THOMSON TCL 21A71A Service Manual
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THOMSON TCL 21A71A Service Manual

THOMSON TCL 21A71A Service Manual

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SERVICE MANUAL
1、 Caution.................................................................................2
2、 Specification...........................................................................6
3、 Alignment Procedure.................. ....................................... ...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 which may be made after the printing, by
the constant improvement of product
TCL
21A71A

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  • Page 1: Table Of Contents

    All manuals and user guides at all-guides.com 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…………………………………………………………………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 which may be made after the printing, by the constant improvement of product...

  • Page 2: 1、 Caution

    All manuals and user guides at all-guides.com 1、 CAUTION: Use of controls, adjustments or procedures other than those specified herein may result in hazardous radiation exposure. CA UTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE CAUTION COVER (OR BACK). NO USER SERVICEABLE RISK RISK OF OF ELECTRI...
  • Page 3 All manuals and user guides at all-guides.com IMPORTANT SAFETY INSTRUCTIONS CAUTION: Read all of these instructions. Save these instructions for later use. Follow all Warnings and Instructions marked on the audio equipment. 1. Read Instructions- All the safety and operating instructions should be read before the product is operated. 2.
  • Page 4 All manuals and user guides at all-guides.com PROTECTION AND LOCATION OF YOUR SET 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.
  • Page 5 All manuals and user guides at all-guides.com 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 battery power, refer to the operating instructions.

  • Page 6: 2、 Specification

    All manuals and user guides at all-guides.com 2、 Specification Model 机型 Item 内容 主要数据 Master Data -Customer ID -顾客ID 南美 -Destination -目的地 SOUTH AMERICA -Brand -牌子 -BOM NO. -BOM号 -Assembling Way Unit -走货方式 -Chassis M123SP -机芯号 接收 Reception -Tuning [Channels Amt.] -频道数量...
  • Page 7 All manuals and user guides at all-guides.com TCL-Thomson Electronics R D Center (Shen’Zhen Lab) Model 机型 Item 内容 -America SAP -美国SAP -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） 音量 Volume 静音 Mute -Sound Control [Special] -声音控制（特殊的）...
  • Page 8 All manuals and user guides at all-guides.com 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) -Number of Indicator Control(incl.Mains) -本机指示灯数量(包括主开关上的灯) Local Controls Front -正面的控制孔数量 电源开关 -Mains Switch 频道+-，音量+- -CH+ CH- VOL+ VOL-...
  • Page 9 All manuals and user guides at all-guides.com 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 说明书 Instruction Book 屏幕贴纸 Screen Sticker 塑料袋 Plastic Bag 保修卡 Warranty Card 保证书 Guarantee Doc.

  • Page 10: 3、 Alignment Procedure

    All manuals and user guides at all-guides.com 3、 Alignment Procedure Table of Content Ⅰ. SUMMARIZE........................... 5 Ⅱ. ALIGNMENT CONTENTS： ....................6 1. A ....................6 DJUSTMENT OF VOLTAGE 2. RF AGC ......................6 ADJUSTMENT 3. S & F ................7 CREEN OCUS VOLTAGE ADJUSTMENT 4.

  • Page 11: Ⅰ. Summarize

    All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) M123SP Alignment Procedure Ⅰ. Summarize M123SP，is NTSC-PAL system model developed for TCL market specially. In trial run, burn the software to TMPA8873PSNG IC by OTP method. After the trial run, make the mask，please take care in production.

  • Page 12: Ⅱ. Alignment Contents

    All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) Ⅱ. Alignment contents： 1. Adjustment of B+ voltage Receive Philips standard testing pattern to RF input. If the VR800 exists in the board, adjust it in STANDARD mode until voltage at following value：...

  • Page 13: Screen & Focus Voltage Adjustment

    All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) 3. Screen & Focus voltage adjustment ① Apply pattern signal in normal status, enter Factory mode，press“INPUT” button to stop vertical scan. Note：(the RC/GC/BC is preset to be 40，GD/BD is 40）...

  • Page 14: White Balance Adjustment (Normal)

    All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) equipment, white balance can be adjusted automatically as following: Press “BUS OFF” button under factory mode, the TV set will adjust automatically. standard： Warm X=310+8, Y=314+8 Cool...

  • Page 15: Ps Line Polartities Test

    All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) 8. PS line polartities test : Connect follow the graphic below： DC PS Sound reminder 2.2k PS socket M TO F801 Plug the PS line onto the PS socket M, then touch any pin of F801 with the probe, the LED DX will shine at the moment, with sound reminder, or it is disqualification.

  • Page 16: High Voltage And Ib Value Limit Test( Random Test )

    All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) 10. High voltage and Ib value limit test( random test ) Instruments： High voltage meter， Ib meter. Input signal pattern： White vertical Input signal intensity： 60dBuv (1 Mv rms) Test means：...
  • Page 17 All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) FAC 03 Data STRAP Model BLACK* BLACK* STRAP F0 SIF FREQ HL QG PIF FREQ HPOS6 HPOS5 南美 M123SP 20E10 Data FAC 04 Model CNTX CNTN BRTX...
  • Page 18 All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) Data FAC 10 Model CURTCEN VOLX PWTM MODE4 MODE5 MODE6 MODE7 MODE8 MODE9 南美 M123SP 20E10 Data FAC 11 Model CON1 CON2 CON3 STSADJ ALI 1 ALI 2 ALI3 南美...
  • Page 19 All manuals and user guides at all-guides.com TCL-THOMSON Electronics R&D Center (Shen’Zhen Lab) Data FAC 18 FAC 19 Model S-COL S-BRI S-CON S-SHP M-COL M-BRI M-CON M-SHP 南美 M123SP 20E10 Data FAC 20 Model SEG-POINT1 SEG-POINT2 DATA-VL DATA-VH DATA-UF SPE-POS1 SPE-DATA1 SENSI-ON SENSI-OFF 南美...

  • Page 20: 4、 Schematic Diagram

    All manuals and user guides at all-guides.com M123SP...

  • Page 21: 5、 Ic Brief Introduction

    All manuals and user guides at all-guides.com 5、 IC Brief Introduction 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.
  • Page 22 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Features CCD Decoder • High speed 8-bit CPU (TLCS-870/X series) • Digital data slicer for NTSC • Instruction execution time: 0.5 µs (at 8 MHz) • (TMPA8873CPNG) Clock generation for OSD display •...
  • Page 23 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Block Diagram P61/LED1/ADC8bit P63/LED2 P60/ADC8bit P30/Int3/RXIN P53/ADC8bit/TC1/Int2 P31/Int4/TC3 uP DVss P20/Int5/Stop Reset P40/PWM14bit P50/PWM7bit/TC2/Int0 P51/SCL TEST P52/SDA uP DVDD 5V uP VVss uP AVdd 5V TV DEF GND uP MPAGND TV Dig GND Hout...
  • Page 24 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG 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 some internal connections between these two ICs for handling below signals.
  • Page 25 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG TERMINAL INTERFACE MCU BLOCK Pin Name Function Interface Circuit Key‑on Wake‑up 5kΩ (/KWU5) (Input) Key on wake up input (AIN5) (Input) A/D converter analog input Initial"Hi‑Z" (LED1) (Output) LED output Disable...
  • Page 26 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Pin Name Function Interface Circuit Osc.enable 500Ω Xout Output X’tal connecting pins Input 1.2MΩ 1kΩ TEST Input Test pin for out-going test CPU core Power Digtal curcuit up DVdd Supply Supply 5V Slicer...
  • Page 27 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Pin Name Function Interface Circuit Initial"Hi‑Z" Open drain (SCL) (I/O) IIC bus serial clock input / output output enable SIO serial data input (SI1) (Input) Disable Initial"Hi‑Z" (/PWM8) (Output) 7-bit D/A conversion (PWM) output (TC2)
  • Page 28 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Pin Name Function Interface Circuit Initial"Hi‑Z" External interrupt input (INT3) (Input) Remote control signal (RXIN) (Input) preprocessor input Disable (LED2) (Output) LED output Initial"Hi‑Z" Disable 2005/03/29...
  • Page 29 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG SIGNAL PROCESSOR BLOCK Pin Name Function Interface Circuit I/O Signal TV DEF GND terminal for TV DEF ⎯ ⎯ AGND block. FBP in Input terminal for FBP. 200Ω...
  • Page 30 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Pin Name Function Interface Circuit I/O Signal 1.5kΩ Y in Input terminal for Y signal. 1.5kΩ 11kΩ 5kΩ Cr in Input terminal for Cr signal. 5kΩ 35kΩ Input terminal for Audio Ext Au1 signal 1.
  • Page 31 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Pin Name Function Interface Circuit I/O Signal Output terminal 1 for Audio Au out 1 signal. Output terminal 2 for Audio Au out 2 signal. Output terminal for detected TV out PIF signal.
  • Page 32 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Pin Name Function Interface Circuit I/O Signal Terminal to be connected 5kΩ Reg Fil capacitor for stabilizing 5kΩ internal bias. Output terminal for External AUDIO audio signal or TV audio Monitor out signal selected by BUS (Audio SW).
  • Page 33 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG Pin Name Function Interface Circuit I/O Signal Vcc terminal for Y/C circuit. ⎯ ⎯ YC Vcc 5V Supply 5V. Output terminal for Sync pulse. A pull up resister is required 5kΩ...
  • Page 34 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG 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 circuit, so that the micro controller needs only to order the PIF PLL system to start self-alignment through the IIC bus.
  • Page 35 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG 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, which has controllability of audio gain from 0dB to –80dB or less with near log curve characteristic.
  • Page 36 All manuals and user guides at all-guides.com Confidential TMPA8873PSNG /CMNG /CPNG /CRNG /CSNG 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 confirming several flags, which means similar result by each other, at the same time is recommended.

  • Page 37: 6、 Pcb Layout

    All manuals and user guides at all-guides.com 6、 PCB Layout...

  • Page 38: 7、 Explode View Diagram

    All manuals and user guides at all-guides.com...

  • Page 39: 8、 Bom List

    All manuals and user guides at all-guides.com PART NO. SEPC 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...
  • Page 40 All manuals and user guides at all-guides.com 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-DBX DIODE ZENER 18V 1/2W 5%...
  • Page 41 All manuals and user guides at all-guides.com 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.
  • Page 42 All manuals and user guides at all-guides.com 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...
  • Page 43 All manuals and user guides at all-guides.com 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...
  • Page 44 All manuals and user guides at all-guides.com 57-FGPA71-XX2 SHINE AUREOLE 1 PC 59-312160-000 SPEAKER RUBBER CUSHION 8 PC MTG SPK MTG KEY BD & PUSH 63-B30100-AB4G S/T SCREW B 3 X 10 AB 4 PC BUTTON 63-B30100-AB4G S/T SCREW B 3 X 10 AB 2 PC MTG KEY BD &...
  • Page 45 All manuals and user guides at all-guides.com 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 P1101C FOR M. BD 46-31788H-02XG HS 2P22 350 TJC3-2Y/SCN-2Y 1 PC P001 P1101E FOR KEY BD...
  • Page 46 All manuals and user guides at all-guides.com 10-79C5V1-DBX DIODE ZENER 5V1 1/2W 5% 1 PC D216 10-79C6V2-DBX DIODE ZENER 6V2 1/2W 5% 1 PC D207 +TO GND,""-""TO 10-79C8V2-DBX DIODE ZENER 8V2 1/2W 5% 1 PC J405&R406" 11-KTD863-0BX TRANSISTOR KTD863 1 PC Q401 18-CB0101-JNX RES.
  • Page 47 All manuals and user guides at all-guides.com 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...
  • Page 48 All manuals and user guides at all-guides.com 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 PC J911 41-WJ0075-B00 WIREBAREJUMPER7.5MM...
  • Page 49 All manuals and user guides at all-guides.com 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 J1002 41-WJ0150-B00 WIREBAREJUMPER15MM...
  • Page 50 All manuals and user guides at all-guides.com 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...
  • Page 51 All manuals and user guides at all-guides.com 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...
  • Page 52 All manuals and user guides at all-guides.com 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...
  • Page 53 All manuals and user guides at all-guides.com 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...
  • Page 54 All manuals and user guides at all-guides.com 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...
  • Page 55 All manuals and user guides at all-guides.com 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.
  • Page 56 All manuals and user guides at all-guides.com 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...

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