background image

 

 
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). 

 
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. 

 
4. Repeat 2 and 3 above, and make the best 

convergence. 

 
 
 

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. (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) 
 

                         

  RED        GREEN    BLUE 

 

 BLUE 

                   

RED 

 

GREEN 

 

 

 

 

 

 

  GREEN 
                   

RED    

 

 

 

 

 

 

  BLUE 
 
 
 

 

BLUE      GREEN      RED

                   

Fig.2

 

(FRONT VIEW) 

 
RED    GREEN    BLUE                BLUE    GREEN    RED 

       

RED 

                   

GREEN

                   

BLUE 

 
 

               

 
BLUE 

             

GREEN

                   
RED 

Fig. 3 

 

 

 

 

12

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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