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COLOUR TELEVISION

SERVICE MANUAL

TDC1354AD

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Summary of Contents for TDC1354AD

Page 1: ...COLOUR TELEVISION SERVICE MANUAL TDC1354AD ...

Page 2: ...cautions 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 14 10 Circuit diagram 15 2 ...

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 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 co...

Page 4: ... 2 Block diagram TDA8377 PS N3 2 series with mono intercarrier sound demodulator 4 ...

Page 5: ...ta 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 appears ...

Page 6: ...ain reduction 4 TOP AGC Take over point 27 A VOL Volume 36 9874 Gain control for TDA9874 59 AVLT 5 9860 1 IFFS Vision IF 32 HDOL Cathode drive level 31 AGC IF AGC speed VG2B VG2 Brightness PF Peaking center frequency 5 Picture preset 1 0CON Listen Contrast 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 C...

Page 7: ...dBµV 0 EA Bit 6 OP_SOY 1 Enable 0 EA Bit 5 OP_ARABIC_SET 1 Enable 1 EA Bit 4 OP_FARSI_SET 1 Enable 0 EA Bit 3 OP_CYRILLIC_SET 1 Enable 1 EA Bit 2 OP_EUROUP_SET 1 Enable 1 EA Bit 1 OP_AUTO_SOUND 1 Enable 1 EA Bit 0 OP_AVL 1 Enable 1 EA 3 OP3 Bit Function Description Preset Remark Bit 7 OP_RUSSIA 1 Enable 1 EA Bit 6 OP_ITALY 1 Enable 0 EA Bit 5 OP_GERMANY 1 Enable 0 EA Bit 4 OP_FRANCE 1 Enable 0 EA ...

Page 8: ... Enable 0 EA Bit 5 OP_PROG ID 1 Enable 0 EA Bit 4 OP_LED 1 Enable 0 EA Bit 3 OP_ TWIST 1 Enable 1 EA Bit 2 OP_BYELORUSSIAN 1 Enable 1 EA Bit 1 OP_ UKRANIAN 1 Enable 1 EA Bit 0 OP_AV1 1 Enable 1 EA 8 OP8 Bit Function Description Preset Remark Bit 7 OP_TILT 1 Enable 1 EA Bit 6 OP_DIRECT_WITCH ON 1 Enable 0 EA Bit 5 OP_INEER DVD 1 Enable 0 EA Bit 4 OP_PROG FREQ 1 Enable 0 EA Bit 3 OP_ FAST_BAR 1 Enab...

Page 9: ...CSDEM 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 p...

Page 10: ...dby 5 Mute input GND out 2 11 Ch 2 Ground In 1 6 Ch 1 input Out 2 12 Ch 2 output 4 N301 Vertical output TDA8357A Symbol PIN Function Symbol PIN Function INV IN 1 Input PUMP UP 6 Pump up power INV IN 2 Input V OUT 7 Vertical output Vcc 3 Pump up power V PRO 8 Vertical protection V OUT 4 Vertical output V FEEDBACK 9 Vertical feedback GND 5 Ground 5 U101 Tuner PIN Function PIN Function 1 AGC 7 5V 2 v...

Page 11: ...1 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 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 ...

Page 12: ... 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 P ...

Page 13: ...onvergence 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 ...

Page 14: ...f 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 for playing ...

Page 15: ...6 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 22 R103 SPEAKER SPEAKER INPUT INPUT 2 VCC 3 OUT 4 GND 5 VFB 6 OUT 7 VO 8 VI 9 TDA8357J N301 1 2W 1 R415 100V 33uF C304 LGA0305 10uH L306 MTZJ15C DZ303 63V 0 047μF C306 1 2W 1 5 R308 1 2W 10 R302 1 6W 12K R311 1 6W 270K ...

Page 16: ...Sincere Forever 16 ...

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