Haier HTX20S32 Service Manual
Haier HTX20S32 Service Manual

Haier HTX20S32 Service Manual

Haier htx20s32 color television service manual
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HTX20S32
COLOR TELEVISION

Service Manual

MODEL: HTX20S32
Features
MTS Stereo
Front Audio/Video input
V-CHIP, CCD
NO:M-AM-US-20R21-76814
Edition: 2002.12.30

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Table of Contents
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Summary of Contents for Haier HTX20S32

  • Page 1: Service Manual

    HTX20S32 COLOR TELEVISION Service Manual MODEL: HTX20S32 Features MTS Stereo Front Audio/Video input V-CHIP, CCD NO:M-AM-US-20R21-76814 Edition: 2002.12.30...
  • Page 2: Table Of Contents

    CONTENTS CONTENTS Contents--------------------------------------------------------------------1 Product Code illumination and Series Introduction--------------------2 Features--------------------------------------------------------------------------------3 Safety Precautions------------------------------------------------------------------4 Warning and Cautions-------------------------------------------------------------5 Net dimension----------------------------------------------------------------------11 Parts and Functions--------------------------------------------------------------12 Remote Controller Functions--------------------------------------------------13 Program Diagram------------------------------------------------------------------14 Maintenance Service and Trouble shooting------------------------------15 Circuit Diagram---------------------------------------------------------------------18 Circuit Explanation----------------------------------------------------------------22 Adjustment---------------------------------------------------------------------------24 Exploded View----------------------------------------------------------------------27 List of Parts--------------------------------------------------------------------------28 Damageable Parts List-----------------------------------------------------------44 Information of Resistors and Capacitors----------------------------------44...
  • Page 3: Product Code Illumination And Series Introduction

    Product Code illumination and Series Introduction Product Code illumination and Series Introduction 20 S32 Color television appearance CRT size (unit: inch) FLAT CRT Series Name Haier...
  • Page 4: Features

    Features Features MODEL MODEL HS-2190 TV-9708 FUNCTION FUNCTION ITEM ITEM PICTURE SOFTWARE Main IC 76814 Digital curtain Flat square Slow fading on & off NTSC Color system Semitransparent menu Audio system Non-flashing channel changing Number of channels ZOOM E ˆF ˆS ˆ OSD language 16:9 mode Multi-picture modes...
  • Page 5: Safety Precautions

    Safety Precautions 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.
  • Page 6: Warning And Cautions

    Warning and Cautions Warning and Cautions 1. When you clean the TV set, please pull 4. To prevent the TV set from firing and out the power plug from AC outlet. Don't electric shock, don't clean the cabinet and the screen with make the TV set rain benzene, petrol and other chemicals.
  • Page 7 Warning and Cautions 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.
  • Page 8 Warning and Cautions 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.
  • Page 9 Warning and Cautions 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 F to 600 b. First, hold the soldering iron tip and solder the strand against the component lead until the solder melts.
  • Page 10 Warning and Cautions 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.
  • Page 11 Warning and Cautions 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.
  • Page 12: Net Dimension

    Net dimension 6.Net dimension...
  • Page 13: Parts And Functions

    Parts and Functions 7.Parts and Functions HTF20R21...
  • Page 14: Remote Controller Functions

    8.Remote Controller Functions DISP TV/AV SOUND RA TING MENU RECALL VOL+ P.STD Haier HYF-25E 1. Power Button 8. Menu Select Button 2. Time & Channel Display Button 9. Audio Select Button 3. Rating Button 9. Audio Select Button TV Program (V-Chip Setup) 10.Direct Access Channel Select...
  • Page 15: Program Diagram

    Program Diagram 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 ˚...
  • Page 16: Maintenance Service And Trouble Shooting

    Maintenance service and trouble shooting Maintenance service and trouble shooting 1). Adjustment item Explanation: Explanation Range Remark H.PHASE H.PHASE 0~31 NT.H.PHASE H.PHASE 0~31 No used H.BLK.LEFT H.BLK.RIGHT V.SIZE Vertical Size 0~127 V.LINE Vertical Linearity 0~31 V.POSI Vertical DC 0~63 V.SC Vertical S-Correction 0~31 NT.V.SIZE...
  • Page 17 Maintenance service and trouble shooting 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)
  • Page 18 Maintenance Service and Trouble shooting No lig Check to see if Fuse3 is normal Abnormal Normal Check VD501, C507, Check to see 110V ˆ180V V513, etc. etc. voltage is normal Normal Abnormal Check to see if the Test to see all terminal collector voltage of V552 Resistance of load is 0V...
  • Page 19: Circuit Diagram

    Circuit Diagram 11. Circuit Diagram...
  • Page 20 Circuit Diagram XS 803 X S 801- 1 X S 801- 2 A V2 XS 802 A V1 AV out R 825 R 624 1/ 2W39 C 806 CRT BOARD 16V 10 R1010 W801 R1009 R 826 C 03 C 04 4.
  • Page 21: Circuit Block Diagram

    Circuit Block Diagram Circuit Block Diagram Antenna Sound Power Amplifier Picture/Sound IF Amplifier, Tune Video and audio signal Processing, RGB Output Circuits and H &V Sync pulse Horizontal Scan segregation Output C BUS Vertical Scan Output Main Processor Audio/Video In/Out Infrared Receiver Remote Controller NO:M-AM-US-20R21-76814...
  • Page 22 Circuit Block Diagram...
  • Page 23: Circuit Explanation

    Circuit Explanation 12. Circuit Explanation , & U H I H U H Q F H G D W D , & U H I H U H Q F H G D W D , & U H I H U H Q F H G D W D , &...
  • Page 24 Circuit Explanation N101 LA76814K Ä Å Ä Å , & # - , " # - ,1 2) 3 # - ,1 & & " 5 / ,- - 67 %108 & " 5 / , & & & 5 / & :;...
  • Page 25: Adjustment

    Adjustment 13. Adjustment D O L J Q P H Q W D O L J Q P H Q W D O L J Q P H Q W D O L J Q P H Q W f. User Remote controller g.
  • Page 26: White Balance Adjustment

    Adjustment 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.
  • Page 27 Adjustment 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.
  • Page 28: Exploded View

    Exploded View 14. Exploded View HTF20R21 EXPLOSION BOM Parts Name Material Code Type Q’ty Remark Front Frame 0090201437 MTAA5049AC--Q Speaker crash pad 0090300099 613 Speaker Speaker 0094000018 YDT613-4W-16 ¡ Rivet 0090100132 MTBS0004BB--Q Washer Rubber 0090300095 Inner Diameter 4.8 Screw 0090600023 SJ2824-87 ST4*16F Washer 0090100128...
  • Page 29: List Of Parts

    List of Parts 15. List of Parts Location Material code Parts name Type Qt. (Unit) Remark 0090100128 Washer 1MM 6.5 0090300211 Rubber washer 1MM 8.5 0090202438 Label MTFE5063CA--Q 0090201866 Label MTFE5043CF--Q 0090800171 Degaussing coil tie BJZ0001-----Q 0090300078 Crash pad 30X30X25 0090200453 Clamp TMMOA101 0090501291 Plastic bag...
  • Page 30 List of Parts Location Material code Parts name Type Qt. (Unit) Remark W1001 0090400787 Wire JT4361-C0145Q W1002 0090400788 Wire JT5391-C0146Q XS901 0094300290 Connect housing GZS10-2-AC2-DG 0094001381 Main PCB assembly BXC5005-----Q XP1001 0090400812 Wire JT4351-70153Q SW1008 0094300202 Audio/video terminal AV3-8.4-6AK R1009 0094100793 Resister RT13-1/6W-2.4K ±5%------T R1010...
  • Page 31 List of Parts Location Material code Parts name Type Qt. (Unit)Remark C702 0094201040 Capacitor CT1-08-2F4-63V-0.01 F-Z------F C703 0094201040 Capacitor CT1-08-2F4-63V-0.01 F-Z------F C720 0094201040 Capacitor CT1-08-2F4-63V-0.01 F-Z------F C802 0094201040 Capacitor CT1-08-2F4-63V-0.01 F-Z------F C804 0094201040 Capacitor CT1-08-2F4-63V-0.01 F-Z------F C812 0094201040 Capacitor CT1-08-2F4-63V-0.01 F-Z------F C432 0094201237 Capacitor CT1-10-2B4-500V-1000PF-K------F...
  • Page 32 List of Parts Location Material code Parts name Type Qt. (Unit) Remark C509 0094200991 Capacitor CD110-35V-100 F-M------F C301 0094200990 Capacitor CD110-35V-47 F-M------F C117 0094200043 Capacitor CD110-50V-1 F-M------F C124 0094200043 Capacitor CD110-50V-1 F-M------F C204 0094200043 Capacitor CD110-50V-1 F-M------F C212 0094200043 Capacitor CD110-50V-1 F-M------F C412 0094200043 Capacitor...
  • Page 33 List of Parts Location Material code Parts name Type Qt. (Unit) Remark VD503 0094400453 Diode RM11C------T VD504 0094400453 Diode RM11C------T VD505 0094400453 Diode RM11C------T VD506 0094400453 Diode RM11C------T VD510 0094400769 Diode EU2------T VD511 0094400769 Diode EU2------T VD703 0094400290 Diode HZ4A2------T VD561 0094400291 Diode HZ6C3------T...
  • Page 34 List of Parts Location Material code Parts name Type Qt. (Unit) Remark R242 0094100017 Resister RT13-1/6W-100 ±5%------T R615 0094100804 Resister RT13-1/6W-2.2 -J------T R625 0094100804 Resister RT13-1/6W-2.2 -J------T R766 0094100017 Resister RT13-1/6W-100 ±5%------T R770 0094100017 Resister RT13-1/6W-100 ±5%------T R774 0094100017 Resister RT13-1/6W-100 ±5%------T R110 0094100019 Resister...
  • Page 35 List of Parts Location Material code Parts name Type Qt. (Unit) Remark R311 0094100027 Resister RT13-1/6W-2.7K ±5%------T R705 0094100027 Resister RT13-1/6W-2.7K ±5%------T R272 0094100799 Resister RT13-1/6W-3K ±5%------T R275 0094100799 Resister RT13-1/6W-3K ±5%------T R454 0094100799 Resister RT13-1/6W-3K ±5%------T R742 0094100028 Resister RT13-1/6W-3.3K ±5%------T R743 0094100028 Resister...
  • Page 36 List of Parts Location Material code Parts name Type Qt. (Unit) Remark R721 0094100033 Resister RT13-1/6W-10K ±5%------T R730 0094100033 Resister RT13-1/6W-10K ±5%------T R731 0094100033 Resister RT13-1/6W-10K ±5%------T W408 0094100033 Resister RT13-1/6W-10K ±5%------T R734 0094100033 Resister RT13-1/6W-10K ±5%------T R735 0094100033 Resister RT13-1/6W-10K ±5%------T R754 0094100033 Resister...
  • Page 37 List of Parts Location Material code Parts name Type Qt. (Unit) Remark R113 0094100077 Resister RT13-1/6W-100K ±5%------T R114 0094100077 Resister RT13-1/6W-100K ±5%------T R102 0094100077 Resister RT13-1/6W-100K ±5%------T R302 0094100077 Resister RT13-1/6W-100K ±5%------T R804 0094100077 Resister RT13-1/6W-100K ±5%------T R554 0094100734 Resister RT13-1/6W-150K ±5%------T R729 0094100734 Resister...
  • Page 38 List of Parts Location Material code Parts name Type Qt. (Unit) Remark W410 0094101103 Jumper 0.6mm/7.5mm------B W411 0094101103 Jumper 0.6mm/7.5mm------B W416 0094101103 Jumper 0.6mm/7.5mm------B W417 0094101103 Jumper 0.6mm/7.5mm------B W423 0094101103 Jumper 0.6mm/7.5mm------B W424 0094101103 Jumper 0.6mm/7.5mm------B W451 0094101103 Jumper 0.6mm/7.5mm------B W500 0094101103 Jumper 0.6mm/7.5mm------B...
  • Page 39 List of Parts Location Material code Parts name Type Qt. (Unit) Remark W302 0094101103 Jumper 0.6mm/7.5mm------B W810 0094101103 Jumper 0.6mm/7.5mm------B W838 0094101103 Jumper 0.6mm/7.5mm------B W834 0094101103 Jumper 0.6mm/7.5mm------B W419 0094101103 Jumper 0.6mm/7.5mm------B W109 0094101104 Jumper 0.6mm/10mm------B W571 0094101104 Jumper 0.6mm/10mm------B R610 0094101104 Jumper 0.6mm/10mm------B...
  • Page 40 List of Parts Location Material code Parts name Type Qt. (Unit) Remark W725 0094101104 Jumper 0.6mm/10mm------B W726 0094101104 Jumper 0.6mm/10mm------B W727 0094101104 Jumper 0.6mm/10mm------B W739 0094101104 Jumper 0.6mm/10mm------B W503 0094101104 Jumper 0.6mm/10mm------B W711 0094101105 Jumper 0.6mm/12.5mm------B W805 0094101105 Jumper 0.6mm/12.5mm------B W806 0094101105 Jumper 0.6mm/12.5mm------B...
  • Page 41 List of Parts Location Material code Parts name Type Qt. (Unit) Remark R940 0094100946 Resister RT14-1/4W-33 ±5%------T R935 0094101306 Resister RT15-1/2W-1M ±5%------T R908 0094101118 Resister RS11-1/2W-2.7K ±5%------T R918 0094101118 Resister RS11-1/2W-2.7K ±5%------T R928 0094101118 Resister RS11-1/2W-2.7K ±5%------T W903 0094101103 Jumper 0.6mm/7.5mm------B W901 0094101104 Jumper...
  • Page 42 List of Parts Location Material code Parts name Type Qt. (Unit) Remark 0094102101 Resister RYG2-10W-3.3K ±5%-07-L-A 0090400826 Wire JB11419C----Q (UL) 0094500335 Inductance ZZ0003------N 0090600067 Screw GB9074.4-88 M3*10 0090600067 Screw GB9074.4-88 M3*10 0090600074 Screw GB9074.4-88 M3*8 0090600066 Nut GB6170-86 M3 0090200454 Clamp 0090200771 Clamp TMM0A404 0090802600 Heat sink assembly...
  • Page 43 List of Parts Location Material code Parts name Type Qt. (Unit) Remark C551 0094201057 Capacitor CT81-10B-2B4-2KV-470PF-K-10-C-A C708 0094201251 Capacitor CD110-50V-4.7 F-M-05-F-A C803 0094201281 Capacitor CD110-16V-470 F-M-05-F-A C615 0094201009 Capacitor CD110-25V-470 F-M-05-E-A C625 0094201009 Capacitor CD110-25V-470 F-M-05-E-A C564 0094201403 Capacitor CD110-25V-2200 F-M-07-G-A C306 0094201015 Capacitor CD110-35V-470 F-M-05-E-A...
  • Page 44 List of Parts Type Location Material code Parts name Qt. (Unit) Remark W1003 0090400186 Wire JT2211-C0081Q XS806 0094300112 Connect housing TJC3-4A RL551 0094000801 Relay OMIT-SS-112LM RL552 0094101104 Relay 0.6mm/10mm------B L431 0094500336 Inductance YC0008-15-A-A L432 0094500336 Inductance YC0008-15-A-A L504 0094500336 Inductance YC0008-15-A-A L505 0094500336 Inductance...
  • Page 45: Damageable Parts List

    Damageable Parts List 16. Damageable Parts List Location Material Code Parts Name Type Qt. (unit) Remark XS901 0094300290 Connect housing GZS10-2-AC2-DGV 0094600119 Oscillator CSB503F58 N641 0094400796 TDA9850 V301 0094101006 Transistor 2SC1815(Y)------F V432 0094400465 Transistor 2SD1651----B-A V513 0094401093 STR-F6654 N801 0094400417 TC4053BP V601 0094400527...
  • Page 46 ABBREVIATION OF PART NAME AND DESCRIPTION RESISTOR PART NAME & DESCRIPTION PART NAME & DESCRIPTION TYPE ALLOWANCE TYPE ALLOWANCE Carbon f 1% f 5% Ceramic Solid f 5% Ceramic Metal f 10% Film Oxide Electrolytic Fuse Tantalum +100%-0% +80%-0% CAPACITOR Terminal view of transistors KSC815-YTA KSR1010TA...

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