background image

 

 

9

 

VIF APC 

36 

VIF APC 

RF AGC 

37 

RF AGC 

VIF IN2 

38 

VIF IN2 

VIF IN1 

39 

VIF IN1 

VIF AGC 

40 

VIF AGC 

VIF VCC F/B 

41 

VIF VCC F/B 

VIF VCC(5.0V) 

42 

5.0V POWER 

EXT AU

R

IN/EXT AU1 

IN 

43 

EXT AU

R

IN/EXT AU1 IN 

AU BYPASS 

44 

AU BYPASS 

SIF MIX F/B 

45 

SIF MIX F/B 

AU ATT

R

OUT/ATT 

OUT 

46 

AU ATT

R

OUT/ATT OUT 

DIRECT OUT 

47 

DIRECT OUT 

AU ATT

L

OUT/ATT 

OUT 

48 

AU ATT

L

OUT/ATT OUT 

ACL/ABCL 

49 

ACL/ABCL 

HI VCC

8.0

 

50 

HI VCC

8.0

 

R OUT 

51 

R OUT 

G OUT   

52 

G OUT   

B OUT 

53 

B OUT 

VREG VCC

8.7V

 

54 

VREG VCC

8.7V

 

MNITOR-OUT 

55 

MNITOR-OUT 

MCU RESET 

56 

MCU RESET 

P20 

57 

P20 

P21 

58 

P21 

P22 

59 

P22 

HLF 

60 

HLF 

VHOLD 

61 

VHOLD 

CVIN 

62 

CVIN 

P26/AD6 

63 

P26/AD6 

AD6/P27 

64 

AD6/P27 

P35/TIM21 

65 

P35/TIM21 

CNVSS 

66 

CNVSS 

TEST1 Note1 

67 

TEST1 Note1 

TEST2 Note2 

68 

TEST2 Note2 

VSS 

69 

VSS 

FILT 

70 

FILT 

VDD 

71 

VDD 

P36 

72 

P36 

P17/INT3/AD4 

73 

P17/INT3/AD4 

P16/INT2/AD3 

74 

P16/INT2/AD3 

P15/INT1 

75 

P15/INT1 

P10 

76 

PIN 10 

P11/SCL1 

77 

I

2

C-bus clock line 1 

P12/SCL2 

78 

I

2

C-bus clock line 2 

P13/SDA1 

79 

I

2

C-bus data line 1 

P14/SDA2 

80 

I

2

C-bus data line 2 

 
 

 
2.  IC602 24C16 

PIN 

Function 

GND 

GND 

Upper resistance 

GND 

SDA data wire 

SCL clock wire 

GND 

+5V Power 

 
 
 

Summary of Contents for 21T07

Page 1: ...EATURES l DVD TV 20 COMBO l AUTO TUNE 181 CHANNES l DVD VCD SVCD CD CD R CD RW JPEG MP3 COMPATIBLE l FORMATO DE VIDEO 4 3PS 4 3LB l DOLBY AC 3 DECODE l PANATAL LOCK l ATSC TUNER CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE TV 8888 88 ...

Page 2: ... 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 11 8 Purity convergence adjustment 12 9 DVD maintenance 14 ...

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 10kO 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 R2J10165GC series with stereo intercarrier sound demodulator ...

Page 5: ...d press VOLUME VOLUME key to make data adjustment 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 NTSC standard complete pattern signal Adjustment steps a Adjust V SC S eme...

Page 6: ...0 IN YUV Black level offset R GB YUV 128 128 0 IN YUV Black level offset G BB YUV 128 128 0 IN YUV Black level offset B RD YUV 128 128 0 IN YUV White point R BD YUV 128 128 0 IN YUV White point B CR PEDDOT 0 15 8 CR benchmark voltage adjust CB PEDDOT 0 15 8 CB benchmark voltage adjust CRCB PED ON 0 1 1 YUV benchmark voltage switch CRCB GAIN UP 0 1 0 YUV benchmark voltage plus P4 Items Preset Remar...

Page 7: ...mory 3 else C_10164 5 070119 ATV software edition P8 Items Preset Remark Description AUTO N PM PN 0 1 1 AUTO N PM PN function choice AUTO N N4 P 0 1 0 AUTO N PM PN function choice PAL 0 1 0 PAL 0 N 1 Y NTSC 0 1 1 NTSC ON Y OFF N N443 0 1 1 NTSC4 43 ON Y OFF N P358 0 1 0 3 58PAL 0 N 1 Y PAL M 0 1 0 PAL M ON Y OFF N PAL N 0 1 0 PAL N ON Y OFF N P9 Items Preset Remark Description AV2 0 1 1 AV2 1 Y 0 ...

Page 8: ...3 SP02 PWM SP03 PWM 4 SP03 PWM TEST0 5 TEST0 P04 AD2 6 P04 AD2 P05 AD1 7 P05 AD1 P06 TIM31 8 P06 TIM31 AFT AD0 9 SIF auto phase control DEF VCC 8 0V 10 8V POWER V RAMP 11 V RAMP VRAMP CAP 12 VRAMP CAP AFC 1 FIL 13 SIF auto phase control filter DEF VCC 5 0V 14 5V POWER H OUT 15 Horizontal SIGNAL OUT FBP IN 16 FBP IN DEF GND 17 GND VRAMP AGC 18 VRAMP AGC Cb IN YcbCr 19 Cb IN YcbCr Cr IN YcbCr 20 Cr ...

Page 9: ... 8 7V 54 VREG VCC 8 7V MNITOR OUT 55 MNITOR OUT MCU RESET 56 MCU RESET P20 57 P20 P21 58 P21 P22 59 P22 HLF 60 HLF VHOLD 61 VHOLD CVIN 62 CVIN P26 AD6 63 P26 AD6 AD6 P27 64 AD6 P27 P35 TIM21 65 P35 TIM21 CNVSS 66 CNVSS TEST1 Note1 67 TEST1 Note1 TEST2 Note2 68 TEST2 Note2 VSS 69 VSS FILT 70 FILT VDD 71 VDD P36 72 P36 P17 INT3 AD4 73 P17 INT3 AD4 P16 INT2 AD3 74 P16 INT2 AD3 P15 INT1 75 P15 INT1 P1...

Page 10: ... 1 Inverting input Poutput stage supply 6 Output stage supply SUPPLY VOLTAGE 2 Supply voltage Input 7 Non inverting input Flyback generator 3 Flyback generator GND 4 Ground or negative supply Output 5 Output 5 U101 Tuner PIN Function PIN Function 1 Nc 7 5V 2 Tu 8 IFA1 3 Rf agc 9 IF AGC 4 SCL 10 IFD 1OUT 5 SDA 11 IFD 2 OUT 6 Btl 6 Test point Waveforms 5Vpp 0 9Vpp 1 3Vpp H H 1Vpp V CRT KB CRT KG CRT...

Page 11: ... 68 2 86 0 2 74 0 17 1 47 1 47 2 53 3 09 5 3 3 3 45 2 4 3 43 3 15 3 43 PIN 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 V 2 47 8 03 2 57 2 49 2 59 8 87 0 42 4 9 4 94 4 95 3 82 1 96 0 33 2 9 4 95 4 94 PIN 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 V 4 95 0 0 16 4 95 0 1 76 4 95 4 95 4 94 4 83 0 03 4 95 3 52 3 7 3 58 3 73 STV9302A PIN 1 2 3 4 5 6 7 V 2 993 26 8 14 57 0 1 96 26 05 2 991 TFA98...

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: ...t 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 FRO...

Page 14: ...onding pins of MT1389D to see if there is any short circuit break or faulty soldering 4 System in normal operation but the audio has no sound 1 Because the AUDIO DAC is built in MTK1389D IC you need to check the lower passing amplifying circuit and the MUTE circuit at the back of the LPF circuit Also check if there is any power supply to the LPF circuit 2 Check if the power supply voltage required...

Page 15: ...15 Sincere Forever Haier Group ...

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