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LG 50PC1R Service Manual
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LG 50PC1R Service Manual

LG 50PC1R Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : PP62A
MODEL : 50PC1R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
50PC1R-ZH
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : PP62A MODEL : 50PC1R 50PC1R-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 ....................9 ADJUSTMENT INSTRUCTIONS ...............11 TROUBLE SHOOTING GUIDE ................16 PRINTED CIRCUIT DIAGRAM ................24 BLOCK DIAGRAM .....................27 EXPLODED VIEW ....................28 EXPLODED VIEW PARTS LIST ................29 REPLACEMENT PARTS LIST................30 SCHEMATIC DIAGRAM..................- 2 -...

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS I M P O RTANT 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 Returns from AV1 , AV2 , S-Video2 , AV3 , AV4 (except TV INPUT INPUT 42PC3RV * ), Component , RGB , HDMI1/DVI or HDMI 2 to the TV mode.
  • Page 5 MODE Selects the remote operating modes. INPUT POWER These buttons are used for teletext. 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 - 6 -...
  • 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 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 - 8 -...

  • Page 9: Specifications

    Chassis Model Name Market Brand Remark PP62A 50PC1R-ZH Specification Each part is tested as below without special appointment. 1) Temperature : 25±5°C (77±9°F), CST : 40±5 2) Relative Humidity: 65±10% 3) Power Voltage: Standard Input voltage (100-240V~, 50/60Hz) * Standard Voltage of each product is marked by models.
  • Page 10 2. Model General Specification Item Specification Remark Market Broadcasting system PAL-BG/I/DK, SECAM BAND SECAM E2~E12 Available Channel E21~E69 CATV S1~S20 HYPER S21~S41 Receiving system Upper Heterodyne Scart Jack (2EA) PAL, SECAM, NTSC,NTSC4.43 4 System : PAL, SECAM, NTSC, PAL60 Video Input (2EA) PAL, SECAM, NTSC,NTSC4.43 4 System : PAL, SECAM, NTSC, PAL60 S-Video Input (2EA)

  • Page 11: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 3-2. Channel memory Method 1) Select “PDP” and “Hurricane” on Model dialog. And check These instructions are applied to all of the 50” PLASMA TV, your connection in Communication dialog. (If your PP62A Chassis. connection is ‘NG’, then set your PORT.(COM1,2,3,...) correctly.) 2.
  • Page 12 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 13 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 14 8-5. Sequence of Adjustment 3) Enter the White Balance adjustment mode by pressing the INSTART key twice(White Balance) on R/C. 1) Init the data. 4) Stick sensor to center of the screen and select each items 2) Load the EDID data.( Open File : Analog ,Digital) (Red/Green/Blue Gain and Offset) using (CH +/-) key on R/C.
  • Page 15 11-2. White Balance (89) (Fig. 12) Default Value on OSD 12. Power-off History 1) This function indicated Power off history. 2) You can go into this mode by ADJ key in ADJ remocon. (Fig. 13) Power-off History - 15 -...

  • Page 16: 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 17 1-2. 50” Power Board Structure T801: Vs Trans T901: Va Trans T902: Vs aux. Trans L851: Vs Inductor T112: Low Voltage Trans T501: ST-BY Trans T601: PFC Inductor - 17 -...
  • Page 18 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 19 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 20 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 21 5. In case of occurring strange screen into specific mode 5-1. In case the OSD does not displayed (1) Symptom 1) LED is green. 2) The minute discharged continuously becomes accomplished from module. (2) Check following Is the LVDS cable Is the LVDS cable Replace the cable.
  • Page 22 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 23 6. In case of no sound (1) Symptom 1) LED is green. 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 24: Printed Circuit Diagram

    PRINTED CIRCUIT BOARD MAIN(TOP) - 24 -...
  • Page 25 MAIN(BOTTOM) - 25 -...
  • Page 26 CONTROL PRE-AMP SIDE A/V - 26 -...

  • Page 27: Block Diagram

    BLOCK DIAGRAM - 27 -...

  • Page 28: Exploded View

    EXPLODED VIEW - 28 -...

  • Page 29: Exploded View Parts List

    Plate Assembly, AV 50PC1R-CH SKD 3301900094T Plate Assembly, ASSY 50PC1R-ZH SKD 68719MMV68B PCB Assembly, Main MAIN1 M.I PP62A 50PC1R-ZH AEULLHX H3 68719SMH44A PCB Assembly, Sub SUB M.I PP62A 42PC1R AMLLKX 68719SML93A PCB Assembly, Sub SUB M.I PP62A 42PC1R-ZH SETLLJP DMS SKD PREAMP...

  • Page 30: Replacement Parts List

    R E P L ACEMENT PA RTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q200 0TR150400BA 2SA1504S(ASY) PNP -5V -50V -50V Q201 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50V 150MA IC1000 0IPRPML001A MIC39100 2.3TO26V SOT223 R/TP 5P Q202 0TR150400BA 2SA1504S(ASY) PNP -5V -50V -50V...
  • 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 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 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 L1002 6200J000013 MLB-321611-0500P-N2 500OHM L1858 6200J000013 MLB-321611-0500P-N2 500OHM L1004 6200J000013 MLB-321611-0500P-N2 500OHM L1859 6200J000013 MLB-321611-0500P-N2 500OHM L1005 6200J000013 MLB-321611-0500P-N2 500OHM...
  • Page 39 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION P401 6602T25008B Conector,Wafer SMW250-03P 3P 2.50MM P600 366-932B Conector,Wafer GIL-G-03P-S3T2-E 3P 2.50MM P800 6602T20008J Conector,Wafer SMW200-10P 10P 2.00MM P803 6602T12007D Conector,Wafer GT121-31P-TD 31P 1.25MM MISCELLANEOUS 68509A0004E Cable,Assembly RCA R/A TO RCA BLACK 100MM 6850J00005C Cable,Assembly GT121 HOUSING GT121 0.6M IC603...
  • Page 40 CORTEZ HDMI...
  • Page 41 DDR MEMORY...
  • Page 42 Mar., 2006 P/NO : 38289S0024D Printed in Korea...

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