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LG 22LS4R Service Manual
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LG 22LS4R Service Manual

Chassis : lp73a
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LCD TV
SERVICE MANUAL
CHASSIS : LP73A
MODEL : 22LS4R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
22LS4R-TA

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Summary of Contents for LG 22LS4R

  • Page 1 LCD TV SERVICE MANUAL CHASSIS : LP73A MODEL : 22LS4R 22LS4R-TA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................20 EXPLODED VIEW .................. 22 REPLACEMENT PARTS LIST ............... 24 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 SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.

  • Page 6: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range This specification is applied to the 19”/ 22” Wide LCD TV used LP73A chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition.
  • Page 7 4. Module Specification 4.1. 22” LCD MODULE (LPL LM220WE1-TLA1) Item Typ. Unit Remark Display area 473.76 (H) x 296.1 (V) Outline dimension 493.7 (H) x 320.1 (V) x 16.5 (D) Number of Pixels 1680 (H) x 1050 (V) 1Pixel=3RGB Cells Cell pitch 0.282mm (H) x 0.282mm (V) 1Pixel=3RGB Cells...
  • Page 8 Pixel clock(MHz) Proposed Remark 640*480 31.469 59.94 25.17 VESA(VGA) 800*600 37.879 60.31 40.00 VESA(SVGA) 1024*768 48.363 60.00 65.00 VESA(XGA) 1280*1024 63.981 60.02 108.0 VESA(WXGA) 1440*900 55.5 59.90 88.75 WXGA+ 19LS4R-TA only 1680*1050 65.290 59.954 146.25 WXGA+ 22LS4R-TA only - 8 -...
  • Page 9 63.981 60.02 108.0 VESA(WXGA) 1440*900 55.5 59.90 88.75 WXGA+ 19LS4R-TA only 1680*1050 65.290 59.954 146.25 WXGA+ 22LS4R-TA only 10. HDMI/DVI input (DTV) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 720*480 31.47 59.94 27.000 SDTV 480P 720*480 31.50 60.00 27.027 SDTV 480P 720*576 31.25...

  • Page 10: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to 19”/ 22” 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 11 : 78 at MSPG925L) 4) Check whether written EDID data is correct or not. (refer (3) Input signal : (1680 x 1050@60Hz) -> 22LS4R to Product spec). Full white 216/255 gray level (85 IRE, Model : 122, Pattern : 78 at MSPG925L)
  • Page 12 2) DIGITAL DATA 256Byte 4.11 Option data setting (SVC OSD setting) (1) PAL Model (Change by Suffix)- Tool option 19LS4R-MA 22LS4R-MA 12161(19”) 12162(22”) Resolution Module SCART COMPONENT PC-RGB HDMI - All Data : HEXA Value (2) Area Option S.Am - Changeble Data...
  • Page 13 5. Adjustment Command (2) Command Set Adjustment contents CMD(hex) ADH(hex) ADL(hex) Details 5.1. Adjustment Commands(LENGTH=84) EEPROM READ 0-Page 0~7F Read 0-Page 80~FF Read Adjustment Contents Description (hex) 1-Page 0~7F Read FACTORY ON Factory mode on 1-Page 80~FF Read FACTORY OFF Factory mode off 2-Page 0~7F Read EEPROM ALL INIT.

  • Page 14: Trouble Shooting

    TROUBLE SHOOTING 1. No Power (LED indicator off) : [A] Process Fail Check 15V 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 IC1100, IC1101.
  • Page 15 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 16 3. No RASTER on PC Signal Repeat [A, B] process. Pass Fail Check the input/ Check the J701. output of R735, R736. Pass Check Fail Re-soldering or Change the input/output the defect part. of R128, R131, R136. Pass Fail Check the Re-soldering or change the input/output of IC100.
  • Page 17 4. No Raster on Component Signal Repeat [A, B] process. Pass Fail Check the input/ Check the J900. output of R901. Pass Check Fail Re-soldering or Change the defect part. the input/output of R125. Pass Fail Check the Re-soldering or change the input/output of IC100.
  • Page 18 5. No Raster on HDMI Signal Repeat [A, B] process. Pass Fail Re-soldering or change the defect part. Check the input/ Check the X100. output of IC100. Pass Check input source cable and jack. 6. No Raster on AV(Scart in 7.
  • Page 19 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 X100 of IC100. Pass Fail Check the input/ Re-soldering or Change output of IC500 the defect part. Pass Fail Change Speaker.

  • Page 20: Block Diagram

    BLOCK DIAGRAM - 20 -...
  • Page 21 MEMO - 21 -...

  • Page 22: Exploded View

    EXPLODED VIEW - 22 -...
  • Page 23 Knob MOLD ABS HF380 SUB CONTROL KNOB LS4R 19LS4R_22LS4R 6871TPT318G PCB Assembly,Power PLLM-M602C LG INNOTEK CO., LTD EBR36362801 PCB Assembly LED & P/SW T.T LP69C 22LS4R AEUNLAX 22LS4R LED T.T ASS’Y MFB36500901 Lens MOLD PMMA PLUS LENS 19LS4R 19LS4R_22LS4R INDICATOR - 23 -...

  • Page 24: Replacement Parts List

    REPLACEMENT PARTS LIST DATE: 2007. 02. 10. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CAPACITORs C1139 0CE477EF638 KMG5.0TP16VB470M 470uF 20% 16V 366MA -55 C114 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+1 C1001 0CC331CK41A C1608C0G1H331JT 330pF 5% 50V C0G -55TO+1 C1140 0CE107WF6DC...
  • Page 25 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C163 0CK475CC94A C1608Y5V0J475ZT 4.7uF -20TO+80% 6.3V Y5V C400 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+1 C164 0CK105CD56A C1608X7R1A105KT 1uF 10% 10V X7R -55TO+12 C4000 0CN1040K949 CH UP050 F104Z-B-B Z 100nF -20TO+80% 50V C165 0CK225DFK4A C2012Y5V1C225MT 2.2uF 20% 16V Y5V -30TO+...
  • Page 26 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C702 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+1 ZD902 0DZ560009DA UDZS5.6B 5.6V 5.49TO5.73V 60OHM 200MW SO C703 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -55TO+1 ZD903 0DZ560009DA UDZS5.6B 5.6V 5.49TO5.73V 60OHM 200MW SO C706 0CK104CK56A...
  • Page 27 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1003 0RJ4703D677 MCR03EZPJ474 470KOHM 5% 1/10W 1608 R/TP R127 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W 1608 R/TP R R1004 0RJ4703D677 MCR03EZPJ474 470KOHM 5% 1/10W 1608 R/TP R128 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W 1608 R/TP R R1005...
  • Page 28 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R213 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R/TP R R4003 0RN6801F409 RN-96T1F6K80 6.8KOHM 1% 1/6W 3.2X1.8MM N R214 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R/TP R R4004 0RN2201F409 RN-96T1F2K20 2.2KOHM 1% 1/6W 3.2X1.8MM N...
  • Page 29 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R708 0RJ0271D677 MCR03EZPJ2R7 2.7OHM 5% 1/10W 1608 R/TP L1101 6210TCE001A Filter,Bead HB-1S2012-080JT 8OHM R709 0RJ0271D677 MCR03EZPJ2R7 2.7OHM 5% 1/10W 1608 R/TP L1102 6210TCE001A Filter,Bead HB-1S2012-080JT 8OHM R710 0RJ0271D677 MCR03EZPJ2R7 2.7OHM 5% 1/10W 1608 R/TP...
  • Page 30 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION SW4003 140-058B EVQPB205K 1C1P 15VDC 0.02A VERTICAL 160G SW4004 140-058B EVQPB205K 1C1P 15VDC 0.02A VERTICAL 160G SW4005 140-058B EVQPB205K 1C1P 15VDC 0.02A VERTICAL 160G SW4006 140-058B EVQPB205K 1C1P 15VDC 0.02A VERTICAL 160G SW4007 140-058B...
  • Page 33 PRINTED CIRCUIT BOARD MAIN(TOP) MAIN(BOTTOM) CONTROL...
  • Page 34 Feb., 2007 P/NO : MFL37421406 Printed in Korea...

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