background image

 

 

9

 

IREF 

25 

Reference current input 

VSC 

26 

Vertical sawtooth capacitor 

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 

63 

 
2.  N202 24C08/PCF8598 

PIN 

Function 

GND 

GND 

Upper resistance 

GND 

SDA data wire 

SCL clock wire 

GND 

+5V Power 

 
3.  N601: Sound power amplify (AN7522N) 

Symbol 

PIN 

Function 

Symbol 

PIN 

Function 

Vcc 

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 

                    

                                             

                          

Содержание MX-TM7414Mpeg4

Страница 1: ...MX TM7414Mpeg4 l FEATURES l DVD TV14 COMBO l AUTO TUNE 218 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 CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE ...

Страница 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 10 8 Purity convergence adjustment 11 9 DVD maintenance 13 ...

Страница 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 ...

Страница 4: ... 4 2 Block diagram TDA9351PS N2 series with mono intercarrier sound demodulator ...

Страница 5: ...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 PAL standard complete pattern signal Adjustment steps a Adjust VSL to the centre horizontal line just appear...

Страница 6: ...t 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 Standard Contrast 75 A 2BRI Standard Brightness 50 A 2COL Standard Colour 50 A 2SHP Standard Sharpness 60 A 3CON Dynamic Contrast 85 A 3BRI Dynamic Brightness 60 A 3COL Dynamic Colour 60 A 3SHP D...

Страница 7: ...on Description Preset Remark Bit 6 HALFTONE 1 Enable 1 EA Bit 5 IDENT_SENSITIVE 1 EA Bit 4 HCO 1 Enable 0 EA Bit 3 LOGO 1 EA Bit 2 TILT 0 EA Bit 1 SPANISH 1 EA Bit 0 ROMANIA 0 EA 5 OP5 Bit Function Description Preset Remark Bit 7 STORE_AV 1 Enable 1 EA Bit 6 OSO 1 Enable 0 EA Bit 5 SOFR_CHANGE 1 Enable 0 EA Bit 4 FADE 1 Enable 0 EA Bit 3 SOUND_M 1 Enable 0 EA Bit 2 SOUND_I 1 Enable 0 EA Bit 1 SOUN...

Страница 8: ... DESCRIPTION STAND BY output 1 In STAND BY mode low level Power OFF For Power ON this pin will be high SCL 2 I2 C bus clock line SDA 3 I2 C 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...

Страница 9: ... 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 RESE...

Страница 10: ...V FEEDBACK 9 Vertical feedback GND 5 Ground 5 U101 Tuner PIN Function PIN Function 1 AGC 7 5V 2 vacant 8 vacant 3 Gnd 9 Vt 33V 4 SCL 10 Gnd 5 SDA 11 IF Out 6 5V 6 Test point Waveforms 7 IC voltages 5Vpp 0 9Vpp 1 3Vpp H H 1Vpp V CRT KB CRT KG CRT KR 95Vpp 95Vpp 95Vpp H H H TDA9351 PIN53 2 5Vpp 2 5Vpp 3 8Vpp H H H TDA9351 PIN52 TDA9351PIN51 TDA9351 PIN33 TDA9351 PIN34 0 8Vpp V TDA9351 PIN21 TDA9351 ...

Страница 11: ... 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 0 3 7 2 AN 7522N 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...

Страница 12: ...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 DEFLECTION YOKE...

Страница 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...

Страница 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...

Страница 15: ...CN602 CN601 B SCL SDA AGC 9 GND BT 11 IF 10 8 3 1 5 4 6 7 2 TU101 TEDE9 276A 16V 10μF C107 104 C202 C201 10u KA33V DZ201 A1 33V D2901C SF101 MTZJ9 1B DZ101 16V 47μF C108 BF370 V101 1 6W 10 R104 1 6W 13K R105 1 6W 470 R106 25V 220μF C102 MTZJ5 1B DZ102 63V 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...

Страница 16: ...15 Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com ...

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