Haier BH2004D Service Manual Download | Manualshive

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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

Edition:2004/4/17

NO:M-MR-AE-BH2004D-8377

All manuals and user guides at all-guides.com

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Summary of Contents for BH2004D

Page 1: ... MODEL BH2004D America Features 51cm super flat picture tube Auto search 181 program presetting and memory CCD V CHIP Haier Group Edition 2004 4 17 NO M MR AE BH2004D 8377 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 2: ...ment of product CONTENTS 1 Safety precautions 3 2 TV block diagram 4 3 Replacement of memory IC 5 4 Service adjustment 5 5 ICs functional description 8 6 Test point waveform 10 7 All ICs voltages 10 8 Purity convergence adjustment 11 9 List of Parts 14 10 Exploded View 15 11 Circuit diagram Attached 2 All manuals and user guides at all guides com ...

Page 3: ... drawing an arc Use a high voltage meter or a high voltage probe with a VTVM Discharge the picture tube before attempting meter connection by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10kΩ 2W resistor to the anode button 8 When service is required observe the original lead dress Extra precaution should be given to assure correct lead dress in the...

Page 4: ... 2 Block diagram TDA8377 PS N2 series with mono intercarrier sound demodulator 4 All manuals and user guides at all guides com ...

Page 5: ...g factory menus Press EXIT key to exit factory mode Focus adjustment 1 Receive a crosshatch signal 2 While watching the screen adjust the FOCUS VR on the FBT to make the vertical and horizontal lines as fine and sharp as possible Geometrical adjustment Receive NTSC standard complete pattern signal Adjustment steps a Adjust VSL to the centre horizontal line just appears from half bottom shadow b Ad...

Page 6: ... 0 OFF 1 2s 2 4s 3 8s 1 9860 Sub volume of TDA9860 59 59 IFFS IF 2 38 9MHz 3 38MHz 2 HDOL Cathode drive level 5 AGC IF AGC speed 1 VG2B VG2 Brightness 42 5 Picture preset 1 0CON Listen Contrast 0 A 0BRI Listen Brightness 0 A 0COL Listen Colour 50 A 0SHP Listen Sharpness 50 A 1CON Soft Contrast 45 A 1BRI Soft Brightness 45 A 1COL Soft Colour 50 A 1SHP Soft Sharpness 50 A 6 Picture preset 2 2CON Sta...

Page 7: ...0 TDA9378 1 EA Bit 6 16 9 1 Enable 0 EA Bit 5 RESERVE 0 EA Bit 4 RESERVE 0 EA Bit 3 YPbPr 1 YPbPr 0 Yuv 1 EA Bit 2 Blue Black back 1 Blue Back 0 Black Back 1 EA Bit 1 RESERVE 0 EA Bit 0 Woofer 1 Enable 0 EA 4 OP4 Bit Function Description Preset Remark Bit 7 RESERVE 1 Enable 0 EA Bit 6 VCHIP 1 Enable 1 EA Bit 5 RESERVE 1 Enable 0 EA Bit 4 Soft program change 1 Enable 0 EA Bit 3 RESERVE 1 YPbPr 0 Yu...

Page 8: ...TV processor SECPLL 13 Internally connected VP2 14 2 nd supply voltage TV processor 8V DECDIG 15 decoupling digital supply of TV processor PH2LF 16 Phase 2 filter PH1LF 17 Phase 1 filter GND3 18 Ground 3 for TV processor DECBG 19 Band gap decoupling AVL EWD 20 Automatic volume levelling VDRB 21 Vertical drive B output VDRA 22 Vertical drive A output IFIN1 23 IF input 1 IFIN2 24 IF input 2 IREF 25 ...

Page 9: ...ote Pin TV SVHS AV1 AV2 62 1 0 0 1 63 1 1 0 0 2 N902 24C08 PCF8598 PIN Function 1 GND 2 GND 3 Upper resistance 4 GND 5 SDA data wire 6 SCL clock wire 7 GND 8 5V Power 3 N601 Sound power amplify AN7523N Symbol PIN Function Symbol PIN Function Vcc 1 Power supply GND 7 ground Out 1 2 Ch 1 output In 2 8 Ch 2 input GND out 1 3 Ch 1Ground VOL 9 Volume Control Out 1 4 Ch 1 output Out 2 10 Ch 2 output Sta...

Page 10: ...17 0 2 3 8 5 3 PIN 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 V 4 0 4 0 5 0 7 0 8 1 9 1 9 3 9 3 8 1 6 3 2 2 3 0 2 3 0 2 PIN 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 V 0 5 0 3 0 1 7 2 4 3 4 8 3 9 0 3 3 0 3 6 1 4 2 5 2 5 2 5 PIN 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 V 1 9 5 0 2 4 2 4 2 4 3 1 0 3 2 0 1 8 1 7 0 3 2 5 1 3 3 5 TDA8357 PIN 1 2 3 4 5 6 7 8 9 V 0 8 0 7 16 6 9 0 43 7 2...

Page 11: ...e the deflection yoke forward and fix the position of the deflection yoke so that the whole screen will become green 9 Insert the wedge to the top side of the deflection yoke so that it will not move 10 Input a crosshatch signal 11 Verify that the screen is horizontal 12 Input red and blue raster signals and make sure that purity is properly adjusted CRT WEDGE DEFLECTION YOKE P 4 6 P C MAGNETS P P...

Page 12: ...ERGENCE ADJUSTMENT 1 Move the deflection yoke up and down and overlap lines in the periphery Fig 2 2 Move the deflection yoke left to right and overlap the lines in the periphery Fig 3 3 Repeat 1 and 2 above and make the best convergence After adjustment fix the wedge at the original position Fasten the retainer screw of the deflection yoke Fix the 6 magnets with glue FRONT VIEW Fig 1 FRONT VIEW R...

Page 13: ...3V 0 1μF C101 1 6W 68K R261 1N4148 VD217 1 6W 9 1K R260 1 6W 1K R227 1 6W 9 1K R262 B4 12V C214 104 SYSTEM 1W 33 R110 LGA0203 100 L102 SDA SCL 1 6W 22 R103 SPEAKER SPEAKER INPUT INPUT 2 VCC 3 OUT 4 GND 5 VFB 6 OUT 7 VO 8 VI 9 TDA8357J N301 1 2W 1 R415 100V 33uF C304 LGA0305 10uH L306 MTZJ15C DZ303 63V 0 047μF C306 1 2W 1 5 R308 1 2W 10 R302 1 6W 12K R311 1 6W 270K R314 1 6W 1 3K R313 1 6W 1 2K R31...

Page 14: ...group Sincere Forever 28 All manuals and user guides at all guides com ...

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