TCL
SERVICE MANUAL
21A71A
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Caution
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Specification
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Alignment Procedure
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Schematic Diagram
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IC Brief Introduction
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PCB Layout
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Explode View Diagram
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BOM list
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This manual is the latest at the time of printing, and does not
include the modification which may be made after the printing, by
the constant improvement of product
Summary of 21A71A
Page 1
Tcl service manual 21a71a 1 、 caution ……………………………………………………………………… 2 2 、 specification ………………………………………………………………… 6 3 、 alignment procedure ……………… ………………………………… … 10 4 、 schematic diagram ………………………… ……… …………………… 20 5 、 ic brief introduction ……………………………………………………… 21 6 、 pcb layout ………………………………………………………...
Page 2: Caution
Warning: to reduce risk of fire or electric shock, do not expose this appliance to rain or moisture. Ca ution: to reduce the risk of electrical shock, do not remove cover (or back). No user serviceable par ts inside. Refer ser vicing to qualified service personnel. The lighting flash with arrowhead ...
Page 3: For Your Personal Safety
3 for your personal safety 1. When the power cord or plug is damaged or frayed, unplug this television set from the wall outlet and refer servicing to qualified service personnel. 2. Do not overload wall outlets and extension cords as this can result in fire or electric shock. 3. Do not allow anythi...
Page 4
4 protection and location of your set 11. Do not use this television set near water ... For example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, etc. Never expose the set to rain or water. If the set has been exposed to rain or water, unplug th...
Page 5: Operation Of Your Set
Operation of your set 18. This television set should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply at your home, consult your television dealer or local power company. For television sets designed to operate from batter...
Page 6
Model 机型 item 内容 master data 主要数据 -customer id - 顾客 id -destination - 目的地 南美 -brand - 牌子 -bom no. -bom 号 -assembling way - 走货方式 unit -chassis - 机芯号 m123sp reception 接收 -tuning [channels amt.] - 频道数量 181 -tuning [technology] - 调谐技术 pll -tuning [indication] - 搜台指示 --------- -frequency bands - 频率波段 ful...
Page 7
Tcl-thomson electronics r d center (shen’zhen lab) model 机型 item 内容 -america sap - 美国 sap x -korea stereo - 韩国立体声 -thai bilingual - 泰国双语 -super woofer - 超重低音 -avl - 自动音量平衡 -sound control [general] - 声音控制（普通的） volume 音量 x mute 静音 x -sound control [special] - 声音控制（特殊的） treble 高音 x bass 低音 x balance 平衡...
Page 8
Tcl-thomson electronics r d center (shen’zhen lab) model 机型 item 内容 -number of local control(incl.Mains) - 本机控制按键孔数量 ( 包括主开关 ) 7 -number of indicator control(incl.Mains) - 本机指示灯数量 ( 包括主开关上的灯 ) 1 local controls front - 正面的控制孔数量 -mains switch 电源开关 x -ch+ ch- vol+ vol- 频道 +- ，音量 +- -tv/av tv / av -menu...
Page 9
Tcl-thomson electronics r d center (shen’zhen lab) model 机型 item 内容 carton color 纸箱颜色 -documents and manuals - 文件和手册 instruction book 说明书 x screen sticker 屏幕贴纸 plastic bag 塑料袋 warranty card 保修卡 guarantee doc. 保证书 warning label 警告标签 x approbation label 认证标签 others 其他 -languages instruction book - 说明书...
Page 10: Table of Content
Chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 4 of 13 updated on 2006-07-29 version 2.0 table of content Ⅰ . Summarize........................................................................................................................... 5 Ⅱ . Alignment contents ： ..................
Page 11
Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 5 of 13 updated on 2006-07-29 version 2.0 m123sp alignment procedure Ⅰ . Summarize m123sp ， is ntsc-pal system model developed for tcl market specially. In trial run, burn the software to...
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Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 6 of 13 updated on 2006-07-29 version 2.0 Ⅱ . Alignment contents ： 1. Adjustment of b+ voltage receive philips standard testing pattern to rf input. If the vr800 exists in the board, adju...
Page 13
Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 7 of 13 updated on 2006-07-29 version 2.0 3. Screen & focus voltage adjustment ① apply pattern signal in normal status, enter factory mode ， press “ input ” button to stop vertical scan. ...
Page 14
Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 8 of 13 updated on 2006-07-29 version 2.0 equipment, white balance can be adjusted automatically as following: press “bus off” button under factory mode, the tv set will adjust automatica...
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Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 9 of 13 updated on 2006-07-29 version 2.0 8. Ps line polartities test : connect follow the graphic below ： dx 2.2k ps socket m to f801 plug the ps line onto the ps socket m, then touch an...
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Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 10 of 13 updated on 2006-07-29 version 2.0 10. High voltage and ib value limit test( random test ) instruments ： high voltage meter ， ib meter. Input signal pattern ： white vertical input...
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Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 11 of 13 updated on 2006-07-29 version 2.0 fac 04 data model cntx cntn brtx brtn colx coln tntx tntn 南美 m123sp 7f 10 20 1b 7f 0e 2c 30 20e10 7f 10 20 1b 7f 0e 2c 30 fac 05 data model brtc...
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Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 12 of 13 updated on 2006-07-29 version 2.0 fac 10 data model curtcen volx pwtm mode4 mode5 mode6 mode7 mode8 mode9 南美 m123sp a5 7f 08 ff 7f 61 d7 2d ca 20e10 a5 7f 08 ff 7f 61 d7 2d ca fa...
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Tcl-thomson electronics r&d center (shen’zhen lab) chassis name m123sp 南美软件 serial no. Issued on 2006-04-29 page 13 of 13 updated on 2006-07-29 version 2.0 fac 21 data model theater-bas theater- tre concert-bas concert-tre brocast-bas brocast-tre 南美 m123sp 2d 4a 38 3e 19 2c 20e10 2d 4a 38 3e 19 2c f...
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M123sp.
Page 21: Tmpa8873Psng
2005/03/29 21 toshiba integrated circuit tmpa8873psng tmpa8873cmng /cpng /crng /csng mcu and signal processor for a pal/ntsc tv the tmpa8873cpng is an integrated circuit for a pal/ntsc tv. A mcu and a tv signal processor are integrated in a 64-pin shrink dip package. The mcu contains 8-bit cpu, rom,...
Page 22: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 22 features mcu • high speed 8-bit cpu (tlcs-870/x series) • instruction execution time: 0.5 µ s (at 8 mhz) • (tmpa8873cpng) 48-kbytes rom, 2-kbytes ram • rom correction • 12 i/o ports • 14-bit pwm output 1 ch for a voltage synthesizer • 7...
Page 23: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 33 block diagram ext au 1 + p56 p51/scl p53/adc8bit/tc1/int2 if in sa w p31/int4/tc3 p52/sda au out 1 v2 cvbs/y cr input y input cb input apc fil pif pll + if agc + black det fbp scp tv def gnd p61/led1/adc8bit p63/led2 + rf agc p60/adc8bi...
Page 24: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 24 basic structure 1. Internal connections tmpa8873 has two pieces of ic chip in one package, using multi-chip-package (mcp) technology. One is a micro controller (mcu) and the other one is a signal processor (sp) for a color tv. There are...
Page 25: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 25 terminal interface mcu block pin no. Pin name i/o function interface circuit 1 p61 (/kwu5) (ain5) (led1) i/o (input) (input) (output) key on wake up input a/d converter analog input led output 1 9 4 1kΩ 5kΩ key‑on wake‑up 22pf disable i...
Page 26: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 26 pin no. Pin name i/o function interface circuit 6 7 xout xin output input x’tal connecting pins 6 7 9 4 osc.Enable 1.2mΩ 500Ω fc 8 test input test pin for out-going test 8 9 4 1kΩ 9 up dvdd power supply vdd supply 5v - 9 cpu core digtal...
Page 27: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 27 pin no. Pin name i/o function interface circuit 58 p51 (scl) (si1) i/o (i/o) (input) iic bus serial clock input / output sio serial data input 58 9 4 1kΩ disable initial"hi‑z" open drain output enable 59 p50 (/pwm8) (tc2) (int0) i/o (ou...
Page 28: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 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 1kΩ disable initial"hi‑z" 64 p63 (led2) i/o (output) led output 64 9 4 1kΩ...
Page 29: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 29 signal processor block pin no. Pin name function interface circuit i/o signal 11 tv def agnd gnd terminal for tv def block. ⎯ ⎯ 12 fbp in input terminal for fbp. 17 11 12 200 Ω 10k Ω 13 h out output terminal for horizontal driving pulse...
Page 30: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 30 pin no. Pin name function interface circuit i/o signal 20 y in input terminal for y signal. 20 47 18 11k Ω 1.5k Ω 1.5k Ω 21 cr in input terminal for cr signal. 5k Ω 5k Ω 47 21 18 22 ext au1 input terminal for audio signal 1. 17 22 18 35...
Page 31: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 31 pin no. Pin name function interface circuit i/o signal 28 au out 1 output terminal 1 for audio signal. 17 18 28 29 au out 2 output terminal 2 for audio signal. 17 40 29 30 tv out output terminal for detected pif signal. 17 18 30 31 1bit...
Page 32: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 32 pin no. Pin name function interface circuit i/o signal 37 reg fil terminal to be connected capacitor for stabilizing internal bias. 37 17 18 5k Ω 5k Ω 38 audio monitor out output terminal for external audio signal or tv audio signal sel...
Page 33: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 33 pin no. Pin name function interface circuit i/o signal 47 yc vcc 5v vcc terminal for y/c circuit. Supply 5v. ⎯ ⎯ 48 sync out output terminal for sync pulse. A pull up resister is required because of its open collector output. (pull up r...
Page 34: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 34 signal processor descriptions 1. Tank-coil-less pif vco tmpa8873 adopts a tank-coil-less pif vco circuit, which has advantages of cost, performance of weak if input and easy to design pcb layout. The pif pll system has self-alignment ci...
Page 35: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 35 6. Av switch the audio switch has two inputs for an external audio, and one for internal demodulated audio signal. The two external audio inputs can use as audio stereo input. The switched audio signal goes into the audio attenuator, wh...
Page 36: Confidential
Confidential tmpa8873psng /cmng /cpng /crng /csng 2005/03/29 36 13. Signal detection flags there are some flags on the read bus registers. They indicate that a certain signal is detected at the moment. But reliability of a detection result is not so accurate if checking only one flag, so that confir...
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6 、 pcb layout.
Page 39
Part no. Sepc qty unit location 76-002091-0at carton box lwh 624x384x556mm 0.006 pc 76-326350-01a carton sheet 61x37x0.3cm 0.062 pc 11-0bc337-0bx transistor (npn) bc337-40 1 pc q1501 13-c73c03-02b ic sc73c0302 1 pc ic1501 14-ire05b-xx0 ir emitting diode tsal6200 1 pc d1501 18-cb0221-jnx res. C.F. 22...
Page 40
10-1n4148-abx diode 1n4148 (switching) 0.005 pc 10-1n4148-abx diode 1n4148 (switching) 0.005 pc 10-1n4148-abx diode 1n4148 (switching) 0.005 pc 10-1n4148-abx diode 1n4148 (switching) 0.005 pc 10-1n4148-abx diode 1n4148 (switching) 0.005 pc 10-1n4148-abx diode 1n4148 (switching) 0.005 pc 10-79c18v-db...
Page 41
26-aka221-krx cap. Cer 220 pf 1kv +/-10% 0.005 pc 26-akm221-krx cap. Cer 220 pf 1kv +/-10% 0.005 pc 26-amm102-kbx cap. Cer 1000 pf 2kv +/-10% b 0.005 pc 26-amm561-krx cap. Cer 560pf 2kv +/-10% 0.005 pc 26-apk222-mex cap. Cer 2200pf 400vac+/-20% e 0.005 pc 26-apk471-kbx cap. Cer 470pf 400vac +/-10% b...
Page 42
T8-hs36r3-m123a m123sp remote handset ass'y(w/msp) 1 pc 10-cw574c-djx diode cw574cd 1 pc d101 11-4508dz-0cx transistor bu450dz 1 pc q402 13-tda486-4as ic tda4864aj 1 pc ic301 13-tea202-5bp ic tea2025b2x2w 1 pc ic601 18-ee0109-js2 res. Fus. 1 ohm 1/2w +/-5% 1 pc r405 18-ee0109-js2 res. Fus. 1 ohm 1/2...
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18-kf0825-jhx res. Glass glaze 8.2m ohm 1w 1 pc r829 18-rg0108-jhx res. Wire round 0.1 ohm 2w +/-5% 1 pc r815 22-ntc479-xx0 ntc 4.7 ohm +/-18% ntc4.7d2-14 1 pc r803 22-ptc909-3a5 ptc 9 ohm 1 pc rt801 25-bda222-m1s cap. Elec 25v/2200uf/+/-20% 1 pc c843 25-bmj151-m1x cap. Elec 150 uf 400v +/-20% 1 pc ...
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57-fgpa71-xx2 shine aureole 1 pc 59-312160-000 speaker rubber cushion 8 pc mtg spk 63-b30100-ab4g s/t screw b 3 x 10 ab 4 pc mtg key bd & push button 63-b30100-ab4g s/t screw b 3 x 10 ab 2 pc mtg key bd & f. Cab. 63-b40150-ab4g s/t screw b 4 x 15 ab 12 pc mtg crt metal & front cabinet 63-w30080-ab4g...
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47-rca003-xx0g rca socket av-8.4-6 (yellow) 1 pc p1101 47-rca017-xx0g rca jack red (rca-101p) (three feet) 1 pc p1103 02-irr001-xx1s tcl02-irr001-xx1s= 02-irr001-xx1s = ir r 1 pc ir1101 46-31788h-02xg hs 2p22 350 tjc3-2y/scn-2y 1 pc p1101c for m. Bd p001 46-33079w-04xg pin base *4 tjc3-4a 1 pc p1101...
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10-79c5v1-dbx diode zener 5v1 1/2w 5% 1 pc d216 10-79c6v2-dbx diode zener 6v2 1/2w 5% 1 pc d207 10-79c8v2-dbx diode zener 8v2 1/2w 5% 1 pc +to gnd,""-""to j405&r406" 11-ktd863-0bx transistor ktd863 1 pc q401 18-cb0101-jnx res. C.F. 100 ohm 1/6w +/-5% 1 pc r009 18-cb0102-jnx res. C.F. 1k ohm 1/6w +/-...
Page 47
25-bdb102-m1x cap.Elec 1000uf 25v+/-20%13*22 1 pc c413 25-bdb470-m1x cap. Elec 47 uf 25v +/-20% 1 pc c419 25-beb100-m1x cap. Elec 10 uf 35v +/-20% 1 pc c441 25-beb101-m1x cap. Elec 100 uf 35v +/-20% 1 pc c302 25-bfb101-m1x cap. Elec 100 uf 50v +/-20% 1 pc c106 25-bfb109-m1x cap. Elec 1 uf 50v +/-20%...
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41-wj0075-b00 wirebarejumper7.5mm 1 pc j903 41-wj0075-b00 wirebarejumper7.5mm 1 pc j913 41-wj0075-b00 wirebarejumper7.5mm 1 pc j920 41-wj0075-b00 wirebarejumper7.5mm 1 pc j201 41-wj0075-b00 wirebarejumper7.5mm 1 pc j005 41-wj0075-b00 wirebarejumper7.5mm 1 pc j021 41-wj0075-b00 wirebarejumper7.5mm 1 ...
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41-wj0150-b00 wirebarejumper15mm 1 pc r027 41-wj0150-b00 wirebarejumper15mm 1 pc j008 41-wj0150-b00 wirebarejumper15mm 1 pc j102 41-wj0150-b00 wirebarejumper15mm 1 pc j215 41-wj0150-b00 wirebarejumper15mm 1 pc j412 41-wj0150-b00 wirebarejumper15mm 1 pc j908 41-wj0150-b00 wirebarejumper15mm 1 pc j100...
Page 50
10-1n4148-abx diode 1n4148 (switching) 1 pc d814 10-1n4148-abx diode 1n4148 (switching) 1 pc d819 10-79c18v-dbx diode zener 18v 1/2w 5% 1 pc d821 10-79c7v5-dbx tcl10-79c7v5-dbx= diode zener 7v5 1/2w 5 1 pc d844 11-ca8550-dbx transistor 8550d-to-92(pnp) 1 pc q846 11-sa1015-ybx transistor st2sa1015y (...
Page 51
41-wj0075-b00 wirebarejumper7.5mm 1 pc j917 10-1n4004-ebx diode in4004 (rectifier) 1 pc d504 10-1n4148-abx diode 1n4148 (switching) 1 pc d501 10-1n4148-abx diode 1n4148 (switching) 1 pc d502 11-sa1015-ybx transistor st2sa1015y (pnp) 1 pc q510 11-tc3207-0bx transistor ktc3207 1 pc q503 11-tc3207-0bx ...
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41-wj0060-b00 wirebarejumper6mm 1 pc r1103 41-wj0060-b00 wirebarejumper6mm 1 pc r1115 41-wj0090-b00 wire bare jumper 9mm 1 pc j1105 66-382330-0b7 rivet 2.0x3.7x3.5 2 pc for p802 66-382330-0b7 rivet 2.0x3.7x3.5 2 pc for p801 41-wj0080-b00 wirebarejumper8mm 1 pc jp801 41-wj0080-b00 wirebarejumper8mm 1...
Page 53
19-ab0102-jtx res smd 1k ohm 1/10w 0603 0 pc r901 19-ab0102-jtx res smd 1k ohm 1/10w 0603 0 pc r609 19-ab0102-jtx res smd 1k ohm 1/10w 0603 0 pc r920 19-ab0102-jtx res smd 1k ohm 1/10w 0603 0 pc r922 19-ab0102-jtx res smd 1k ohm 1/10w 0603 0 pc r013 19-ab0102-jtx res smd 1k ohm 1/10w 0603 0 pc r606 ...
Page 54
28-ab0101-jcx smd. Cap 100 pf 50vdc +/-5% 0 pc c002 28-ab0101-jcx smd. Cap 100 pf 50vdc +/-5% 0 pc c103 28-ab0101-jcx smd. Cap 100 pf 50vdc +/-5% 0 pc c107 28-ab0101-jcx smd. Cap 100 pf 50vdc +/-5% 0 pc c001 28-ab0102-kbx smd. Cap 1000 pf 50v +/-10% b 0 pc c219 28-ab0103-kbx smd. Cap 0.01 uf 50v +/-...
Page 55
28-ab0103-kbx smd. Cap 0.01 uf 50v +/-10% 0603 0 pc c1033 28-ab0103-kbx smd. Cap 0.01 uf 50v +/-10% 0603 0 pc c1031 28-ab0103-kbx smd. Cap 0.01 uf 50v +/-10% 0603 0 pc c1011 28-ab0104-kbx smd. Cap 50vdc 0.1uf +/-10% 06 0 pc c1012 28-ab0104-kbx smd. Cap 50vdc 0.1uf +/-10% 06 0 pc c1008 28-ab0104-kbx ...
Page 56
28-ab0473-kbx smd cap 0.047uf 50v +/-10%0603 0 pc c811 12-bc847a-0bx smd transistor bc847a (npn) 0 pc q951 19-ab0103-jtx res smd 10k ohm 1/10w 0603 0 pc r911 19-ab0103-jtx res smd 10k ohm 1/10w 0603 0 pc r952 19-ab0472-jtx res smd 4.7k ohm 1/10w 0603 0 pc r900 28-ab0102-kbx smd. Cap 1000 pf 50v +/-1...