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1

HAIER

COLOR TELEVISION

SERVICE MANUAL

PART # TV-8888-38

HAIER AMERICA TRADING, LLC www.haieramerica.com

NO:M-AM-US-20R21-76814 Edition: 2002.12.30

HTX20S32 COLOR TELEVISION

Service Manual

MODEL: HTX20S32

�� Features �� MTS Stereo �� Front Audio/Video input �� V-CHIP, CCD

��

1

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CONTENTS

1 Contents--------------------------------------------------------------------1

2 Product Code illumination and Series Introduction--------------------2

3 Features--------------------------------------------------------------------------------3

4 Safety Precautions------------------------------------------------------------------4

5 Warning and Cautions-------------------------------------------------------------5

6 Net dimension----------------------------------------------------------------------11

7 Parts and Functions--------------------------------------------------------------12

8 Remote Controller Functions--------------------------------------------------13

9 Program Diagram------------------------------------------------------------------14

10 Maintenance Service and Trouble shooting------------------------------15

11 Circuit Diagram---------------------------------------------------------------------18

12 Circuit Explanation----------------------------------------------------------------22

13 Adjustment---------------------------------------------------------------------------24

14 Exploded View----------------------------------------------------------------------27

15 List of Parts--------------------------------------------------------------------------28

16 Damageable Parts List-----------------------------------------------------------44

17 Information of Resistors and Capacitors----------------------------------44

CONTENTS

2

2.Product Code illumination and Series Introduction

H T X 20 S32

Haier

Series Name

CRT size (unit: inch)

Color television appearance

Product Code illumination and Series Introduction

FLAT CRT

3

3.Features MODEL HS-2190

MODEL TV-9708 NO. ITEM FUNCTION

NO. ITEM FUNCTION

1 Main IC 76814 24 Digital curtain

2 CRT Flat square 25 Slow fading on & off

3 Color system NTSC 26 Semitransparent menu

4 Audio system M 27 Non-flashing channel changing

5 Number of channels 181 28 ZOOM

6 OSD language E F S 29 16:9 mode

7

PICTURE

Multi-picture modes 30 Games

8 AV stereo 31 Calendar

9 Super woofer 32 Child-lock

10 Surrounding sound 33 Multi-functional lock

11 Treble/bass boost 34 No-picture listening

12 Left/right balancer 35 Background light

13 NICAM 36 Auto-timer on

14 Multi-audio modes 37 CCD

15 Tone adjuster 38

SOFTWARE

V-CHIP

16 MTS/SAP 39 Number of built-in speakers 2

17

AUDIO

Auto-volume leveling 40 Audio output power (W) 3+3

18 AV input Rear 1fornt 1 41 Total power input W 70

19 AV output Rear 1 42 Voltage range V 110~220

20 DVD terminal 43 Power frequency Hz 60

21 S-video jack Rear 1 44 Time of sleep timer (MINS) 120

22 Headphone socket 45 Net weight (KG) 23.5

23

JACK

SCART socket 46 Gross weight (KG) 25

47 Net dimension (MM) 475×450×435

48 Packaged dimension (MM) 550X505X505

49 Quantity for 20' container

50 Quantity for 40' container

51

PARAMETER

Quantity for 40' high container

Features

4

4. Safety Precautions

SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical identify these parts and mechanical parts in this chassis have special safety-related characteristics! In the Schematic Diagram and Replacement Parts List.

It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.

Do not modify the original design without permission of the manufacturer.

General Guidance

An Isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents that might result in personal injury caused by electrical shocks.

It will also protect the receiver and it’s components from being damaged by accidental shorts of the circuitry that might be inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with a specified one.

When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Due to the high vacuum and large surface area of the picture tube, extreme care should be taken in handling the Picture Tube. Do not lift the Picture Tube by its Neck.

X-RAY Radiation

Warning:

The source of X-RAY RADIATION in this TV receiver is the High Voltage Section and the Picture Tube.

For continued X-RAY RADIATION protection, the replacement tube must be of the same type as specified in the Replacement Parts List.

Before returning the receiver to the customer,

Always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc., to make sure that the set is safe to operate without any danger of electrical shock.

Safety Precautions

5

5.Warning and Cautions

CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS.

1. When you clean the TV set, please pull out the power plug from AC outlet. Don't clean the cabinet and the screen with benzene, petrol and other chemicals.

4. To prevent the TV set from firing and electric shock, don'tmake the TV set rain or moisture.

2. In order to prolong the using life of the TV set, please place it on a ventilated place.

5. Don't open the back cover, otherwise it is possible to damage the components in the TV set and harm you.

3. Don't place the TV set in the sunshine or near heat source.

6. When the TV set isn't going to be used for long time or it is in thunder and lightening, please pull out the plug from AC outlet and the antenna plug from the cover of the TV set.

Explanation on the display tube

Generally, it is not needed to clean the tube surface. However, if necessary,its surface can be cleaned with a dry cotton cloth after cutting off the power.Don't use any cleanser. If using hard cloth, the tube surface will be damaged.

Warning and Cautions

6

NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions. Remember: Safety First.

General Servicing Precautions

1). Always unplug the receiver AC power cord from the AC power source before:

a. Removing or reinstalling any component, circuit board module or any other assembly of the receiver.

b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection.

c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.

CAUTION: A wrong substitution part or incorrect installation polarity of electrolytic capacitors may result in an explosion hazard.

d. Discharging the picture tube anode.

2). Test high voltage only by measuring it with an appropriate high voltage meter or other voltage-measuring device (DVM, FETVOM, etc.) equipped with a suitable high voltage probe. Do not test high voltage by “drawing an arc”.

3) .Discharge the picture tube anode only by (a) first connecting one end of an insulated clip lead to the degaussing or kine aquadag grounding system shield at the point where the picture tube socket ground lead is connected, and then (b) touch the other end of the insulated clip lead to the picture tube anode button, using an insulating handle to avoid personal contact with high voltage.

4) .Do not sprays chemicals on or near this receiver or any of its assemblies.

5). Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable nonabrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength)

CAUTION: This is a flammable mixture.

Unless specified otherwise in this service manual, lubrication of contacts is not required.

6). Do not defeat any plug / socket B+ voltage interlocks with which receivers covered by this service manual might be equipped.

7). Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed.

8) Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead.

Always remove the test receiver ground lead last.

9). Use with this receiver only the test fixtures specified in this service manual.

CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver.

Electrostatic ally Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such


7

components are usually called Electrostatic ally Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

1) Immediately before handling any semiconductor component or semiconductor- equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock prior to applying power to the unit under test.

2) After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3) Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4) Use only an anti-static type folder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ES devices.

5) Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6) Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).

7) Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8) Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise even some normally harmless motions such as mutual brushing of your clothes’ fabric or lifting of your foot from a carpeted floor might generate static electricity sufficient to damage an ES device.)

General Soldering Guidelines

1) Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range of 500 oF to 600 oF.

2) Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead.

3) Keep the soldering iron tip clean and well tinned.

4) Thoroughly clean the surfaces to be soldered. Use a mall wire bristle (0.5 inch, or 1.25cm) brush with a metal handle. Do not use freon-propelled spay-on cleaners.

5) Use the following unsoldering technique

a. Allow the soldering iron tip to reach normal temperature. (500 o F to 600o F)

b. Heating the component lead until the solder melts.

c. Quickly draw the melted solder with an anti-static, suction-type solder removal device with solder braid.


8

CAUTION: Work quickly to avoid overheating the circuit board printed foil.

1) Use the following unsoldering technique

a. Allow the soldering iron tip to reach normal temperature. (500 o F to 600o F)

b. First, hold the soldering iron tip and solder the strand against the component lead until the solder melts.

c. Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil.

CAUTION: Work quickly to avoid overheating the circuit board printed foil.

d. Closely inspect the solder area and remove any excess or splashed solder with a small wire-bristle brush.

Remove /Replacement

Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are of slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined.

Removal

Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.

Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.

Replacement

Carefully insert the replacement IC in the circuit board.

Carefully bend each IC lead against the circuit foil pad and solder it.

Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas).

“Small-Signal” Discrete Transistor Removal/Replacement

Remove the defective transistor by clipping its leads as close as possible to the component body.

Bend into a “U” shape the end of each of three leads remaining on the circuit board.

Bend into a “U” shape the replacement transistor leads.

Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the “U” with long nose pliers to insure metal to metal contact then solder each connection.

Power Output, Transistor Device Removal/Replacement

Heat and remove all solder from around the transistor leads.


9

Remove the heat sink mounting screw (if so equipped).

Carefully remove the transistor from the heat sink of the circuit board.

Insert new transistor in the circuit board.

Solder each transistor lead, and clip off excess lead.

Replace heat sink.

Diode Removal/Replacement

Remove defective diode by clipping its leads as close as possible to diode body.

Bend the two remaining leads perpendicularly to the circuit board.

Observing diode polarity, wrap each lead of the new diode round the corresponding lead on the circuit board.

Securely crimp each connection and solder it.

Inspect (on the circuit board copper side) the solder joints of the two “original” leads. If they are not shiny, reheat them and if necessary, apply additional solder.

Fuse and Conventional Resistor Removal/Replacement

1) Clip each fuse or resistor lead at top of the circuit board hollow stake.

2) Securely crimp the leads of replacement component around notch at stake top.

3) Solder the connections

CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures.

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds foil to the circuit board causing the foil to separate from or “lift-off” the board. The following guidelines and procedures should be followed whenever this condition is encountered.

At IC Connections

To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections).

1) Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary).

2) Carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern.

3) Bend a small “U” in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection.

4) Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire.


10

At other connections

Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

1) Remove the defective copper pattern with a sharp knife.

Remove at least 1/4 inch of copper, to insure that a hazardous condition will not exist if the jumper wire opens.

2) Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern.

3) Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side.

Carefully crimp and solder the connections.

CAUTION: Be sure the insulated jumper wire is dressed so that it does not touch components or sharp edges.


11

6.Net dimension

��

Net dimension

12

7.Parts and Functions

Parts and Functions

HTF20R21

13

8.Remote Controller Functions

1. Power Button2. Time & Channel Display Button3. Rating Button TV Program (V-Chip Setup)4. Last Channel Recall Button5. Volume(+/-) Select Button6. Personal Preference Select7. Channel(+/-) Select Button

8. Menu Select Button9. Audio Select Button9. Audio Select Button10.Direct Access Channel Select11. TV/AV Input Button12. Mute Button13. Sleep Timer

17

1 2 3

654

7 8 9

0

MENU RECALL

RATING

CH+

VOL+

CH-

SOUND

P.STD

HaierHYF-25E

R

1

2

3

4

5

6

7

8

9

TV/AV DISP

Remote Controller Functions

14

9. Program Diagram

Insert the power plug into the power line socket and insert the antenna plug into the antenna socket on the rear panel. Press down the power switch of the TV set. The red indicator light goes on.

Program preset

A 1). Auto searching and storing program

Press MENU button on the remote controller to call up the “PREST” menu on the screen. Use the “ ” key to select the bar “auto search” then press the “ ” to make sure. If you want to stop, press the key “ ”.

2). Deleting channel number

Press channel up/down buttons to select a channel to skip. Press MENU to call up the “PREST” menu on the screen. Then Press the” “item to select the bar “Add/Delete” then use the “ ” key to select Add or Delete.

B Volume tuning

Press VOLUME buttons VOL- to decrease and VOL+ to increase the volume.

C Personal preference settings

Picture modes

Press P.STD repeatedly to change among Personal, Standard, Vivid, Soft to change the Picture Mode.

Program Diagram

15

10.Maintenance service and trouble shooting 1). Adjustment item Explanation:

OSD Explanation Range Remark 0 H.PHASE H.PHASE 0~31 1 NT.H.PHASE H.PHASE 0~31 No used 2 H.BLK.LEFT 0~7 3 H.BLK.RIGHT 0~7 4 V.SIZE Vertical Size 0~127 5 V.LINE Vertical Linearity 0~31 6 V.POSI Vertical DC 0~63 7 V.SC Vertical S-Correction 0~31 8 NT.V.SIZE Vertical Size -32~+31 No used 9 NT.V.LINE Vertical Linearity -16~+15 No used 10 NT.V.POSI Vertical DC -32~+31 No used 11 NT.V.SC Vertical S-Correction -16~+15 No used 12 RF.AGC RF AGC Delay 0~63 13 VOL.OUT Volume Control 0~127 14 OSD H.POSI 0~127 15 OSD V.POSI 0~31 16 INPUT LEVEL 0~15 17 SPECTRAL 0~63 (0~31)PHILIP IC 18 WIDEBAND 0~63 (0~31)PHILIP IC 19 STEREO VCO 0~63 No used 20 FILTER SET 0~63 No used 21 SAP VCO 0~63 No used

“ ”

γγ

“ ”“ ”

. Maintenance service and trouble shooting

16

Brt.Abl.Def (0/1)

Mid.Stp.Def (0/1)

— R-Y/B-Y Gain Balance (0~15) No use (LA76814)

R-Y/B-Y Angle (0~15)

C_Kill OFF (0/1)

Sound Trap (0~7)

Volume Filter Defeat

Video IF setting (0 45.75M 1 58.75M) For LA76814

Video Level (0~7)

FM Level (0~31)

0 turn TV on twice 1 memory 2 3Turn TV on first

0 without AV 1 one AV input 2 two AV input 3 Three AV input

No used No usedNo used No usedNo used No used

’

NOTHING NOTHING

.Maintenance service and trouble shooting

17

Check to see if Fuse3 is normal

No lig

Abnormal

Check VD501, C507, V513, etc.

Check to see if the collector voltage of V552

is 0V

Check N101 ect

Check to see if , 12v,

5v is normal

Check the control voltage of V552 or

CPU power

The failure of horizontal unit or

N551 N552

Normal

Normal

Normal Abnormal

Check to see 110V 180V etc. voltage is normal

Test to see all terminal Resistance of load

Is normal

Check power unit

Check to see if rectifying tube

is normal

Change rectifying tube

Check the Loader

Abnormal

Normal

Abnormal

Normal Abnormal

Normal Abnormal

Maintenance Service and Trouble shooting

18

11. Circuit Diagram

Circuit Diagram


Circuit Diagram

K6D

B1-ADJ

HV

FOCUS

SCREEN

ABL

H-PULSE

FO

5

4

3

2

1

13

14

12

11

8

9

10

2

CRT BOARD

10

9

7

6

5

4

3

18

PCC H-W

CY

Lout

Vout

LIVE AREAAC220V50HZ

1 2

34

Rout

V1in

L1in

R1in

V2in

L2in

R2in

SDA

SCL

AUDIO

Rout

Lout

Rin

Rout

Lin

Lout

XS603

XS604

OMIT-SS--112LM

OMIT-SS--112LM

1

611

8

2

10

2

7 1

4

4

2

1

1

1

3

5

9

3

3

C5512KV470

C5541KV470

V5542SB892(S)

V5532SC1815

RP551B-2K

C56535V2200

+

C561160V220

+

C56425V2200

+

B612V

R5534. 7K

R554150K

R5551/ 2DJ47K

R55622K

R5512SJ22K

R5521/ 2DJ100K

R569275/ 1A

XS401

SCN-4Y

TP-GTEST

TP- HTEST

XS402TJC2-6A-4T

XP402TJC2-5Y

B1110V

R4911FJ3. 3

C432500KK1000

W902 JG 0034

C93116V10

+

R902100

R912100

R922100

R924330

C921CJ390

C911

CJ220

C901CJ390

C9392KV1000

R9181/ 2SJ2. 7K

R9281/ 2SJ2. 7K

R904330

C903CJ56R

R914330

C913CJ56R

C923CJ56R

R9311K

U901XXXXXXX

R9081/ 2SJ2. 7K

R900DJ10K

V9022SC2688

V9122SC2688

V9222SC2688

C93216V10

+

R906560

R916680

R93215K

R9331. 5K

R9072SJ10K

R9172SJ10K

R9272SJ10K

R926680

R94033

K9NTJC2-2A

XP901SCN-4Y

XP902SCN-5Y

B224V

B1110V

B312V

B75V

B1110V

B312V

B55V

B55V

B312V

SW701CH+

SW702CH-

SW705MENU

SW706AV/ TV

SW703V+

SW704V-

C70116V47

+

L70139UH

C7020. 01

C7030. 01

C70415P

C70518P G 701

32K

R709390K

C70850V4. 7

+

R7182SJ10K

R72010K

R70810K

R700150K

R70127K

R7028. 2K

R7034. 7K

R7043. 9K

R7052. 7K

R7061. 5K

R73110K

R73410K

R729150K

R73247K

R73010K

C71350V1

+

R725330

C71450V2. 2

+

R726270K

R7364. 7K

R7384. 7K

R7404. 7K

R7423. 3K

R7433. 3K

C71916V47

+ C7200. 01

R744220

R745220

R74722K

R74922K

R75122K

R75322K

R75410K

R75522K

R766100

R75722K

R75822K

R75922K

R7602. 2K

R76122K

R76222K

R76322K

R76422K

R76522K

A701HS- 0038

C1100. 01

R1085. 6K

R1091K

R110220

R107100

V1022SC2216

C1120. 01

R11182

C1110. 01

L10215UH

C11516V100

+

C1160. 01

C11750V1

+

R113100K

R114100K

C1180. 01

C1190. 01

C120FK0. 022

C1231000

R1211K

T101HA6019

R2011K

R2021. 2K

R204560K

C20316V4. 7

+

C20450V1

+

C2050. 01

C20616V47

+

C20963V15P

G 201S3. 58

C2740. 01

C27616V10

+

R2731/ 4DJ4. 7K

R4082. 2K

R432J R433

1/ 2SJ1K

C433500KK3900

C441200FK0. 39

B425V

L45118UH

VD451EM 01Z

C45135V100 +

C45235V2200

+

R4513. 3K C453

1000

C45450V1

+

C459100FK0. 1

R4521

R45312K

R4543K

R45512K

R45612K

R45739K

C45650V4. 7

+

R4581K

C45735V2200

+

R4601/ 2DJ180 C458

100FK0. 1

R461A1/ 2DJ120

R4591SJ1

C40150V0. 47

+R4012. 2K

C40416V220

+ C4050. 01

C406FK0. 068

C40750V2. 2

+

R4021K

R403330K

R404680

R241100

R242100

R243270

C24416V47

+ C2450. 01

R2321/ 2DJ1. 5K

R23310K

C23150NP1

C6070. 01

C60635V1000

+

XS602TJC3-2A

XP602TJC3-2Y

B90110W8O HM

B90210W8O HM

XS403SCN- 5

C7290. 01

R4001/ 4DJ270

N451LA7840

GND

1

OUTPUT

2

VCC13

NON INPUT

4

INPUT5

VCC26

PUMP O

UT7

R7238. 2K

R7244. 7K

R7221. 5K

R75622K

C403FK0. 47

SW707AUTO

R707680

R72110K

R728470

R1191K

N702CAT24C08P

VCC8

GND7

SCL6

SDA5

1

2

3

4

R74622K

R74822K

R73510K

R770100

B55V

C45016V100

+

R409680

R727470

VD1001TRL- R

V7022SA1015

VD901I N4148

VD911I N4148

VD9211N4148

C45563V10

C61116V10

+ C62116V10

+

C772KK470

R77312K

R77510K

R7798. 2K C734

16V/ 10+

R780560

R63210K

C61850V2. 2

+

V6332SC1815 V631

2SA1015

R63110K

VD6311N4148

R63010K

VD6201N4148

C62850V2. 2

+

V6322SC1815

R77210K

C62525V470

+

C61525V/ 470

+

C61216V100

+ VD6111N4148

VD6121N4148

C61316V100

+

VD6211N4148

C62216V100

+

C62316V100

+VD6221N4148

B612V

B612V

R774100

R7778. 2K

C73316V/ 10

+

R778560

C771KK470R776

12K

C6270. 01

C6170. 01

C63116V/ 100

+

R6111. 5K

R6211. 5K

L90110UH

R2723K

C2790. 01

R12039K

R2442. 7K

R2744. 7K

R2753K

C207FK0. 01 C208

50V0. 47

+R20647K

R20522K

R2072M

C21016V0. 47

+

C140470

C13950V0. 47

+

R127220

C13750V0. 47

+

C13650V1

+

A101

ENV56DB4G 3

IF

33V

5V

SDA

NC

SCL

AGC

5V

C10350V2. 2

+

R1031K

R102100K

R10133KB7

5V

C10116V100

+ C1020. 01

L433ZZ0003

L432YC0008

V4322SD1651

C434160V10

+B1

R4347W3. 3K

L431YC0008

C474250V22

+VD474EU1

R4741FJ1

T471JF0501-92807

R4721FJ1

VD472EU1

C47235V100

+

B425V

R5671. 2K

C57010V470

+

B55V

XS901GZS10-2-108

R4716FJ3. 9

B612V

RL552

VD5521N4148

V8212SC1815

R8224. 7K

R8211K

C82150V1

+

V8012SC1815

R80127K

R803220

C80516V470

+

R80268KR804

100K

B312V

B75V

C80316V470

+

C819220

R41310K

R41410K

C41250V1

+ R4153. 9K

R4128. 2K

VD411EU1

C41125V47

+

C303FK0. 1

C304FK0. 1

R302100K R303

270K

R30410K

R3051K

R30639K

V3012SC1815

RP301B-50K

RP302B-10K

V303D2012

L301AA36

C30635V470

+

R3072. 2K

R3102. 7k

V3022SA1015

C3151000

R3131SJ5. 1

R312DJ5. 6K

R3112. 7K

R30847k

R30956K

C30525V2. 2

R3141/ 2SJ560

R3018. 2K

C30135V47

+

C30235V1000

+

B425V

VD435ERD07-15L

C4351. 6KV8200

C437400NJ0. 033

R4411/ 2SD1K

L441AC41B

C444160V4. 7

+

R4461/ 4W220K

N801

TC4053BP

OX

12

1X13

X COM

14

Y COM

15

VDD16

1Y1

0Y2

1Z3

Z COM

4

OZ

5

INH6

VEE7

VSS8

C9

B10

A11

XS802

VHS

R10104. 7K

R80882

C80616V10 +

R100947K

C81016V10

+

R8264. 7K

C80916V10 +

R8144. 7K

XS801- 1AV2

XS803AV1

B75V

C80116V220

+C8020. 01

W801X

R81882

C81116V10

+

R82582

C8120. 01

B75V

VD8011N4148

R82427K

R8191K

R8238. 2K

R8154. 7K

R8203. 3K

C8040. 01

C515400V0. 022

C501250HM 0. 1

C502250HM 0. 1

L909LJ0107CHA

C5031000KM1000E

C5051000KM1000E

C5041000KM1000E

C5061000KM1000E

C532400KM470S

C533400KM2200S

VD503RM 11C

VD505

RM 11C

C507

400V330

+VD504RM 11C R515

2SJ68K

R5016WDJ220K

N501HPC922

L501JLB1606

L502LJB1606

R5131M

R5141M

FU501T2. 5A250V

U902EW0130KB

R5026WK3. 9

XS501TJC2-2A

V513F6654

12345

R5032SJ68K

C50935V100+

VD512EG 01C

C5162KV220

R5123. 3K

C5140. 01

VD5131N4148

VD5071N4148

L504YC0008

C510FJ470

VD5081N4148

C511FJ1000

R5071. 5K

R5081. 5K

V5012SA1015

VD509HZ15C

R5091K

C512FJ470

VD510EU2

R5118. 2

VD511EU2

R5042SJ0. 1

R51010K

R506FJ680

C5132KV330

L506YC0008

L505YC0008

VD555RU4YX

VD551RU3A

VD554RG P15D

VD4521Z75

T511BCK-130-01

N552L7805CV1 2 3

B7

5VC57210V470

+

C12639

L12115UH

C12518

R122330

C12450V1

+

R104100

R105100

R2681K

V8022SC1815

R83168K

R8331K

C82316V47

+

R83222K

R83482

B312V

R83568KR838

82

R83622K

B312V

R8371K

C82516V47

+

XS801- 2AVout

C0650V4. 7

+C0750V4. 7

+

R02RJ8. 2K

C1650V4. 7

+

C0815nF

R20100

C1050V10

+

R03RJ160

C15100nF

C09

50V10

+

C0150V10

+

R6103K

R6203K

C81316V10

+

B612V

B612V

B612V

R21100

C1450V10+

R800

680

C1347nF

C1916V100

+

C02470nF

C04220nF

C0350V4. 7

+

C0550V10+

CR50V2. 2

+C21

50V10

+C18

16V100

+CL

50V2. 2

+C17

100nF

C2050V10

+C1250V1

+C1150V1

+

B503F58Q01

N641

TDA9850VEI2

Cnr3

Cm4

Cdec5

AGND

6

DGND

7

SDA8

SCL9

Vcc10

COM

P11

Vcap12

Cp113

Cp214

Cph15

Cadj16

CER17

Cmo

18

Css19

Cr20

OUTR

21

Csde22

SAP23

Vref24

Cl25

Cnd26

OUTL

27

MAD

28

Ctw29

Cts30

Cw31

VEO1

Cs32

R012. 2K

C82416V100 +

R6241/ 2W39

T431BCT-10

B218V

XP601TJC3-2Y

XS601TJC3-2A

R270560K

C730470P

C60116V10

+ C60216V10

+C40250V0. 22

+

C21250V1

+

N701LC863232A- 5V57

LNA1

50/ 602

ALARM3

W- VO L4

VO L- L5

VO L- R6

PO WER7

NC8

G ND9

XTAL110

XTAL211

VDD12

KEY I N13

AFT I N14

NC15

NC16

RESET17

FI LT18

CVBS- I N19

V SYNC20

H SYNC21

R O UT22

G OUT23

B OUT24

BLANK25

NC26

SDA027

SCL028

SDA129

SCL130

SAFTY31

S-VHS32

NC33

I R34

SRS O N/ OFF35

WO O FER O N/ O FF36

M UTE37

AV238

AV139

AV/ TV40

V-MUTE41

COM B-FI LTER42

Z101LBN45U

38M

VD412HZ7C1

N101LA76814K

AUDI O OUT1

FM OUT2

PI F AG C3

RF AG C4

VI F I N15

VI F I N26

G ND(I F)7

VCC ( VI F)8

FM FI L9

AFT OUT10

DATA11

CLOCK12

ABL13

R I N14

G I N15

B I N16

BLANK I N17

VCC (RGB)18

R OUT19

G OUT20

B OUT21

AKB I N22

V OUT23

RAM P ALC. FI L24

VCC (H)25

H AFC FI L26

H OUT27

FBP I N28

VCO I REF29

CLO CK OUT30

VCC ( CCD)31

O SD CO NTRAST32

GND (CCD/ H)33

X-RAY34

KI LLER FLT35

APC1 FI L36

FSC O UT37

XTAL38

ACC FI L39

SEL VI DEO O UT40

GND (V/ C/ B)41

EXT VI DEO I N42

VCC (V/ C/ D)43

I NT VI DEO I N44

BLK STRETCH FI L45

VI DEO OUT46

APC FI L47

VCO COI L48

VCO COI L49

VCO FI L50

EXT AUDI O I N51

SI F OUT52

SI F APC FI L53

SI F I N54

C80716V10

+ C80816V10

+

W8041/ 4W15K

C62650V1

+

R625100

C61650V1

+

R615100

V8042SC1815

VD7041N4148

W40810K

VD506

RM 11C

RT501PTH451A7R0Q21

000

RL551

00 0

C4080. 022VD401

I N4148

R9331M

C935250V22

+

V7052SC1815

N705UPC574

V9312SA1015

V7042SC1815

VD436EU2A

VD402I N4148

VD561HZ6C3

N553L7805CV

123

N551L7812CV123

R56610K

R5071. 5K

R562275/ 2A

V5912SC1015

R5911. 2K VD592

1N4148

10KR561

V5522SC1815

R55722K

V555

2SA1015

V4312SC2383-O

VD703HZ4A2

VD5531N4148

N602 LA4287

INT1

GND

2

EXT3

SW4

VOL

5

FLI6

NFB7

GND

8

OUT

9

VCC10

N601 LA4287

INT1

GND

2

EXT3

SW4

VOL

5

FLI6

NFB7

GND

8

OUT

9

VCC10

V8032SC1815

VD900RU3Z

V703

2SC1815

VD3011N4148

10KR596

V5532SC1815

R55722K

VD509HZ15C

68KR593

R59368K

C59150V0. 47

+

C4382KV470

R5451/ 2CK5. 6M

1

611

8

2

10

2

7 1

4

4

2

1

1

1

3

5

9

3

3


Circuit Block Diagram

��

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Picture/Sound IF Amplifier, Video and audio signal

Processing, RGB Output Circuits and H &V Sync pulse

segregation

SAW

Sound Power Amplifier

Main Processor

Infrared Receiver Remote Controller

ROM

Audio/Video In/Out

Horizontal Scan Output

Vertical Scan Output

CRT

Antenna

Tuner

I2C BUS


21


22

12. Circuit Explanation

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Circuit Explanation

23

2). N101 LA76814K

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Circuit Explanation

24

13. Adjustment

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f. User Remote controller g.

j. 60MHz double trace oscillograph(2 units) k. White balance adjustment instrument

±

Alignment and check:

±

Adjustment: Receive stereo signal (recommended audio: L 300Hz, R: 3KHz). Connect two inputs of double trace oscillograph into XS601, XS602 (note: don’t make XS601, XS602 outputs short.) Press FACTORY button on the service remote controller, enter “ADJUST” service mode. Press “CH+” or “CH-” select “WIDEBAND” item and adjust low frequency separation. (see figure 1) and make it

Adjustment

25

optimal see figure

2 .At last press “CH+” or “CH-” and select “SPECTRAL” item, adjust high frequency separation. (see figure 3) and make it optimal see figure 4 .If effect isn’t good, you can repeat above steps till it is optimal.

Adjustment: Connect voltage meter to +B on main PCB, make +B voltage be 115V±0.3V.

“ ” ”“ ”

“ ”“ ”

AGC ALIGNMENT: Receive a color bar signal, 60dB,NTSC M color bar pattern, and check if there is noise in the picture, if there is noise, press FACTORY button and enter service mode, adjust RF.AGC value and make the noise just disappear, press FACTORY button and exit service mode.

White balance adjustment: Turn TV on, receive white field signal, and make the probe of white balance adjustment instrument touch with top and bottom of screen fully. Check if values of R, G, B are standard, if not, press “FACTORY” button, make “B/W BALANCE” menu display on screen, adjust values of R-BIA, G-BIA, B-IA, R-DRV, G-DRV, B-DRV, make them standard. Press FACTORY button, exit service mode. OSD I2C bus control (LA76810) Varied range S-BRI Sub brightness 0-127 R-BIA Red bias 0-255 G-BIA Green bias 0-255 B-BIA Blue bias 0-255 R-DRV Red drive 0-127 G-DRV Green drive 0-15 B-DRV Blue drive 0-127 C.B/W Cross B/W 0-3

FOCUS ALIGNMENT Receive crosshatch (N system) pattern; Adjust focus-variable resistor on the FBT, make picture is the sharpest.

Adjustment

26

GEOMETRIC ALIGNMENT: Receive the monochrome circle pattern (NTSC system); Check vertical center and horizontal center and H-linearity .if they are not standard, press FACTORY button to enter service mode, and adjust vertical size, vertical linearity, vertical center, horizontal center, make them standard.

Alignment parameter table: Press FACTORY button on service remote controller and enter service mode: 1.Adjustment mode and2. Setting mode;

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Adjustment

44

16. Damageable Parts List Location Material Code Parts Name Type Qt. (unit) Remark XS901 0094300290 Connect housing GZS10-2-AC2-DGV 1 G01 0094600119 Oscillator CSB503F58 1 N641 0094400796 IC TDA9850 1 V301 0094101006 Transistor 2SC1815(Y)------F 15 V432 0094400465 Transistor 2SD1651----B-A 1 V513 0094401093 IC STR-F6654 1 N801 0094400417 IC TC4053BP 1 V V601 0094400527 IC LA4287 2 RT501 0094400452 Resister PTH451A7R0Q21 1 N101 0094400457 IC LA76814K 1 V XS801 0094300172 Connect housing AV6-8.4-14A 1 N451 0094400470 IC LA7840 1 V N702 0094400636 IC CAT24C08P 1 V XS802 0094300173 S-Video terminal SZ4-9-2K 1 N701 0094401090 IC LC863232A-5V57 1 V

17. Information of Resistors and Capacitors

!"! #$�%&� !"! #$�%&� !"! #$�%&� !"! #$�%&� ��RESISTORS & CAPACITORS-PARTS NO.CODE Notes: 1.part numbers are indicated on most mechanical parts.

Please use this part number for parts orders. 2.The unit of resistance is (ohm).K=1000 ,M=1000K 3.The unit of capacitance is F(microfarad). 1pF=10-6 F.

Numbering system of Capacitor

Example CL42 ----- 17 ---- 50V ---- 2F4 ---- 104 * ---- Z Type Voltage Value (pF) Tolerance CL21X ---- 100V ---- 223 * ---- J Type Voltage Value (pF) Tolerance CL110X ---- 25V ---- 100 F 20%

Type Voltage Value Tolerance * 104 =10 104 223=22 103

Numbering system of resistor

Example RY17S ---- 2W ---- 390 ---- J ---- 05-E-A Type Wattage Value( ) Tolerance RS11 ---- 1/2W ---- 1.8K ---- K Type Wattage Value Tolerance

Damageable Parts List

45

ABBREVIATION OF PART NAME AND DESCRIPTION

RESISTOR

CAPACITOR

Terminal view of transistors

��

PART NAME & DESCRIPTION TYPE ALLOWANCE

C Ceramic J 5% T Ceramic K 10% L Film L 15% D Electrolytic M 20% A Tantalum P +100%-0% Z +80%-0%

PART NAME & DESCRIPTION TYPE ALLOWANCE

T Carbon F 1% S Solid J 5% J Metal K 10% Y Oxide M 20% F Fuse G 2%

E C B

B CE

KSC2331-YTA

BCE

KSR1010TAKSR2010TA

BC548-CTA

E BC

C BE

KSC815-YTAKSA539-YTA

E C B

2SD18887YD

color television service manual - …rtellason.com/manuals/tv-8888-38.pdfcolor television service...

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