TCL 21A71A, Service Manual

Page 1: ...re 10 4 Schematic Diagram 20 5 IC Brief Introduction 21 6 PCB Layout 37 7 Explode View Diagram 38 8 BOM list 39 This manual is the latest at the time of printing and does not include the modification...

Page 2: ...of uninsulated voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to the person The exclamation point within an equilateral triangle is i...

Page 3: ...nnel 8 Do not subject your television set to impact of any kind Be particularly careful not to damage the picture tube surface 9 Unplug this television set from the wall outlet before cleaning Do not...

Page 4: ...porting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrode and requirements for the...

Page 5: ...21 If you are unable to restorenormal operation by following the detailedprocedurein your operating instructions do not attempt any further adjustment Unplug the set and call your dealer or service te...

Page 6: ...n Others Blue mute Picture Control General Brightness X Sharpness X Contrast X Tint X Color X Picture Control Special Smart Pictures modes 4 VM Color Temperature X Others Picture Noise Reduction Pictu...

Page 7: ...gical clock Calendar X Clock X Channel Skip Channel Swap Channel Adjustment 1 Channel Naming Channel Lock Child Lock X Favorite Channel X Game X Hotel Mode High Sensitive Notebook X On Off Timer X Pan...

Page 8: ...Cinch CVBS Mono In Y C Cinch CVBS Mono In Cinch CVBS Stereo In Cinch CVBS Stereo X In Cinch CVBS Mono In Cinch CVBS Mono Out Cinch CVBS Stereo Out Cinch CVBS Stereo X Out Cinch CVBS Mono Out Cinch CVB...

Page 9: ...English Indication on BACKOVER Made in in family sheet X FCC Elect Shock Caution Label FCC Elect CE Elect Shock Caution Label CE Elect Warning Label Others Approbation FCC FCC FDA FDA UL CUL UL CUL CB...

Page 10: ...NTRAST SUB TINT AND SUB COLOR FOR NSTC AND PAL SIGNAL 4 2 WHITE BALANCE ADJUSTMENT NORMAL 8 5 ADJUSTMENT OF SUB BRIGHTNESS 8 6 PICTURE GEOMETRIC ADJUSTMENT 8 7 X RAYS OVER VOLTAGE PROTECTING CIRCUIT T...

Page 11: ...arameter you want to adjust Press VOL VOL to change the parameters To quit factory mode press D MODE button on the right of SURR button the factory data changed will be memorized A few special modes A...

Page 12: ...Apply 8 scale gray signal 80dB and then adjust AGC data in D mode until the synchronization signal distortion appear exactly Test Pin 1 of TU101 IF output and record the voltage value as V2P P Illustr...

Page 13: ...2 0V P P as shown below 4 Select COLC to adjust the color by tuning the amplitude of a and d to the same 5 Select TNTCV T to adjust the tint by tuning the amplitude of b and c to the same 6 Apply the...

Page 14: ...C BD C for cool temperature into memory 5 Adjustment of Sub brightness Apply the Grey scale Color bar NTSC signal to the AV input in normal status Enter factory alignment menu 8 Select BRTS to adjust...

Page 15: ...r it is disqualification 9 PS power test Random test Instruments Power meter Input signal pattern Color bar Sound 1KHZ 100 modulation Input signal intensity 60dBuv 1 Mv rms Test points find the graphi...

Page 16: ...to the 2 ends of CRT glowers test the heater voltage of highest CR and Brightness It should meet 6 3 0 3Vrms 12 CCD and VOL CHIP function test VOL CHIP and CCD function test please find the service ma...

Page 17: ...T3 SV3 SV4 SVD ASSH SHPX SHPN M123SP 1B 1B 1B 1B 07 1A 1A 20E10 1B 1B 1B 1B 07 1A 1A FAC 07 Data Model MOD1 MOD2 MOD3 OPT OPTM1 OPTM2 HDCNT HSTOP M123SP 60 F3 88 37 C2 83 09 FF 20E10 60 F1 88 37 C2 83...

Page 18: ...2 Data Model SVM SVM1 OSD2 OSDF2 PYNX PYNN PYXS PYNS M123SP 10 10 20 64 28 18 22 10 20E10 10 10 20 64 28 18 22 10 FAC 13 Data Model CLTM CLVO CLVS ABL DCBS FLG0 FLG1 M123SP 04 03 03 27 14 82 0C 20E10...

Page 19: ...AI GATE VOL OUT AV GAIN OPTM3 M123SP 03 2A 75 2D 40 20E10 03 2A 75 2D 40 FAC 25 Data Model G2_FLAG00 G2_FLAG01 G2_FLAG02 G2_FLAG03 G2_FLAG04 G2_FLAG05 M123SP 30 06 00 02 40 00 20E10 30 06 00 02 40 00...

Page 20: ...M123SP...

Page 21: ...ains 8 bit CPU ROM RAM I O ports timer counters A D converters an on screen display controller remote control interfaces IIC bus interfaces and the Closed Caption decoder The TV signal processor conta...

Page 22: ...lumns 12 lines Composition 16 18 dots Size of character 3 line by line Color of character 8 character by character Display position H 256 V 512 steps BOX function Fringing smoothing Italic underline f...

Page 23: ...t SIF out Sync out H L out AU Monitor out ALC filter A Vcc 8V YC Vcc 5V AU out 2 P20 Int5 Stop P40 PWM14bit Reset P50 PWM7bit TC2 Int0 TV AGND 6dB PIF Proc PAL NTSC demod Auto VCO alignment Vert Proc...

Page 24: ...om MCU are controllable through the IIC bus of the internal connections 2 Power Supply TMPA8873 has some power supplies and GND pins Power supplies related MCU must be applied at the first Power suppl...

Page 25: ...4 I O Input Input Key on wake up input A D converter analog input 2 9 4 1k 5k Key on Wake up 22pF Disable Initial Hi Z 3 P53 KWU0 AIN0 TC1 INT2 SCK1 I O Input Input Input Input I O Key on wake up inpu...

Page 26: ...9 up DVdd Power Supply Vdd Supply 5V 9 CPU core Digtal curcuit Slicer 10 up VVss Power Supply GND for Slicer circuit 54 up AGND Power Supply GND for Oscillator circuit 55 up AVdd Power Supply Vdd for...

Page 27: ...59 P50 PWM8 TC2 INT0 I O Output Input Input 7 bit D A conversion PWM output Timer Counter input External interrupt input 59 9 4 1k Disable Initial Hi Z 60 P40 PWM0 I O Output 14 12 bit D A conversion...

Page 28: ...03 29 28 Pin No Pin Name I O Function Interface Circuit 63 P30 INT3 RXIN I O Input Input External interrupt input Remote control signal preprocessor input 63 9 4 1k Disable Initial Hi Z 64 P63 LED2 I...

Page 29: ...FC 1 Terminal to be connected capacitor for H AFC filter This terminal voltage controls H VCO frequency 100 300 14 17 11 33k 15 V saw Terminal to be connected capacitor to generate V saw signal V saw...

Page 30: ...22 Ext Au1 Input terminal for Audio signal 1 17 22 18 35k 35k 5k 200 23 C in Input terminal for Chroma signal 23 47 18 1 5k 40k 24 V2 in Input terminal for Video signal 24 47 18 11k 1 5k 1 5k 25 ALC f...

Page 31: ...for 1bit DAC or detected SIF signal 36 40 31 32 Ext Au2 in Input terminal for Audio signal 1 17 32 18 35k 35k 5k 200 33 H correc SIF in Input terminal for H correction and 2nd SIF 33 36 40 500 70k 30...

Page 32: ...ND GND terminal for IF circuit 41 42 IF in Input terminals for IF signals Pin41 and Pin42 are both input poles of differential amplifier 50k 20pF 1 4k 50k 20pF 1 4k 41 42 36 40 43 RF AGC Output termin...

Page 33: ...s required because of its open collector output Pull up resister minimum 4 7kohm 11 17 48 100 5k 49 DVCC Vcc terminal for Digital block This terminal voltage is clipped about 3 3V by regulator circuit...

Page 34: ...p Filter A sound trap filter is integrated on the chip for multi frequency SIF systems The sound trap filter characteristics are changed by WRITE BUS register setting It is better that the setting dat...

Page 35: ...ection The 1 H delay line is integrated on the chip for PAL chroma demodulation The 1 H delay line can acts as a chroma comb filter on NTSC chroma system 10 Base Band Color System TMPA8873 features a...

Page 36: ...each other at the same time is recommended 14 Control the Signal Processor The signal processor is connected with the micro controller by means of internal wiring All functions of the signal processo...

Page 37: ...6 PCB Layout...

Page 38: ......

Page 39: ...DIODE FR104 FAST RECTIFIER 0 005 PC 10 0FR104 FBX DIODE FR104 FAST RECTIFIER 0 005 PC 10 0FR104 FBX DIODE FR104 FAST RECTIFIER 0 005 PC 10 0FR104 FBX DIODE FR104 FAST RECTIFIER 0 005 PC 10 0FR104 FBX...

Page 40: ...YBX TRANSISTOR 2SC1815 Y NPN 0 005 PC 11 SC1815 YBX TRANSISTOR 2SC1815 Y NPN 0 005 PC 11 SC1815 YBX TRANSISTOR 2SC1815 Y NPN 0 005 PC 11 SD2012 0CX TRANSISTOR 2SD2012 0 005 PC 11 SK2645 0AX TRANSISTOR...

Page 41: ...74 279070 50C EPE BOARD 580MMX440MMX5MM 0 004 PC FOR REAR CABINET 74 344780 50C EPE BOARD 900MMX400MMX5MM 0 021 PC FOR REAR CABINET 76 001497 0AF CARTON BOX LWH 640X460X360MM 0 001 PC FOR OTHER 76 00...

Page 42: ...P 0 33 UF 250V 5 1 PC C421 27 ALR123 J0X CAP M PP 0 012 UF 1 6KV 5 1 PC C406B 27 LCA104 J0X CAP P E 0 1UF 100V 5 1 PC C234 36 HDR029 XX0 TRANSFORMER HOR DRIVE BCT 1012A 1 PC T401 36 LIN580 XX1 COIL LI...

Page 43: ...PC T803 46 10962W 02XG PIN BASE 2 TJC2 2A 1 PC P803 50 03150D 1GS1G TCL50 03150D 1GS1G FUSE 3 15AT 250VAC 5 1 PC F801 63 B30100 AB4G S T SCREW B 3 X 10 AB 1 PC FOR Q815 64 P30080 104G M C SCREW P 3 X...

Page 44: ...UI9F TV DEC OVERLAY REAR AV 12 00 R N 1 PC 58 DA71SI 2UI9K TV PRI OVERLAY SIDE AV 21A71 BK 02 00 R 1 PC 63 B40200 AB2G S T SCREW B 4 X 20 AB 7 PC MTG FRONT REAR CAB 63 F30100 BT3G S T SCREW F 3 X 10 B...

Page 45: ...USE 71 270870 0A9 LABEL 2 PC 90 0DSTG1 SR1U HEAT SINK DSTG 1 1 G FOR Q801 90 269080 ZU0U CLEAN COATING TC 131L 14KG BARREL 0 1 G 10 0FR104 FBX DIODE FR104 FAST RECTIFIER 1 PC D401 10 0FR104 FBX DIODE...

Page 46: ...4 25 BCB100 M1X CAP ELEC 10 UF 16V 20 1 PC C907 25 BCB100 M1X CAP ELEC 10 UF 16V 20 1 PC C242 25 BCB100 M1X CAP ELEC 10 UF 16V 20 1 PC C901 25 BCB100 M1X CAP ELEC 10 UF 16V 20 1 PC C908 25 BCB100 M1X...

Page 47: ...X CAP CER 390 PF 500V 10 B 1 PC C403 26 AIC391 KBX CAP CER 390 PF 500V 10 B 1 PC C409 26 EBP680 JZX CAP CER 68PF 50V 5 SL TUBE 1 PC FOR J405 27 MBC104 J0X CAP M P E 0 1 UF 63V 5 1 PC C305 27 MBC223 J0...

Page 48: ...909 41 WJ0100 B00 WIREBAREJUMPER10MM 1 PC J912 41 WJ0100 B00 WIREBAREJUMPER10MM 1 PC J011 41 WJ0100 B00 WIREBAREJUMPER10MM 1 PC J916 41 WJ0100 B00 WIREBAREJUMPER10MM 1 PC J305 41 WJ0100 B00 WIREBAREJU...

Page 49: ...CB100 M1X CAP ELEC 10 UF 16V 20 1 PC C1015 25 BCB100 M1X CAP ELEC 10 UF 16V 20 1 PC C1013 25 BCB100 M1X CAP ELEC 10 UF 16V 20 1 PC C1009 25 BCB220 M1X CAP ELEC 22 UF 16V 20 1 PC C1042 25 BCB470 M1X CA...

Page 50: ...1 KBX CAP CER 220 PF 500V 10 B 1 PC C841 35 LB1005 0IX FERR BEAD H75 3 5X1X5 1 PC L840 35 LB1005 0IX FERR BEAD H75 3 5X1X5 1 PC L815 41 WJ0075 B00 WIREBAREJUMPER7 5MM 1 PC J806 41 WJ0075 B00 WIREBAREJ...

Page 51: ...815 YBX TRANSISTOR 2SC1815 Y NPN 1 PC Q1026 11 SC1815 YBX TRANSISTOR 2SC1815 Y NPN 1 PC Q1024 11 SC1815 YBX TRANSISTOR 2SC1815 Y NPN 1 PC Q1023 11 SC1815 YBX TRANSISTOR 2SC1815 Y NPN 1 PC Q1022 18 CB0...

Page 52: ...C857A PNP 0 PC Q003 12 BC857A 0BX SMD TRANSISTOR BC857A PNP 0 PC Q207 12 BC857A 0BX SMD TRANSISTOR BC857A PNP 0 PC Q210 12 BC857A 0BX SMD TRANSISTOR BC857A PNP 0 PC Q603 12 BC857A 0BX SMD TRANSISTOR B...

Page 53: ...21 JTX RES SMD 220 OHM 1 10W 0603 0 PC R201 19 AB0221 JTX RES SMD 220 OHM 1 10W 0603 0 PC R202 19 AB0222 JTX RES SMD 2 2K OHM 1 10W 0603 0 PC R015 19 AB0223 JTX SMD RES 22K OHM 1 10W 5 0603 0 PC R215...

Page 54: ...614 28 AB0270 JCX SMD CAP 27 PF 50V 5 0603 0 PC C011 28 AB0300 JCX SMD CAP 30 PF 50V 5 0603 0 PC C022 28 AB0300 JCX SMD CAP 30 PF 50V 5 0603 0 PC C021 28 AB0472 KBX CAP SMD 4700PF 50V 10 0603 0 PC C61...

Page 55: ...D 1K OHM 1 10W 0603 0 PC R844 19 AB0103 JTX RES SMD 10K OHM 1 10W 0603 0 PC R841 19 AB0103 JTX RES SMD 10K OHM 1 10W 0603 0 PC R825 19 AB0122 JTX SMD RES 1 2K OHM 1 10 J 0603 0 PC R811 19 AB0202 FTX S...

Page 56: ...R523 19 AB0751 JTX SMD RES 750 OHM 1 10W 0603 0 PC R503 19 AB0751 JTX SMD RES 750 OHM 1 10W 0603 0 PC R506 19 AB0751 JTX SMD RES 750 OHM 1 10W 0603 0 PC R509 28 AB0103 KBX SMD CAP 0 01 UF 50V 10 0603...