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9

TUNER AGC 

27 

Tuner AGC output 

AUDEEM/SIFIN1 *1 

28 

Audio deemphasize or SIF input 

DECSDEM/SIFIN2   

29 

Decoupling sound demodulator 

GND2 

30 

Ground 2 for TV processor 

SNDPLL/SIFAGC *1 

31 

Narrow band PLL filter 

AVL 

32 

Automatic Volume Levelling   

HOUT 33 

Horizontal 

output 

FBISO 

34 

Flyback input/sandcastle output 

AUDEXT 35 

External 

audio 

output 

EHTO 

36 

EHT/over voltage protection input 

PLL IF 

37 

IF-PLL loop filter 

IFVO/SVO 

38 

IF video output / selected CVBS output 

VP1 

39 

supply voltage TV processor 

CVBS INT 

40 

internal CVBS input 

GND1 41 

ground 

for 

TV 

processor 

CVBS/Y 42 

CVBS/SVHS(Y) 

input 

CHROMA 

43 

SVHS (C) input 

AUDOUT 44 

Audio 

output 

INSSW2 

45 

YUV insertion input 

R2/VIN 

46 

R input / V (R-Y) input / PR input 

G2/YIN 

47 

G input / Y input 

B2/UIN 

48 

B input / U (B-Y) input / PB input 

BCLIN 

49 

Beam current limiter input 

BLKIN 

50 

Black current input 

RO 51 

Red 

output 

GO 52 

Green 

output 

BO 53 

Blue 

output 

VDDA 

54 

Analog supply of Closed Caption decoder and digital supply of TV-processor (3.3 V) 

VPE 55 

Ground 

VDDC 

56 

Digital supply to core (3.3 V) 

OSCGND 

57 

Oscillator ground supply 

XTALIN 

58 

Crystal oscillator input 

XTALOUT 

59 

Crystal oscillator output 

RESET 60 

Ground 

VDDP 

61 

Digital supply to periphery (+3.3 V) 

P1.0/INT1 

62 

AV1 / AV2 mode Output. 

P1.1/T0 

63 

AV /S-VHS mode Output. 

P1.2/INT0 64 

Remote 

control signal input. 

 
Note 

Pin TV 

SVHS 

AV1 AV2 

62 1  0  0  1 
63 1  1  0  0 

 
2. N202 

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 (TDA1517P) 

Symbol PIN 

Function  Symbol PIN

Function 

Vcc 1 

Power 

supply 

GND 

ground 

Out 1 (+) 

Ch 1 output (+) 

In 2 

Ch 2 input 

GND(out 1) 

Ch 1Ground 

VOL 

Volume Control 

Out 1 (-) 

Ch 1 output (-) 

Out 2 (-) 

10 

Ch 2 output (-) 

Standby 

Mute input 

GND(out 2) 

11 

Ch 2 Ground 

In 1 

Ch 1 input 

Out 2 (+) 

12 

Ch 2 output (+) 

 

Summary of Contents for 21TV6H

Page 1: ...SERVICE MANUAL Colour Television Haier model 21TV6H Customer model HTR21S34 CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE ...

Page 2: ...ock 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 12 9 CIRCUIT DIAGRAM Attached 10 WIRING CONNECTION DIAGRAM Attached ...

Page 3: ...not 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 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 ...

Page 4: ... 4 2 Block diagram TDA11115HPS N2 series with mono intercarrier sound demodulator ...

Page 5: ... 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 and horizontal lines as fine and sharp as possible Geometrical adjustment Receive PAL standard complete pattern signal Adjustment steps a Adjust VSL to the centre horizontal line just appears from half bot...

Page 6: ... Take Over A AGC SPEED AGC SPEED A OIF 8 A IF 0 38MHz 1 45 75MHz 2 38 90MHz 3 33 90MHz 0 FFI EVERADJUST 0 GD 0 MTXF 0 BRIGHTMAX 63 CONTRASTMAX 63 CONTRASTMID 55 HUEMID 32 NOTE THE ITEMS WITH REMARK A IS ADJUSTABLE DATA Optional data 1 OP1 Bit Function Description Preset Remark Bit 0 6HSH 5HSH 0 63 0 63 EA Bit 1 VSD 0 63 0 63 EA 2 OP2 Bit Function Description Preset Remark Bit 7 5 6VSL Vertical slo...

Page 7: ... 32 EA 5 OP5 Bit Function Description Preset Remark 1 0BRI Soft Brightness 40 EA 2 0COL Soft Color 40 EA 3 0CON Soft Contrast 40 EA 4 0SHP Soft Sharpness 50 EA 5 1BRI Standard Brightness 50 EA 6 1COL Standard Color 50 EA 7 1CON Standard Contrast 50 EA 8 1SHP Standard Sharpness 20 EA 9 COLORMID COLORMID 26 EA 10 BRIGHTNESSMID BRIGHTNESSMID 32 EA 11 VOLUMEMID VOLUMEMID 32 EA 6 OP6 Bit Function Descr...

Page 8: ...bus data line TUNING 4 tuning Voltage Vt PWM output KEY 5 Control keys input SYSTEM 6 TV system control VOL 7 Sound Volume control PWM output MUTE 8 Sound mute output VSSC P 9 Digit ground for μ controller core and periphery CTL 10 DVD power control STANDBY 11 STANDBY control VSSA 12 Analog ground of digital ground of TV processor SECPLL 13 Internally connected VP2 14 2 nd supply voltage TV proces...

Page 9: ...imiter input BLKIN 50 Black current input RO 51 Red output GO 52 Green output BO 53 Blue output VDDA 54 Analog supply of Closed Caption decoder and digital supply of TV processor 3 3 V VPE 55 Ground VDDC 56 Digital supply to core 3 3 V OSCGND 57 Oscillator ground supply XTALIN 58 Crystal oscillator input XTALOUT 59 Crystal oscillator output RESET 60 Ground VDDP 61 Digital supply to periphery 3 3 V...

Page 10: ...10 11 12 13 14 15 16 V 0 3 8 3 6 3 3 3 5 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 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...

Page 11: ...TDA4864 PIN 1 2 3 4 5 6 7 8 9 V 0 8 0 7 16 6 9 0 43 7 2 0 3 7 2 TDA1517 PIN 1 2 3 4 5 6 7 8 9 10 11 12 V 10 4 4 0 4 4 2 75 1 4 0 1 4 0 35 4 4 0 4 4 24C08 PCF8598 PIN 1 2 3 4 5 6 7 8 V 0 0 5 1 0 3 2 0 0 5 1 ...

Page 12: ...o the 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 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...

Page 13: ...ence 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 9 CIRCUIT DI...

Page 14: ... Gnd C309 220nF R338 100 VP1 1 VP3 2 VP2 3 GND 4 Vout 5 IN 6 IN 7 N801 TDA4864AJ Gnd SCL SDA STBY IR V305 C1815 V301 C1815 V302 C1815 IF1 IF2 TV Audio TV Audio FBLY Hout Cr Y Cb ABL Mute LED Main L Vert Vert FBLY EHT Protect ABL AGC Mute MAIN L MAIN R AV2 AV1 AGC SDA SCL IF2 IF1 Vert Vert 9V Hout SYS STBY 9V Out1 4 SVRR 3 SGND 2 INV1 1 18 17 16 15 INV2 9 M SS 8 Vp 7 Out2 6 PGND 5 14 13 12 11 10 N6...

Page 15: ...Qty X701 X501 X502 CONTROLBAND ...

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