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LG 23LS7D Service Manual
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LG 23LS7D Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LJ71A
MODEL : 23LS7D
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
23LS7D-JA

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Summary of Contents for LG 23LS7D

  • Page 1 LCD TV SERVICE MANUAL CHASSIS : LJ71A MODEL : 23LS7D 23LS7D-JA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................ 3 SPECIFICATION ..................4 ADJUSTMENT INSTRUCTION ............... 7 TROUBLE SHOOTING ................11 WIRING DIAGRAM ................17 BLOCK DIAGRAM ................. 18 EXPLODED VIEW .................. 20 REPLACEMENT PARTS LIST .............. 22 SVC. SHEET ....................- 2 -...

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards.

  • Page 4: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test method This specification sheet is applied to the 20”/ 23” Wide LCD (1) Performance : LGE TV test method followed Digital TV used LJ71A chassis. (2) Demanded other specification Safety : JQA Specification 2.
  • Page 5 5. Module Specification 5.1. 23”LCD Module (AUO T230XW01 V3) Item Typ. Unit Remark Display area 508.152 (H) x 285.696 (V) Outline dimension 546.0 (H) x 318.3 (V) x 46.0 (D) Number of Pixels 1366 (H) x 768(V) 1Pixel=3RGB Cells Cell pitch 372 μm (H) x 372 μm (V) μm 1Pixel=3RGB Cells...
  • Page 6 6. Model Specification Item Specification Remark Analog-terrestrial Broadcasting system NTSC-M RF Input Channel VHF : 1~12 UHF : 13~62 CATV : C13~C38 Digital-terrestrial Broadcasting system ISDB-T RF Input Channel 000~999 CH. Logical CH Number Digital-BS/SC Broadcasting system ISDB-S RF Input Channel 000~999 CH.

  • Page 7: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to 20”/ 23” LCD TV which is manufactured in TV (or Monitor) Factory or is produced on the basis of this data. filexxx.bin (7) ..OK 2. Specification 1) The adjustment is according to the order which is designated and which must be followed, according to the plan which can be changed only on agreeing.
  • Page 8 4. Total Assembly line process 4.5. Power Consumption 1) Press “EYE” button on LG Adjust remocon and check 4.1. Adjustment Preparation whether LED color is amber or not. 2) Press “POWER” button on LG Ajust remocon to enter - Above 30 minutes H/run in RF no signal Stand-by mode.
  • Page 9 (If Pressed “EYE” button on LG ADJUST REMOCON, Color of Power LED will be Amber) 2) Press “IN-STOP” button on LG ADJUST REMOCON. It is executed 3~15 procedure automatically by Software program.(If pressed “IN-STOP” button, Color of “...
  • Page 10 5.2 EEPROM DATA READ (1) Signal Table Delay 100ms 128 Bytes (2) Command Set Adjustment contents CMD(hex) ADH(hex) ADL(hex) Details EEPROM READ 0-Page 0~7F Read 0-Page 80~FF Read 1-Page 0~7F Read 1-Page 80~FF Read 2-Page 0~7F Read 2-Page 80~FF Read 3-Page 0~7F Read 3-Page 80~FF Read * Purpose : To read the appointment Address of E...

  • Page 11: Trouble Shooting

    TROUBLE SHOOTING 1. No Power (LED indicator off) : [A] Process Fail Check 12V or Check short of Main B/D ST_5V of Power B/D. or Change Power B/D. Pass Fail Fail Check short of Re-soldering or Change Check Output of IC100, Q308.
  • Page 12 2. No RASTER : [B] Process Fail Check LED status Repeat A PROCESS. On Display Unit. Pass Fail Check Panel Link Change Panel Link Cable or Module. Cable or Module. Pass Fail Check Inverter Change Inverter Connector or Inverter. Connector or inverter.
  • Page 13 3. No RASTER on DTV Signal Repeat [A,B] process Pass Fail Check the input/ Check the P901. output of R918. Pass Fail Check the input/ Re-soldering or Change the defect part. output of R127. Pass Fail Check the input/ Re-soldering or change the defect part. output of IC100 Check the X100 Pass...
  • Page 14 4. No Raster on Component Signal Repeat [A, B] process. Pass Fail Check the input/ Check the J801. output of R806. Pass Fail Check Re-soldering or Change the defect part. the input/output of R121. Pass Fail Check the Re-soldering or change the input/output of IC100.
  • Page 15 5. No Raster on HDMI Signal Repeat [A, B] process. Pass Fail Re-soldering or change the Check the input/ defect part, Check the X100. output of IC100. Pass Check input source cable and jack. 6. No Raster on AV (Video, 7.
  • Page 16 8. No sound Fail Check the input Change the source input. Source. Pass Fail Re-soldering of Change the defect part. Check input/Output Check the X110 of IC100. Pass Fail Re-soldering or Change Check the input/ the defect part. output of IC500 Pass Fail Change Speaker.

  • Page 17: Wiring Diagram

    WIRING DIAGRAM - 17 -...

  • Page 18: Block Diagram

    BLOCK DIAGRAM 1. Digital - 18 -...
  • Page 19 2. Analog - 19 -...

  • Page 20: Exploded View

    EXPLODED VIEW - 20 -...
  • Page 21 Drawing,Assembly AC SOCKET AND SWITCH ASSEMBLY UL1015AWG22 EBR38656001 PCB Assembly,Sub SUB T.T LJ71A 2XLS7D-JA AJLWLAX IR/LED MES38698301 Indicator MOLD PMMA HI-855M LED 20/23LS7D-JA PMMA 8 PHY IR LENS(JAPAN) EBR36651102 Hand Insert PCB Assembly,Sub SUB M.I LJ71A 2xLS7D-JA AJLWLAX SIDE_AV ABA34844001 Bracket Assembly BRACKET 20/23LS7D-JA LJ71A BRACKET, B-CAS &...

  • Page 22: Replacement Parts List

    REPLACEMENT PARTS LIST DATE: 2007. 08. 06. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CAPACITORs C121 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+125 C122 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+125 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+125 C123 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+125...
  • Page 23 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C171 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+125 C403 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+125 C172 0CK225DFK4A C2012Y5V1C225MT 2.2uF 20% 16V Y5V -30TO+85 C404 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+125 C175 0CK104CK56A...
  • Page 24 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C910 0CK103CK56A 0603B103K500CT 10nF 10% 50V X7R -55TO+125C 0IPRPPH024A TDA8024T 2.7TO6.5V 1.5mA 2.2TO3.2MHZ SO R/ DIODEs IC100 EAN33715803 LGE9689AD-LF 300MVTO3.6V,300MVTO2.75V,300M IC1000 0IMCRKE006B KIA278R33PI 4TO10V 3.3V 1.5W TO200IS ST 4P 0DSON00138A MMBD301LT1G 600MV 30V - - 1.5pF 200MW SOT2 IC1002...
  • Page 25 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1032 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012 R/TP R159 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R/TP R1034 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 1608 R/TP 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1608 R/TP R1036 0RJ2702D477 MCR03EZPF273 27KOHM 1% 1/10W 1608 R/TP...
  • Page 26 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R228 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 1608 R/TP R323 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10W 1608 R/TP R229 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R/TP R325 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R/TP R231 0RJ1000D677...
  • Page 27 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R702 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 1608 R/TP R952 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 1608 R/TP R703 0RJ0752D477 MCR03EZPF750 75OHM 1% 1/10W 1608 R/TP R953 0RJ5601D477 MCR03EZPF562 5.6KOHM 1% 1/10W 1608 R/TP R707 0RJ4703D677...
  • Page 28 SMAW200-05P 5P 2.00MM 1R ANGLE DIP ST NATU P305 6602T20009G SMAW200-08P 8P 2.00MM 1R ANGLE DIP ST NATU MFL39444601 Manual,Owners USER LJ71A LG 20/23LS7D-JA Japane P4000 6602T20009G SMAW200-08P 8P 2.00MM 1R ANGLE DIP ST NATU 4950TKA320A Plate PRESS SBHG T1.2 SUPPORT UPSET...
  • Page 45 Aug., 2007 P/NO : MFL38623703 Printed in Korea...

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