occurring during transportation, paycareful attention before delivery, such as through explaining thehandling instructions to transporters.Ensure that the following requirements are met duringtransportation, as the LCD panel of this unit is made of glass andtherefore fragile:
(1) USE A SPECIAL PACKING CASE FOR THE LCD PANELWhen transporting the LCD panel of the unit, use a specialpacking case (packing materials). A special packing caseis used when a LCD panel is supplied as a service sparepart.
(2) ATTACH PROTECTION SHEET TO THE FRONTSince the front (display part) of the panel is vulnerable,attach the protection sheet to the front of the LCD panelbefore transportation. Protection sheet is used when a LCDpanel is supplied as a service spare part.
(3) AVOID VIBRATIONS AND IMPACTSThe unit may be broken if it is toppled sideways even whenproperly packed. Continuous vibration may shift the gap ofthe panel, and the unit may not be able to display imagesproperly. Ensure that the unit is carried by at least 2persons and pay careful attention not to exert any vibrationor impact on it.
(4) DO NOT PLACE EQUIPMENT HORIZONTALLYEnsure that it is placed upright and not horizontally duringtransportation and storage as the LCD panel is veryvulnerable to lateral impacts and may break. Duringtransportation, ensure that the unit is loaded along thetraveling direction of the vehicle, and avoid stacking themon one another. For storage, ensure that they are stackedin 2 layers or less even when placed upright.
*The drawing may differ from the actual appearance.
Ventilation hole
*The drawing may differ from the actual appearance.
150 mm
5 7/8 inch
200 mm
7 7/8 inch
50 mm
2 inch
150 mm
5 7/8 inch
200 mm
7 7/8 inch
It fixes in a band.
TV STAND
*The drawing may differ from the actual appearance.
(No.YA589<Rev.001>)1-5
1.3.2 OPTICAL FILTER (ON THE FRONT OF THE LCD PANEL)(1) Avoid placing the unit under direct sunlight over a
prolonged period of time. This may cause the optical filterto deteriorate in quality and color.
(2) Clean the filter surface by wiping it softly and lightly with asoft and lightly fuzz cloth (such as outing flannel).
(3) Do not use solvents such as benzene or thinner to wipe thefilter surface. This may cause the filter to deteriorate inquality or the coating on the surface to come off. Whencleaning the filter, usually use the neutral detergent dilutedwith water. When cleaning the dirty filter, use water-dilutedethanol.
(4) Since the filter surface is fragile, do not scratch or hit it withhard materials. Be careful enough not to touch the frontsurface, especially when taking the unit out of the packingcase or during transportation.
1.3.3 PRECAUTIONS FOR REPLACEMENT OF EXTERIORPARTS
Take note of the following when replacing exterior parts (REARCOVER, FRONT PANEL, etc.):
(1) Do not exert pressure on the front of the LCD panel (filtersurface). It may cause irregular color.
(2) Pay careful attention not to scratch or stain the front of theLCD panel (filter surface) with hands.
(3) When replacing exterior parts, the front (LCD panel) shouldbe placed facing downward. Place a mat, etc. underneathto avoid causing scratches to the front (filter surface).
SECTION 2SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURESTeleDock
By inserting your iPod into the TeleDock, you can displaymovies or music on your TV from your iPod. Also, whileinserted you can recharge your iPod.
Built in ATSC (Advanced Television Systems Committee)TUNER
This TV can receive both Digital broadcasting (ATSC) andAnalog broadcasting.
Color ManagementThis function ensures dull colors are compensated to producenatural hues.
Smart PictureThis function detects the APL (Average Picture Level) andadjusts the contrast suitable for what you are watching.
DIGITAL VNRThis function cuts down the amount of noise in the originalpicture.
MPEG Noise Reduction This function effects the block noise removal and mosquito NRsimultaneously.
Item ContentsSupport Models of iPod iPod: 4G/Photo/5G/Classic
iPod nano: 1G/2G/3GiPod mini: 1G/2GiPod touch
Support format for movie H.264, MPEG-4
Support format for audio AAC, MP3, AppleLossless, WAV,AIFF
Support format for picture JPEG, BMP, GIF, TIFF, PSD, PNG
1-6 (No.YA589<Rev.001>)
2.2 TECHNICAL INFORMATION2.2.1 LCD PANELThis unit uses the flat type panel LCD (Liquid Crystal Display) panel that occupies as little space as possible, instead of theconventional CRT (Cathode Ray Tube), as a display unit.Since the unit has the two polarizing filter that are at right angles to each other, the unit adopts "normally black" mode, where lightdoes not pass through the polarizing filter and the screen is black when no voltage is applied to the liquid crystals.
2.2.1.1 SPECIFICATIONSThe following table shows the specifications of this unit.
2.2.1.2 PIXEL FAULTThere are three pixel faults - bright fault , dark fault and flicker fault - that are respectively defined as follows.
BRIGHT FAULTIn this pixel fault, a cell that should not light originally is lighting on and off.For checking this pixel fault, input ALL BLACK SCREEN and find out the cell that is lighting on and off.
DARK FAULTIn this pixel fault, a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting.For checking this pixel fault, input 100% of each R/G/B color and find out the cell that is not lighting.
FLICKER FAULTIn the pixel fault, a cell that should light originally or not light originally is flashing on and off.For checking this pixel fault, input ALL BLACK SCREEN signal or 100% of each RGB color and find out the cell that is flashing onand off.
Item SpecificationsMaximum dimensions ( W × H × D ) 98.3 cm × 57.6 cm × 5.2 cm
Weight 13.0 kg
Effective screen size Diagonal: 106.7 cm (H: 93.0 cm × V: 52.3 cm)
Aspect ratio 16 : 9
Drive device / system a-Si-TFT active matrix system
Resolution Horizontally 1920 × Vertically 1080 × RGB <W-UXGA> 6220800 dots in total
Pixel pitch (pixel size) Horizontally: 0.1615 mm, Vertically: 0.4845 mm
Displayed colour 16777216 colours 256 colours for R G and B
Brightness 500 cd/m2
Contrast ratio 2000 : 1
Response time 6.5 ms
View angle Horizontally: 176°, Vertically: 176°
Surface polarizer Anti-Glare type Low reflective coat
Colour filter Vertical stripe
Backlight Cold cathode fluorescent lamp × 20
Power supply voltage in LCD 12 V
Power supply voltage in inverter 24 V
Panel interface system LVDS (Low Voltage Differential Signaling)
(No.YA589<Rev.001>)1-7
2.2.2 SUB MICRO COMPUTER (CPU) FUNCTION [SIGNAL PWB: IC2501]
Pin No. Pin name I/O Function
1 P9_4 - Not used
2 P9_3 - Not used
3 P9_2 - Not used
4 P9_1 - Not used
5 P9_0 - Not used
6 BYTE I Data bus width select [L fixed]
7 CNVSS I CPU mode select [Normal = L]
8 P8_7 - Not used
9 XRES I Not used
10 RESET I CPU reset [Reset = L]
11 XOUT O Oscillation for system clock
12 VSS - GND
13 XIN I Oscillation for system clock
14 VCC1 - +3.3V power supply
15 NMI I Non-maskable interrupt [H fixed]
16 MCU_RESET2 I Interrupt detection for 24V power supply [Error = L]
17 POWER_KEY I Interrupt detection for mecanical POWER SW [On = L]
18 IR_33 I Remote control
19 P8_1 - Not used
20 P8_0 - Not used
21 LED_DIMMING O Brightness control for POWER LED [Bright = H]
22 LED_ON O Lighting for POWER LED [On = H]
23 AC_IN I Not used
24 ILLUMI_ON O Not used
25 VGA_DET I Not used
26 ILL_DIMMING O Not used
27 RX_NF I Serial data receive for iPod
28 TX_NF O Serial data transmission for iPod
29 TXD1 O Data transmission (serial) for external programming
30 RXD1 I Data receive (serial) for external programming
31 CLK1 I/O Clock for external programming
32 RTS1 O Busy for external programming
33 MCU_TXD O Serial data transmission for main CPU
34 MCU_RXD I Serial data receive for main CPU
35 P6_1 - Not used
36 P6_0 - Not used
37 P5_7 - Not used
38 P5_6 - Not used
39 HOLD I CPU mode select [L fixed]
40 P5_4 - Not used
41 P5_3 - Not used
42 P5_2 - Not used
43 P5_1 - Not used
44 P5_0 - Not used
45 nRESET O Reset for iPod controller [Reset = L]
46 CP_READY I Data ready for iPod controller
47 NF_CNTL2 O Lighting for iPod DOCK LED [On = H]
48 NF_CNTL1 O Lighting for iPod DOCK LED [On = H]
49 I2C_SDA I/O I2C bus (data) for iPod controller
50 I2C_SCL O I2C bus (clock) for iPod controller
51 EDID_WP O Programming control for EDID ROM [Protection = H]
52 NF_PPON O Not used
53 NF_OC O Not used
54 DET_NF I Detection for iPod connecting [Detect = L]
55 PFC_POW O Power on/off control for PFC [On = L]
56 CTL_SW O S-video signal select for INPUT-4 or iPod [iPod = H]
57 HP_DET I Not used
58 HP_WDOG I Watch dog reset for main CPU
59 P3_1 - Not used
60 VCC2 - +3.3V power supply
61 P3_0 Not used
62 VSS - GND
63 RESET_TU O Reset for tuner [Reset = L]
64 VCCH_RST O Reset for Vcch of main CPU [Reset = L]
65 RESET%_TRIDENT O Reset for main CPU & flash memory [Reset = L]
66 RESET_STV8258 O Not used
67 S_MUTE O Speaker output muting [Muting = H]
68 A_MUTE O Audio line output muting [Muting = H]
69 HP_MUTE O Not used
70 MAIN_POWER O Power on/off control for main power supply [On = L]
71 P1_7 - Not used
72 P1_6 - Not used
73 P1_5 - Not used
74 BKLT_CNTL O Not used
75 P1_3 - Not used
76 REG_SW1 O Power on/off control for regulator IC [On = H]
77 REG_SW2 O Power on/off control for regulator IC [On = H]
78 REG_SW3 O Power on/off control for regulator IC [On = H]
79 P0_7 - Not used
80 P0_6 - Not used
81 SDA_EEP I/O I2C bus (data) for EEPROM
82 SCL_EEP O I2C bus (clock) for EEPROM
83 P0_3 - Not used
84 P0_2 - Not used
85 P0_1 - Not used
86 P0_0 - Not used
87 P10_7 - Not used
88 P10_6 - Not used
89 P10_5 - Not used
90 P10_4 - Not used
91 LB_PRO I Low-B protect detection [Error protection = H]
92 P10_2 - Not used
93 KEY2 I Side key scan voltage (MENU CH+/-)
94 AVSS - GND
95 KEY1 I Side key scan voltage (INPUT VOL+/-)
96 VREF I Reference voltage [H fixed]
97 AVCC - +3.3V power supply
98 P9_7 - Not used
99 P9_6 - Not used
100 P9_5 - Not used
Pin No. Pin name I/O Function
1-8 (No.YA589<Rev.001>)
SECTION 3DISASSEMBLY
3.1 CAUTION AT DISASSEMBLY• Make sure that the power cord is disconnected from the outlet.• Pay special attention not to break or damage the parts.• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.• Be sure to reattach the wire clamps removed during the procedure to the original positions. (Attaching the wire clamps in wrong
positions may affect the performance.)
REFERENCE:When removing each board, remove the connector if necessary. The operation is easier if you write down the connection points(connector numbers) of the connector. For connection of each board, refer to the "WIRING DIAGRAM" of the Standard CircuitDiagram.
3.2 DISASSEMBLY PROCEDURE3.2.1 REMOVING THE REAR COVER (Fig.3-1)
(1) Remove the 1 screw [A].(2) Remove the POWER CORD COVER.(3) Remove the POWER CORD.(4) Remove the 1 screw [B], 9 screws [C] and the 5 screws [D].(5) Remove the REAR COVER.
3.2.2 REMOVING THE BACK BRACKET (Fig.3-1)• Remove the REAR COVER.
(1) Remove the 4 screws [E].(2) Remove the BACK BRACKET.
3.2.3 REMOVING THE POWER PWB (Fig.3-1)• Remove the POWER CORD.• Remove the REAR COVER.• Remove the BACK BRACKET.
(1) Remove the 10 screws [F].(2) Remove the POWER PWB.
3.2.4 REMOVING THE SIGNAL PWB (Fig.3-1)• Remove the REAR COVER.• Remove the BACK BRACKET.
(1) Remove the 2 screws [G].(2) Remove the TERMINAL BRACKET.(3) Remove the 8 screws [H].(4) Remove the SIGNAL PWB.
3.2.5 REMOVING THE SW PWB (Fig.3-1)• Remove the REAR COVER.
(1) Remove the 2 screws [J].(2) Remove the SW PWB.
3.2.6 REMOVING THE CONTROL KNOB (Fig.3-1)• Remove the REAR COVER.• Remove the SW PWB.
(1) Remove the 2 screws [K].(2) Remove the CONTROL KNOB.
3.2.7 REMOVING THE LED PWB (Fig.3-1)• Remove the REAR COVER.
(1) Remove the 2 hooks [a].(2) Remove the LED PWB.
3.2.8 REMOVING THE SPEAKER (Fig.3-1)• Remove the REAR COVER.
(1) Remove the 2 screws [L].(2) Remove the SPEKAER.(3) Follow the same steps when removing the other hand
SPEAKER.
3.2.9 REMOVING THE STAND (Fig.3-1)(1) Remove the 4 screws [M].(2) Remove the STAND.
3.2.10 REMOVING THE TELEDOCK (Fig.3-1)• Remove the REAR COVER.• Remove the STAND.
(1) Remove the 4 screws [N], 2 screws [P] and the 4 screws [Q].(2) Remove the BOTTOM FRAME.(3) Remove the 2 screws [R].(4) Remove the TELEDOCK.(5) Remove the 2 screws [S].(6) Remove the DAMPER.(7) Remove the 2 screws [T].(8) Remove the DOCK REAR CASE.(9) Remove the 4 screws [U].
(10) Remove the DOCK PWB.
NOTE:As the TELEDOCK cannot be disassembled/assembled withthe COVER closed, the TELEDOCK may not be removeddepending on the COVER open/close condition. If the COVER is in the condition where the TELEDOCK usuallycannot be removed, give enough force to open the COVER yetnot to break it, and then remove the TELEDOCK.
3.2.11 REMOVING THE LCD PANEL UNIT (Fig.3-1)• Remove the REAR COVER.• Remove the STAND.• Remove the BOTTOM FRAME.
(1) Remove the 4 screw [V] and the 3 screws [W].(2) Remove the MIAN BASE.(3) Remove the 4 screws [X].(4) Remove the LCD SUPPORT BRACKET.(5) Remove the LCD PANEL UNIT from the FRONT PANEL.
(No.YA589<Rev.001>)1-9
Fig.3-1FRONT
FRONT
DD
AA
CC
MM
HHEE
EE
FF
VV
WW
WW
WW
VV
VV
XX UUKK
KK
TT
SS
XX
XX
LL
LL
RR
XX
JJ
GG
PP
PP
NN
BB
DD
CC
REAR COVER
STAND
BOTTOM FRAMESIGNAL PWB
MAIN BASESIDE BRACKET
TERMINAL
BASE
POWER PWB
SW PWB
CONTROL
KNOB
LED PWB
SPEAKER
FRONT PANEL
LCD PANEL UNIT
SPEAKER
DOCK FRONT CASE
DAMPER
DOCK CASE BRACKET
DOCK SHAFT
POWER CORD
POWER CORD COVER
SIDE BRACKET
BACK BRACKET
DOCK REAR CASE
DOCK FRAME
DOCK PWB
FRONT
<TELEDOCK>
1-10 (No.YA589<Rev.001>)
3.3 DISASSEMBLY PROCEDURE (LCD PANEL UNIT)3.3.1 REMOVING THE LCD CONTROL PWB (Fig.3-2)• Remove the REAR COVER.• Remove the MAIN BASE.
(1) Remove the 4 screws [A].(2) Remove the LCD CONTROL PWB COVER.(3) Remove the LCD CONTROL PWB.
3.3.2 REMOVING THE INVERTER PWB (Fig.3-2)• Remove the REAR COVER.
(1) Remove the 6 screws [B].(2) Remove the INVERTER PWB COVER.(3) Remove the INVERTER PWB.(4) Follow the same steps when removing the other
INVERTER PWB.
Fig.3-2
INVERTER PWB COVER
LCD CONTROL PWB COVER
B
A
B
INVERTER PWB (MASTER)
INVERTER PWB (SLAVE)LCD CONTROL PWB
LCD PANEL UNIT
(No.YA589<Rev.001>)1-11
3.4 MEMORY IC REPLACEMENT• This model uses the memory IC.• This memory IC stores data for proper operation of the video and drive circuits.• When replacing, be sure to use an IC containing this (initial value) data.
3.4.1 MEMORY IC TABLE
3.4.2 MEMORY IC REPLACEMENT PROCEDURE1. Power off
Switch off the power and disconnect the power plug.
2. Replace the memory ICBe sure to use a memory IC written with the initial setting data.
3. Power onConnect the power cord to the wall outlet and switch on thepower.
4. Receiving channel settingRefer to the OPERATING INSTRUCTIONS (USER'S GUIDE)and set the receive channels (Channels Preset) as described.
5. User settingsCheck the user setting items according to the "FACTORYSETTING ITEM" table.Where these do not agree, refer to the OPERATINGINSTRUCTIONS (USER'S GUIDE) and set the items asdescribed.
6. SERVICE MODE settingVerify what to set in the SERVICE MODE, and set whatever isnecessary(Fig.1) .Refer to the SERVICE ADJUSTMENT for setting.
3.4.3 SERVICE MODE SETTING ITEMS
Fig.3-4
Simbol Number of pins Mounting PWB Main content of dataIC2001 8-pin SIGNAL PWB Setting data of HDMI-1 is memorized.
IC2004 8-pin SIGNAL PWB Setting data of HDMI-2 is memorized.
IC2007 8-pin SIGNAL PWB Setting data of HDMI-3 is memorized.
IC2503 8-pin SIGNAL PWB Setting value of IC2501(SUB CPU) is memorized.
Setting items Settings Item No.1.White Blance
Fixed
R GainG GainB Gain
R OffsetG OffsetB Offset
2.White Blance Base
Adjust
R GainG GainB Gain
R OffsetG OffsetB Offset
3.M16 EEPROM EDIT Fixed ---
4.I2C Stop Fixed ---
5.Version Fixed ---
Factory Menu
1.White Balance
2.White Balance Base
3.M16 EEPROM EDIT
4.I2C Stop
5.Version
R Gain
G Gain
B Gain
R Offset
G Offset
B Offset
0
0
0
0
0
0
Select the "2.White Balance Base".
SERVICE MODE SCREEN
1-12 (No.YA589<Rev.001>)
3.4.4 SETTINGS OF FACTORY SHIPMENT3.4.4.1 BUTTON OPERATION 3.4.4.2 REMOTE CONTROL DIRECT OPERATION
3.4.4.3 REMOTE CONTROL MENU OPERATION PICTURE ADJUST
Customers can adjust the picture setting of menu screen as their own like but the picture standard value during factory shipment is as below.
<NTSC(ATV, CVBS, S)>
<480i/480p/720p/1080i/1080p (DTV, Component , HDMI)>
Setting item Setting positionPOWER Off
CHANNEL CABLE-01
VOLUME 20
INPUT TV
Setting item Setting positionINPUT TV
CHANNEL CABLE-01
VOLUME 20
MUTING OFF
DISPLAY OFF
ASPECT NTSC,480i/p: Panorama720p,1080i/p: Full
SLEEP OFF
VIDEO STATUS Dynamic
SOUND STATUS Speech
Setting item STANDARD DYNAMIC GAME THEATERTint 46 46 46 48Color 76 80 76 60Picture 50 50 48 48Bright 36 36 36 40Detail 30 45 30 0Backlight 40 100 40 15Color Temp Natural Cool Cool WarmColor Management On On On OffDynamick Gamma On On Off OffSmart picture On Off On OnDigital VNR Low Low Low LowMPEG NR On On On OnNatural Cinema Off Off Off Off
Setting item STANDARD DYNAMIC GAME THEATERTint 46 45 46 48Color 80 82 80 65Picture 46 47 44 46Bright 50 44 50 52Detail 15 20 15 0Backlight 40 100 40 15Color Temp Natural Cool Cool WarmColor Management On On On OffDynamick Gamma On On Off OffSmart picture On Off On OnDigital VNR Low Low Low LowMPEG NR On On On OnNatural Cinema Off Off Off Off
(No.YA589<Rev.001>)1-13
DISPLAY
TV
SOUND
POWER
SETTING
Setting item Setting positionVideo Input Label Default
Photo Viewer Interval :5
Aspect Ratio NTSC,480i/p Panorama
720p,1080i/p Full
Setting item Setting positionClosed Caption Off
CC Setting Analog CC CC1
Digital CC Service1
Font Default
Font Size Default
Font Style Default
Text Color Default
Text Opacity Default
BG Color Default
BG Opacity Default
Edge Color Default
Tuner Mode Cable
Edit Channel Setting Ch Page
V-Chip Do Not Block
Setting item Setting positionMTS Stereo
Digital Audio(ML) English
Surround Off
Sound Status Speech
STEP100Hz 330Hz 1kHz 3.3kHz 10kHz
USER 0 0 0 0 0
SPEECH 0 2 6 6 2
JAZZ 6 0 -2 2 3
CLASSIC 5 3 2 2 3
ROCK 8 3 0 2 4
Setting item Setting positionSleep Timer Off
Power Indicator High
Illumination High
Setting item Setting position
Time Zone Pacific
D.S.T. Off
Language English
Noise Mute On
Front Panel Lock Off
Transparency 3
Auto Shut Off Off
Auto Demo No Setting (Auto Start)
Optical Out PCM
1-14 (No.YA589<Rev.001>)
3.5 REPLACEMENT OF CHIP COMPONENT3.5.1 CAUTIONS
(1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern.(3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it.
3.5.2 SOLDERING IRON(1) Use a high insulation soldering iron with a thin pointed end of it. (2) A 30w soldering iron is recommended for easily removing parts.
3.5.3 REPLACEMENT STEPS 1. How to remove Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with tweezers andalternately melt the solder at each end.
(2) Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
(2) As shown in the figure, push the part with tweezers andalternately melt the solder at each lead. Shift and removethe chip part.
NOTE :After removing the part, remove remaining solder from thepattern.
2. How to install Chip parts
[Resistors, capacitors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on thesolder. Then heat and melt the solder at both ends of thechip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the
solder. (3) First solder lead A as indicated in the figure.
(4) Then solder leads B and C.
SOLDER SOLDER
A
B
C
A
B
C
(No.YA589<Rev.001>)1-15
SECTION 4ADJUSTMENT
4.1 ADJUSTMENT PREPARATION(1) This TV is adjusted by using REMOTE CONTROL UNIT.(2) The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values
which adjust the screen to the optimum condition can be different from the initial setting values.(3) Make sure that connection is correctly made AC to AC power source.(4) Turn on the power of the TV and measuring instruments for warming up for at least 30 minutes before starting adjustments.(5) If the receive or input signal is not specified, use the most appropriate signal for adjustment.(6) Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service
adjustment.
4.2 PRESET SETTING BEFORE ADJUSTMENTSUnless otherwise specified in the adjustment items, preset thefollowing functions with the REMOTE CONTROL UNIT.
4.3 MEASURING INSTRUMENT AND FIXTURES• Signal generator (Pattern generator) [NTSC]• Remote control unit
4.4 SERVICE MODE4.4.1 HOW TO ENTER THE SERVICE MODE
(1) Set to "OFF" using the [SLEEP] key.(2) While "OFF" is displayed, press the [V. STATUS] key and
[DISPLAY] key simultaneously.(3) Enter the SERVICE MODE (Fig.4-1)(4) Select the 2.White balance base from the SERVICE
MODE.
Fig.4-1
4.4.2 HOW TO EXIT THE SERVICE MODEPress the [MENU] key to exit the SERVICE MODE.
4.4.3 SERVICE MODE SELECT KEY LOCATION
4.4.4 CHANGE AND MEMORY OF SETTING VALUE
4.4.5 HOW TO STORE OF SETTING VALUEThe setting value will be stored automatically when release theREMOTE CONTROL UNIT keys.
Setting item SettingsVIDEO STATUS Standard
COLOR TEMP Natural
COLOR MANAGEMENT Off
NATURAL CINEMA Off
ASPECT FULL
Factory Menu
1.White Balance
2.White Balance Base
3.M16 EEPROM EDIT
4.I2C Stop
5.Version
R Gain
G Gain
B Gain
R Offset
G Offset
B Offset
0
0
0
0
0
0
Select the "2.White Balance Base".
SERVICE MODE SCREEN
Remocon Key Contents [ ] / [ ] key Change the setting items up/ down.
[ ] / [ ] key Change the setting values up/down.
[OK] key Select the setting items.
[SLLEP]
[MENU]
[DISPLAY]
[V. STATUS]
[ ]
[ ][ ]
[ ]
1-16 (No.YA589<Rev.001>)
4.4.6 INITIAL SETTING VALUES IN THE SERVICE MODE• Perform fine-tuning based on the "initial values" using the remote control unit when in the SERVICE MODE.• The "initial values" serve only as an indication rough standard and therefore the values with which optimal display can be achieved
may be different from the default values. • Never change the values of the items ( ) that are not described in ADJUSTMENT PROCEDURE or in the below table as they
are fixed values.
4.5 ADJUSTMENT PROCEDURE
Mode Setting item Variable range
Initial setting value
1. White balance[Do not adjust]
R Gain -100 - 100 0
G Gain -100 - 100 0
B Gain -100 - 100 0
R Offset -100 - 100 0
G Offset -100 - 100 0
B Offset -100 - 100 0
2. White balance Base R Gain -100 - 100 0
G Gain -100 - 100 0
B Gain -100 - 100 0
R Offset -100 - 100 0
G Offset -100 - 100 0
B Offset -100 - 100 0
3.M16 EEPROM EDIT[Do not adjust] ---
4.I2C Stop ---
5.Version ---
Item Measuring instrument Adjustment part Description
WHITE BALANCE (HIGHLIGHT)
Remote control unit
Signal generator
[2.White balance Base]R Gain (Red Gain)G Gain (Green Gain)B Gain (Blue Gain)R Offset (Red Offset)G Offset (Green Offset)B Offset (Blue Offset)
(1) Receive a NTSC 75% all white signal.(2) Set "VIDEO STATUS" to "Standard".(3) Set "ASPECT" to "Full".(4) Select "COLOR TEMP" to "Natural".(5) Select the 2.White balance base from the SERVICE
MODE.(6) Set the setting value of <R Offset>(Red Offset), <G
Offset>(Green Offset) and <B Offset>(Blue Offset) to 0.(7) Adjust to keep one of <R Gain>(Red Gain), <G
Gain>(Green Gain) or <B Gain>(Blue Gain) unchanged,then lower the other two so that the all-white screen isequally white throughout.
NOTE:Set one or more of <R Gain>, < G Gain> and <B Gain>to "0".
(8) Check that white balance is properly tracked from low lightto high light. If the white balance tracking is deviated,adjust to correct it.
(No.YA589<Rev.001>)1-17
SECTION 5TROUBLESHOOTING
5.1 SELF CHECK FUNCTIONS5.1.1 OUTLINEThis model has a self check function given below. When an abnormality has been detected, the power is turned off and the POWERLED flashes to inform of the failure. An abnormality is detected by the signal input state of the control line connected to themicrocomputer.
5.1.2 SELF CHECK ITEMS
5.1.3 METHOD OF DISPLAY WHEN A RASTER IS NOT OUTPUTIn the state where a raster is not output by breakdown of the set, an error is displayed by blink of the POWER LED.
<Explanation of operation>If an error is detected, the power is turned off.Shortly after the power is turned off, the POWER LED will be blinked.Power cannot be turned on until the power cord takes out and inserts, after the power is turned off.
Detection item Detection content Diagnosis signal (line) Detection timing
Low bias lineshort protection
Confirm the operation of the low bias (3.3V/5V/12V/24V) protection circuit.3.3V: Q7004 [SIGNAL PWB]5V: Q7003 [SIGNAL PWB]12V: Q7001 [SIGNAL PWB]24V: IC7019 [SIGNAL PWB]
LB_PRO At 10 seconds after the power is turned on, theself-check function starts. If NG is detected during3000ms, the power is turned off automatically.
Type of error POWER LED flash cycleLow bias line short protection LED turning on and off at 2 seconds intervals.
(No.YA589<Rev.001>)
VPTPrinted in Japan
Victor Company of Japan, LimitedDisplay category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan