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Haier BH2004D Service Manual

Colour television
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COLOUR TELEVISION
■ Features
51cm super flat picture tube
Auto search 181 program presetting and memory
CCD & V-CHIP
NO:M-MR-AE-BH2004D-8377
All manuals and user guides at all-guides.com
BH2004D
Service Manual
Haier Group
MODEL :
BH2004D
(America)
Edition:2004/4/17

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Summary of Contents for Haier BH2004D

  • Page 1 All manuals and user guides at all-guides.com BH2004D COLOUR TELEVISION Service Manual MODEL : BH2004D (America) ■ Features 51cm super flat picture tube Auto search 181 program presetting and memory CCD & V-CHIP Haier Group NO:M-MR-AE-BH2004D-8377 Edition:2004/4/17...

  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com This manual is the latest at the time of print, and does not include the modification which may be made after the printing, by the constant improvement of product. CONTENTS Safety precautions……………………………………………………………..……………3 TV block diagram……………………………………………………………………..…….4 Replacement of memory IC………………………………………………………….……5 Service adjustment……………………………………………………………..…………...5 ICs functional description…………………………………………………………………8...

  • Page 3: Safety Precautions

    All manuals and user guides at all-guides.com 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...

  • Page 4: Tv Block Diagram

    All manuals and user guides at all-guides.com Block diagram TDA8377 PS/N2 series with mono intercarrier sound demodulator...

  • Page 5: Replacement Of Memory Ic

    All manuals and user guides at all-guides.com 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) Standby off Switch the power off and unplug the power cord from AC outlet.
  • Page 6 All manuals and user guides at all-guides.com Adjustable Items Direct access key Items Description Preset Remark “1” 5/6HSH Horizontal shift “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”...
  • Page 7 All manuals and user guides at all-guides.com Optional data Function Description Preset Remark Bit 7 RESERVE 1 = Enable Bit 6 1 = Enable Bit 5 Halftone 1 = Enable Bit 4 1 = Enable Bit 3 1 = Enable Bit 2 Comb filter 1 = Enable...

  • Page 8: Ics Functional Description

    All manuals and user guides at all-guides.com 6. OP6 Function Description Preset Remark Bit 7 RESERVE Bit 6 RESERVE 1 = Enable Bit 5 SOFT CHANGE AV 1 = Enable Bit 4 LISTEN 1 = Enable Bit 3 INNER DVD 1 = Enable Bit 2 ZOOM...
  • Page 9 All manuals and user guides at all-guides.com CHROMA SVHS (C) input AUDOUT Audio output INSSW2 YUV insertion input R2/VIN R input / V (R-Y) input / PR input G2/YIN G input / Y input B2/UIN B input / U (B-Y) input / PB input BCLIN Beam current limiter input BLKIN...

  • Page 10: Test Point Waveform

    All manuals and user guides at all-guides.com 6. Test point Waveforms 3.8Vpp 2.5Vpp 1.2Vpp 2.5Vpp 2.6Vpp TDA9370 PIN38 TDA9370 PIN40 TDA9370 PIN53 TDA9370 PIN52 TDA9370 PIN51 0.9Vpp 5Vpp 95Vpp 95Vpp 95Vpp CRT KR CRT KG CRT KB TDA9370 PIN33 TDA9370 PIN34 0.8Vpp 1Vpp 1.3Vpp...

  • Page 11: Purity / Convergence Adjustment

    All manuals and user guides at all-guides.com 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.
  • Page 12 All manuals and user guides at all-guides.com 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.
  • Page 13 All manuals and user guides at all-guides.com MENU TV/AV TJC3-2Y CNS01 RS01 CT01 AV1-VIN AV1-AL AV1-AR CNB02 RT02 RS03 CNS02 RB05 RB04 RB03 RB02 RB01 CNB01 1.8K 1.2K TJC3-2Y CNT01 1/6W-100 TJC3-10A A6-5V R208 A6-5V N202 R278 R222 R286 R220 R212 R211 R215...

  • Page 14: List Of Parts

    All manuals and user guides at all-guides.com Sincere Forever group...

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