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LG 55LP1M-WC Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : CL-80
MODEL : 55LP1M-WC
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 55LP1M-WC

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : CL-80 MODEL : 55LP1M-WC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION..............11 SVC REMOCON ..................15 TROUBLE SHOOTING ................16 BLOCK DIAGRAM...................22 WIRING DIAGRAM ..................24 EXPLODED VIEW .................. 25 REPLACEMENT PARTS LIST ............... 27 SVC. SHEET ....................- 2 -...

  • Page 3: Product Safety

    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 X-RADIATION, Shock, Fire, or other Hazards.

  • Page 4: Servicing Precautions

    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 CL-80 chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition. (1) Temperature: 25°C ±...
  • Page 7 5. Engineering Specification Item Content Remark Supported Sync Type Separate Sync, SOG, Composite Sync, Digital Operating Frequency Analog Horizontal 30 ~83 KHz Vertical 56 ~85 Hz Digital Horizontal 30 ~83 KHz Vertical 56 ~85 Hz Resolution Analog 1920 x 1080 @60Hz Recommend 1920 x 1080 @60Hz Digital...
  • Page 8 6. Signal Timing(Resolution) 1) PC Mode Total Front Back Video Sync Sync Porch Porch MODE Period Active Duration H / V Frequency Resolution Polarity Clock ( E ) Time ( A ) ( C ) ( D ) ( F ) H(Pixels) 25.175 31.469...
  • Page 9 7. Special Function Contents Description Remark Audio Output Output 10W + 10W Volume :Adjust Rating (Rated Out put ± 10%) Freq. Character 100Hz ~ 10KHz Range ( -3 dB ) T.H.D Within 10% Input Sensitivity 0.700Vrms Less then 40dB Speaker Type Built-In Impedance...
  • Page 10 8. Optical Character Item Criteria Remark Viewing Angle Horizontal(R/L) : +85 /-85 (min.), 88 /-88 (Typ.) ° ° ° ° <CR≥10> Vertical(Top/Bottom) : +85 /-85 (min.), 88 /-88 (Typ.) ° ° ° ° Luminance Luminance (cd/m2) 400 cd/m2 (min.) 500cd/m2 (Typ) 9300K Variation 1.33...

  • Page 11: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 3.2.4 Color coordinates adjustment and Luminance 1. Coverage Apply to monitor that is made or do standard here upon and adjustment. (input D-sub Analog ) manufacture in monitor factory this standard. 3.2.4.1 Color coordinates adjust ready. When each color coordinates & Black level adjust. 2.
  • Page 12 For Adjustment the R Gain is fixed at 100, to adjust G/B gain , the color coordinates 3.2.6.4 Color operation check: 9300K, 6500, 3600K ,USER 55LP1M-WC (x = 0.283±0.010, y = 0.298±0.010) COLOR are checked for normal operation. (G Gain is variable ,its range is 0 ~ 100)
  • Page 13 3.2.6.6 OSD and terminal check. Check clearly,adjustment 3.2.6.13 LANGUAGE: The default language is ENGLISH as follows the product specification. in the Product Specification Another language can be set as per Product 3.2.6.7 The input is Color bar pattern and 256 Gray scale Specification.

  • Page 14: Shipping Condition

    4. Shipping Condition Item Shipping Condition Remark. Shipping SOURCE RGB1 Condition DC Power S/W Monitor part EZ Video (none active) 6500K EZ Audio Flat Balance SRS WOW Input RGB1 Child Lock Language English Power Indicator Transparency Tile mode Reset Set ID Logo Display Lamp Light Sensor Full...

  • Page 15: Svc Remocon

    SVC REMOCON FUNTION REAMARK To turn the TV on or off POWER To turn the TV on automatically if the power is supplied to the TV. (Use the POWER ON POWER key to deactivate): It should be deactivated when delivered. To activate the mute function.

  • Page 16: Troubleshooting

    TROUBLESHOOTING 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK J601 VOLTAGE CHECK POWER BOARD (5V, 12V, 18V)? CHECK J603 VOLTAGE CHECK POWER BOARD (12V, 24V) ? CHECK X401 CHECK X401 (14.318MHz) ? CHECK J601 CHECK MICOM (U402) 10PIN SUB POWER PORT (SUB POWER) ? 1.
  • Page 17 2. NO RASTER(OSD IS NOT DISPLAYED) NO RASTER (OSD IS NOT DISPLAYED) CHECK U402 CHECK THE PERIPHERAL OUTPUT WAVE? IC U402 CHECK INVERTER CHECK WAFER AND VOLTAGE POWER BOARD (12V, 24V)? CHECK CHECK MODULE LINK MODULE INPUT CABLE WAVE? 1. CHECK INVERTER 2.
  • Page 18 3. NO RASTER STATE ON VIDEO SIGNAL NO RASTER STATE ON VIDEO SIGNAL REMARK : POWER CHECK POWER CHECK OF CXA2040 (U201) : U204(9V) POWER CHECK OF UPD64012 (U801) : U803(3.3V), U804(1.5V) POWER CHECK OF MST9883C (U303) : U304(3.3V) POWER CHECK OF MDIN150H (U901) : U907(3.3V), U908(2.5V) POWER CHECK OF GM1601H (U402) CHECK THE PERIPHERAL NO RASTER IS COMPONENT...
  • Page 19 4. NO RASTER STATE ON RGB SIGNAL NO RASTER STATE ON RGB SIGNAL REMARK : POWER CHECK POWER CHECK OF BA7657F (U121) : 5VP POWER CHECK OF SCHMITT TRIGGER (U123, U124) : 5VP POWER CHECK OF MC14066B (U122) : 5VP POWER CHECK OF GM1601H (U402) INPUT WAFER CHECK (J101) CHECK BA7657F(U121) I/O...
  • Page 20 5. NO RASTER STATE ON DVI SIGNAL NO RASTER STATE ON DVI SIGNAL REMARK : POWER CHECK POWER CHECK OF GM1601H (U402) INPUT WAFER CHECK (J102) CHECK THE PERIPHERAL CHECK GM1601H(U402) I/O NO IN / OUTPUT SIGNAL GM1601H(U402) SIGNAL? AND SDRAM(U401, U406) NO PROBLEM CHECK THE MODULE CHECK THE INVERTER...
  • Page 21 6. SOUND TROUBLE SHOOTING REMARK : POWER CHECK POWER CHECK OF MSP3420G (U501) : U522(8V), L502(8V), L501(5V), L505(5V) POWER CHECK OF TPA3004 (U502) : 18V CHECK SOUND OF VCR,DVD,PC,SETOP BOX... CHECK SOUND INPUT = PC (J707) CHECK GMSP3420G(U501) I/O NO IN / OUTPUT SIGNAL = DTV / DVD (J702) = VIDEO (SVBS, S-VIDEO) (J701) SIGNAL?

  • Page 22: Block Diagram

    BLOCK DIAGRAM Light Sensor Ass y Logo LED Assy 4P Wafer 3P/5P Wafe r 15P Wafer 10P Wafer 9P Wafer Power Assy Control Ass y RS232 In /Out - 22 -...
  • Page 23 BLOCK DIAGRAM DESCRIPTION 1. INPUT SELECTION CIRCUIT 7. AUDIO AMPLIFIER 1) D-SUB RGB INPUT SELECT : This section is composed of This section is composed of TPA3004(U502) OR TPA3001 Signal selector IC(BA7657F_U121) and peripheral devices. (U507) and peripheral devices. The BA7657F(U121) IC select RGB1 signal or RGB2 Audio Amplifier's function is amplification of sound signal signal and the signal is sent to gm1601H(402).

  • Page 24: Wiring Diagram

    - 24 -...

  • Page 25: Exploded View

    EXPLODED VIEW - 25 -...

  • Page 26: Exploded View Parts List

    DESCRIPTION PART NO. 3091TKE020K CABINET ASSEMBLY, 55LP1M BRAND 3090TKE017A NON 6304FLP296A LCD(LIQUID CRYSTAL DISPLAY), LC550W01-A5K2 LG PHILPS TFT COLOR A5K1+STATUS PIN or 6304FLP205A LCD(LIQUID CRYSTAL DISPLAY), LC550W01-A5K1 LG PHILPS TFT COLOR AI/ODC 3809TKE023C BACK COVER ASSEMBLY, M5500C . COMMERICAL 3043TKK215C TILT SWIVEL ASSEMBLY, M5500C .

  • Page 27: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN, CH : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit in the CQ : Polyestor RS : Metal Oxide Film P/No. means as follows; CE : Electrolytic RN : Metal Film CF : Fixed Film RH : CHIP, Metal Glazed(Chip)
  • Page 28 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C829 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C126 0CK103CK51A 0.01UF 1608 50V 10% R/TP B( C830 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
  • Page 29 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C508 0CK224CF56A 0.22UF 1608 16V 10% R/TP X7 C683 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R C509 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R...
  • Page 30 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C636 0CC102CK41A 1000PF 1608 50V 5% R/TP NP0 C588 0CH8106F691 10UF 16V 20% 105STD (CYL) R C702 0CC471CK41A 470PF 1608 50V 5% R/TP NP0...
  • Page 31 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D505 0DSON00138A "MMBD301LT1G,LF ON SEMI R/TP" U120 0ISS524202B "S524A40X21-SCT0, LF SAMSUNG" D506 0DSON00138A "MMBD301LT1G,LF ON SEMI R/TP" U401 0IMMRHY052C "HY5DU281622ETP-5,PB FREE HY"...
  • Page 32 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L710 6210TCE001F HB-1S2012-800JT CERATEC 201 L608 6210TCE001G HH-1M3216-501 CERATEC 3216M L711 6210TCE001F HB-1S2012-800JT CERATEC 201 L614 6210TCE001G HH-1M3216-501 CERATEC 3216M...
  • Page 33 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION U603 0TFIR80009D "IRF7316TRPBF,LF INTERNATION" R4005 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% U607 0TFFC80009A FAIRCHILD FDC6326L R/TP SOT...
  • Page 34 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1050 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP R154 0RJ0332D677 33 OHM 1/10 W 5% 1608 R/TP R1051 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP...
  • Page 35 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R280 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP R448 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP R281 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP...
  • Page 36 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R535 0RJ2002D477 20K OHM 1/10 W 1% 1608 R/TP R713 0RJ0752D677 75 OHM 1/10 W 5% 1608 R/TP R536 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP...
  • Page 37 DATE: 2005. 11. 01. DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION INTERFACE BOARD C3107 0CE106SF6DC 10UF MVG 16V 20% R/TP(SMD) R801 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP C3108 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R...
  • Page 38 DATE: 2005. 11. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R917 0RJ8200D677 820 OHM 1/10 W 5% 1608 R/TP R918 0RJ1501D677 1.5K OHM 1/10 W 5% 1608 R/T R919 0RJ2201D677 2200 OHM 1/10 W 5% 1608 R/T R932 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP...
  • Page 42 Oct, 2005 P/NO : 38289S0022U Printed in Korea...

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