background image

 

Adjustable Items   
 

Direct access key   

Items 

Description 

Preset 

Remark 

“1” 5/6HSH 

Horizontal 

shift 

ON 

 

 

 

 

 

“2” 5/6VSL 

Vertical 

slop 

21 

 5/6VAM 

Vertical 

amplitude 

45 

 5/6SCL 

S-correction 

20 

 5/6VSH 

Vertical 

shift 

38 

 

5/6VOF 

OSD Vertical offset 

38 

 

HOF* 

OSD Horizontal offset 

20 

 

 

 

 

 

“3” 

RED 

Black level offset R 

32 

 

GRN 

Black level offset G 

32 

 

WPR 

White point R 

30 

 

WPG 

White point G 

26 

 

WPB 

White point B 

38 

 

YDAV 

Y-Delay for PAL 

 

 

 

 

 

 

“4” TOP 

AGC 

Take-over 

point 

32 

 VOL 

Volume 

36 

 

 

9874 

Output level of TDA9874A 

18 

 

 

AVLT 

TDA9874A AVL delay time 
0=OFF, 1=2s, 2=4s, 3=8s 

1  

 9860 

Sub-volume 

of 

TDA9860/59 

59 

 

 

IFFS 

IF 2 = 38.9MHz, 3 = 38MHz 

 

 

HDOL 

Cathode drive level 

 

 AGC 

IF 

AGC 

speed 

 

 VG2B 

VG2 

Brightness 

42 

 

 

 

 

 

 

“5” 

Picture preset 1 

 

 

 

 0CON 

Listen: 

Contrast 

 0BRI 

Listen: 

Brightness 

 0COL 

Listen: 

Colour 

50 

 0SHP 

Listen: 

Sharpness 

50 

 1CON 

Soft: 

Contrast 

45 

 1BRI 

Soft: 

Brightness 

45 

 1COL 

Soft: 

Colour 

50 

 1SHP 

Soft: 

Sharpness 

50 

 

 

 

 

 

“6” 

Picture preset 2 

 

 

 

 2CON 

Standard: 

Contrast 

75 

 2BRI 

Standard: 

Brightness 

50 

 2COL 

Standard: 

Colour 

50 

 2SHP 

Standard: 

Sharpness 

60 

 3CON 

Dynamic: 

Contrast 

85 

 3BRI 

Dynamic: 

Brightness 

60 

 3COL 

Dynamic: 

Colour 

60 

 3SHP 

Dynamic: 

Sharpness 

80 

 
NOTE: THE ITEMS WITH REMARK “A” IS ADJUSTABLE DATA.   
 
 
 
 
 
 
 
 
 
 
 
 

 

6

Summary of Contents for BH2004D

Page 1: ...D 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...

Page 2: ...y the constant improvement 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...

Page 3: ...t check high voltage by 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 groun...

Page 4: ...2 Block diagram TDA8377 PS N2 series with mono intercarrier sound demodulator 4...

Page 5: ...stment of corresponding 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...

Page 6: ...4A 18 AVLT TDA9874A AVL delay time 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 pr...

Page 7: ...t 7 TDA8377 1 TDA9377 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 E...

Page 8: ...f digital ground of 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...

Page 9: ...control signal input Note 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 Soun...

Page 10: ...4 4 5 1 1 8 0 0 18 0 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...

Page 11: ...e centre of the screen Fig 3 8 Move 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 deflect...

Page 12: ...nvergence DYNAMIC CONVERGENCE 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...

Page 13: ...106 25V 220 F C102 MTZJ5 1B DZ102 63V 0 1 F 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 S...

Page 14: ...group Sincere Forever 28...

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