Haier HTR21S34 Service Manual
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Haier HTR21S34 Service Manual

Haier HTR21S34 Service Manual

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CAUTION
READ
THIS MANUAL CAREFULLY TO DIAGNOSE
TROUBLE CORRECTLY BEFORE OFFERING
SERVICE .

SERVICE MANUAL

Colour Television
Haier model:21TV6H
Customer model: HTR21S34
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Summary of Contents for Haier HTR21S34

  • Page 1: Service Manual

    CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE . SERVICE MANUAL Colour Television Haier model:21TV6H Customer model: HTR21S34...

  • Page 2: Table Of Contents

    CONTENTS Safety precautions……………………………………………………………..……………3 TV block diagram……………………………………………………………………..…….4 Replacement of memory IC………………………………………………………….……5 Service adjustment……………………………………………………………..…………...5 ICs functional description…………………………………………………………………8 Test point waveform………………………………………………………………………10 All ICs voltages……………………………..……………………………………………….10 Purity / convergence adjustment………………………………………………………12 CIRCUIT DIAGRAM…………………………………………………………………Attached 10. WIRING CONNECTION DIAGRAM………………………………………………Attached...

  • Page 3: Safety Precautions

    1. SAFETY PRECAUTIONS The design of this product contains special hardware, many Isolation Check circuits and components especially for safety purposes. For (Safety for Electrical Shock Hazard) continued protection, no changes should be made to the After re-assembling the product, always perform an isolation original design unless authorized in writing by the check on the exposed metal parts of the cabinet (antenna manufacturer.

  • Page 4: Tv Block Diagram

    Block diagram TDA11115HPS/N2 series with mono intercarrier sound demodulator...

  • Page 5: Replacement Of Memory Ic

    3. REPLACEMENT OF MEMORY IC 1. MEMORY IC. This TV uses memory IC. In the memory IC are memorized data for correctly operating the video and deflection circuits. 2. PROCEDURE FOR REPLACING MEMORY IC (1) Power off Switch the power off and unplug the power cord from AC outlet. (2) Replace IC Be sure to use memory IC written with the initial data values.
  • Page 6 Direct access key Items Description Preset Remark “1” 6HSH/5HSH Horizontal shift 0~63 VG2 Brightness “2” 5/6VSL Vertical slop 5/6VAM Vertical amplitude 5/6SCL S-correction 5/6VSH Vertical shift 5/6VOF OSD Vertical offset HOF* OSD Horizontal offset “3” BLOC RED/RED Black level offset R GRN/GRN Black level offset G BLU/BLU...
  • Page 7 Function Description Preset Remark Bit 7 RUSSIA 1=Enable Bit 6 ITALY 1=Enable Bit 5 GERMANY 1=Enable Bit 4 FRANCE 1=Enable Bit 3 RUTKISH 1=Enable Bit 2 ARABIC 1=Enable Bit 1 FARSI 1=Enable Bit 0 ENGLISH 1=Enable 4. OP4 Function Description Preset Remark AGCT...

  • Page 8: Ics Functional Description

    7. OP7 Function Description Preset Remark 1=Enable BLUESCREEN 1=Enable FADE 1=Enable 1=Enable 1=Enable SVHS 1=Enable 8. OP8 Function Description Preset Remark INIT 1=Enable LOGOYEND 1=Enable Note：Don’t adjust any OPTION items, please inform the engineer about any change. 5. ICs functional description 1.
  • Page 9 TUNER AGC Tuner AGC output AUDEEM/SIFIN1 *1 Audio deemphasize or SIF input DECSDEM/SIFIN2 Decoupling sound demodulator GND2 Ground 2 for TV processor SNDPLL/SIFAGC *1 Narrow band PLL filter Automatic Volume Levelling HOUT Horizontal output FBISO Flyback input/sandcastle output AUDEXT External audio output EHTO EHT/over voltage protection input PLL IF...

  • Page 10: Test Point Waveform

    4. N301: Vertical output (TDA4864) Symbol Function Symbol Function INV IN Input PUMP UP Pump up power INV IN Input V OUT Vertical output Pump up power V PRO Vertical protection V OUT Vertical output V FEEDBACK Vertical feedback Ground 5.
  • Page 11 TDA4864 TDA1517 2.75 0.35 24C08/PCF8598...

  • Page 12: Purity / Convergence Adjustment

    8. PURITY / CONVERGENCE ADJUSTMENT PURITY ADJUSTMENT WEDGE Demagnetize CRT with the demagnetizer. DEFLECTION YOKE Loosen the retainer screw of the deflection yoke. Remove the wedges. Input a green raster signal from the signal generator, and turn the screen to green raster. Move the deflection yoke backward.

  • Page 13: Circuit Diagram

    STATIC CONVERGENCE ADJUSTMENT 1. Input a crosshatch signal. 2. Using 4-pole convergence magnets overlap the red and blue lines in the center of the screen (Fig. 1) and turn them to magenta (red/blue). (FRONT VIEW) 3. Using 6-pole convergence magnets overlap the magenta (red/blue) and green lines in the center of the screen and turn them to white.
  • Page 14 X105 Haier TV 0.32 Video CP101 PROG+ PROG- VOL+ VOL- Menu AV/TV D101 SW107 SW106 SW105 SW104 SW103 SW102 +5Vstb R108 R107 R106 R105 R102 1.8K 1.2K C101 10uF/16V S101 S102 R705 R712 S105 Front AV S701 X301 R711 V707 CON-05 RGB.AMP...
  • Page 15 CONTROLBAND X701 X501 X502...

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