LG 42PC1R Service Manual
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LG 42PC1R Service Manual

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PLASMA TV

SERVICE MANUAL

CHASSIS : PP62A
MODEL : 42PC1R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
42PC1R-ZH
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 42PC1R

  • Page 1: Service Manual

    PLASMA TV SERVICE MANUAL CHASSIS : PP62A MODEL : 42PC1R 42PC1R-ZH CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ..................3 DESCRIPTION OF CONTROLS ................4 SPECIFICATIONS ....................10 ADJUSTMENT INSTRUCTIONS ...............12 TROUBLE SHOOTING GUIDE ................17 PRINTED CIRCUIT DIAGRAM ................25 BLOCK DIAGRAM .....................27 EXPLODED VIEW ....................28 EXPLODED VIEW PARTS LIST ................29 REPLACEMENT PARTS LIST................30 SCHEMATIC DIAGRAM..................

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS IMPORT ANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by 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: Description Of Controls

    DESCRIPTION OF CONTROLS POWER Switches the set on from standby or off to standby. INPUT POWER TV INPUT Returns from AV1 , AV2 , S-Video2 , AV3 , AV4 (except INPUT 42PC3RV * ), Component , RGB , HDMI1/DVI or to the TV mode.
  • Page 5 Selects the remote operating modes. MODE INPUT POWER TELETEXT These buttons are used for teletext. INPUT BUTTONS For further details, see the ‘Teletext’ section. TEXT SIZE POSTION PIP PR- PIP PR+ PIP INPUT SWAP Allows you to navigate the on-screen menus and THUMBSTICK (Up/Down/Left adjust the system settings to your preference.

  • Page 6: Front Panel Controls

    Front Panel Controls INPUT MENU Power/Standby Indicator • illuminates red in standby mode. • illuminates white when the set is switched on. INPUT MENU INPUT MENU INPUT Button OK Button PROGRAMME Buttons POWER Button MENU Button VOLUME Buttons...
  • Page 7 Back Connection Panel AUDIO Input AV IN 4 Connections are available for listen- ing stereo sound from an external device. AUDIO AUDIO L/MONO VIDEO Input VIDEO VIDEO Connects the video signal from a video device. (except 42PC3RV * ) AV 1 AV 2 AC IN VARIABLE...
  • Page 8 SLEEP Owner’s Manual Q.VIEW MUTE TIME REVEAL INDEX Polishing Cloth Owner’s Manual Batteries Remote Control Power Cord Polish the screen with the cloth (Option) For 42PC1R * , 42PC3R * , 50PC1R * 2-bolts for stand assembly 2-Wall brackets 2-eye-bolts...
  • Page 9 STAND INSTALLATION(OPTION) Place the set with the screen facing down on a cushion or soft cloth as shown in Figures 1. Before unfolding the stand, please make sure two locks (A) on the bottom of the stand push outward. Pull the stand out as shown above in Figures 2 ~ 3. After unfolding the stand, please insert and tighten the screws in the holes (B) on the bottom of the stand.

  • Page 10: Specifications

    42 inch wide Color Display Module Aspect Ratio 16:9 PDP Module PDP42X3###, Film Filter RGB Closed Type Operating Environment 1)Temp. : 0~40deg LGE SPEC. 2)Humidity : 0~85% Storage Environment 3)Temp. : -20~60deg 4)Humidity : 0~85% Input Voltage AC100~240V, 50/60Hz Maker : LG...
  • Page 11 1-2. 42”WVGA MODULE Item Specification Remark Display Screen Device 42 inch wide Color Display Module Aspect Ratio 16:9 PDP Module PDP42V8###, Film Filter RGB Closed Type Operating Environment 1)Temp. : 0~40deg LGE SPEC. 2)Humidity : 0~85% Storage Environment 3)Temp. : -20~60deg 4)Humidity : 0~85% Input Voltage AC100~240V, 50/60Hz...

  • Page 12: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 3-2. Channel memory Method 1) Select “PDP” and “Hurricane” on Model dialog. And check These instructions is applied all of the 42” PDP TV, PP62A/C your connection in Communication dialog. (If your Chassis. connection is ‘NG’, then set your PORT(COM1,2,3,...) correctly.) 2.
  • Page 13 4. Auto AV(CVBS) Color Balance 5-3. Method of Auto RGB Color Balance 1) Input the Component 720p 100% Color Bar signal into Component1 or Component2. 4-1. Requirement 2) Set the PSM to Dynamic mode in Picture menu. It is very import to use correct adjustment pattern like (Fig.4). 3) Press INSTART key on R/C for adjustment.

  • Page 14: Adjustment Method

    7. POWER PCB Assy Voltage 8-3. Preparation for Adjustment 1) As above Fig. 8, Connect the Set, EDID Download Jig, PC Adjustments (Va, Vs Voltage adjustments) & Cable. 2) Turn on the PC & EDID Download Jig. And Execute the 7-1.

  • Page 15: White Balance

    8-5. Sequence of Adjustment If Assy has Scart jack ,Use AV3 Else use AV1. 1) Init the data. 3) Enter the White Balance adjustment mode by pressing the 2) Load the EDID data.( Open File : Analog ,Digital) INSTART key twice(White Balance) on R/C. 4) Stick sensor to center of the screen and select each items (Red/Green/Blue Gain and Offset) using (CH +/-) key...
  • Page 16 12. Power-off History This function indicated Power off history. You can go into this mode by ADJ key in ADJ remocon. (Fig. 13) Power-off History...

  • Page 17: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE 1. Power Board 1-1. The whole flowchart which it follows in voltage output state Start check Is it identical Doesn't the Is the Interface screen whole come with Power Off signal operated? out? condition? 1. Check the Power Off 2.
  • Page 18 1-2. LG Innokek Power Board Structure...

  • Page 19: No Power

    2. No Power (1) Symptom 1) Doesn’t minute discharge at module. 2) Non does not come in into the front LED. (2) Check following Is plug in power cord? Plug in power cord. Is the Line Filter and Power Connect the Cable. Board Cable connected? Is the Fuse(F101) on Replace the Fuse.
  • Page 20 3. Protect Mode (1) Symptom 1) After once shining, it does not discharge minutely from module. 2) The Rely falls.(The sound is audible “click”) 3) It is converted with the color where the front LED is red from green. (2) Check following Is the Power Board Is output the normality Low/High Replace Power...
  • Page 21 4. No Raster (1) Symptom 1) Doesn’t minute discharge at module. 2) It maintains the condition where the front LED is green. (2) Check following Is the Power Board Is output the normality Low/High Replace the normal? voltage except Stand-by 5V? Power Board.
  • Page 22 5. In case of occurring strange screen into specific mode 5-1. In case the OSD does not displayed (1) Symptom 1) LED is white. 2) The minute discharged continuously becomes accomplished from module. (2) Check following Is the LVDS cable Is the LVDS cable Replace the cable.
  • Page 23 5-2. In case of does’t display the screen into specific mode (1) Symptom 1) The screen does not become the display from specific input mode. (RF, AV, Component, RGB, DVI) (2) Check following 1) Check the all input mode should become normality display. 2) Check the Video(Main)/Data(Sub), Video(Main)/Video(Sub) should become normality display from the PIP mode or DW mode.
  • Page 24 6. In case of no sound (1) Symptom 1) LED is white. 2) Screen display but sound is not output. (2) Check following Is the SPK cable Is the SPK cable Replace SPK cable normal? connected well? Cable inserts well. Is the RF/ AV/ Does IC400 Does IC401...

  • Page 25: Printed Circuit Diagram

    PRINTED CIRCUIT BOARD MAIN(TOP)
  • Page 26 MAIN(BOTTOM) CONTROL PRE-AMP SIDE A/V...

  • Page 27: Block Diagram

    BLOCK DIAGRAM...

  • Page 28: Exploded View

    EXPLODED VIEW...

  • Page 29: Exploded View Parts List

    ALRLLH(RUSSIA) 68719SML91A PWB(PCB) ASSEMBLY,SUB SUB M.I PP62A 42PC1R-ZH SETLLJ DMS SKD SIDE A/V 68719SMM70A PWB(PCB) ASSEMBLY, SUB SUB M.I PP62A 42PC1R-ZH KETLLMP SIDE A/V MANUAL CKD FOR LGEMA 4811900021C BRACKET ASSEMBLY, SIDE AV 42PC1R-ZH PP62A CORTEZ-A, E 48149V0003A SHIELD, SIDE AV 42PC1R...

  • Page 30: Replacement Parts List

    KRA102S R/TP KEC SOT23 CHIP TR 0IMMR00002A IC902 K4D261638F-LC50,LF TSOPII 66P TRAY Q407 0TR387500AA CHIP 2SC3875S(ALY) BK KEC IC900 692791145AB SOFT WARE, 2.00V A8AA PDP PP62A 42PC1R-ZH Q408 0TR102008AA KRA102S R/TP KEC SOT23 CHIP TR Q409 0TR387500AA CHIP 2SC3875S(ALY) BK KEC TRANSISTOR Q410...
  • Page 31 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 32 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 33 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 34 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 35 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 36 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 37 MLB-201209-1000L-N2 MAG LAYERS L1200 6200J000013 MLB-321611-0500P-N2 MAG LAYERS SWITCH L1201 6200J000013 MLB-321611-0500P-N2 MAG LAYERS SW101 140-313B TACT, 2LEAD 160G(TA) LG C&D 5V 0.001A L1202 6200J000013 MLB-321611-0500P-N2 MAG LAYERS SW102 140-313B TACT, 2LEAD 160G(TA) LG C&D 5V 0.001A L1203 6200J000013 MLB-321611-0500P-N2 MAG LAYERS...
  • Page 38 The components identified by mark critical for safety. Replace only with part number specified. LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L902 6200J000013 MLB-321611-0500P-N2 MAG LAYERS 38289U0025Z MANUAL, USER ALL EU LANS RS-232C L903 6200J000013 MLB-321611-0500P-N2 MAG LAYERS 6710900010A REMOTE CONTROLLER, PP62A H3-H 6200JB8008S...
  • Page 39 CORTEZ...
  • Page 40 DDR MEMORY...
  • Page 41 Feb., 2006 P/NO : 38289S0024A Printed in Korea...

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