LG 50PC1D Service Manual
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LG 50PC1D Service Manual

LG 50PC1D Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : PB61A
MODEL : 50PC1D
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
50PC1D-AA
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : PB61A MODEL : 50PC1D 50PC1D-AA 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 ................22 BLOCK DIAGRAM .....................26 EXPLODED VIEW ....................28 EXPLODED VIEW PARTS LIST ................29 REPLACEMENT PARTS LIST................30 SCHEMATIC DIAGRAM..................- 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 X-RADIATION, Shock, Fire, or other Hazards.

  • Page 4: Description Of Controls

    DESCRIPTION OF CONTROLS Selects digital or analogue mode. D/A INPUT (Digital TV / INPUT Analogue TV) POWER INPUT External input modes rotate in regular sequence: INPUT Digital, Analogue, AV1-2, Component 1-2, RGB- DTV (or RGB-PC), HDMI/DVI. TEXT GUIDE INFO POWER Switches the set between ON and STANDBY.
  • Page 5 TV, DVD, Selects the remote operating mode: TV, VCR, DVD. Select other operating modes, VCR, for the remote to operate external devices. Switches to PIP, POP and Twin picture modes or off mode. GUIDE Shows a programme schedule. INFO Shows the present screen information. COLOURE They are used as per the indications or functions displayed on the TV screen in Button...
  • Page 6 Front Panel Controls INPUT MENU Remote INPUT MENU VOLUME PROGRAMME POWER Control Button Button Button Button Sensor )Buttons )Buttons Power Standby Indicator Illuminates red in standby mode. When the TV is turned on, the indicator blinks white and then illumi- nates white before the picture is displayed.
  • Page 7 Back Connection Panel AUDIO Input Connections are available for listen- ing to stereo sound from an external device. VIDEO Input Connects the video signal from a video device. AV OUT AV OUT VIDEO AUDIO S-VIDEO VIDEO AUDIO AV IN 1 MONO COMPONENT IN S-VIDEO...
  • Page 8 42PC1D* 2-Wall brackets 2-eye-bolts 2- Bolts 42PC1DG/ 50PC1D only Slightly wipe stained spot on the exterior only with the polishing cloth for the product exterior if there is stain or fingerprint on surface of the exterior. * Do not wipe roughly when removing stain. Please be cautions of that excessive power may cause scratch or discoloration.

  • Page 9: Specifications

    This spec is applied to the 50” PLASMA TV used PB61A Chassis. Chassis Model Name Market Brand Remark PB61A 50PC1D-AA Australia 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 Remark Specification Item Unit Broadcasting system PAL-B/G, DTV : DVB-T Available Channel 1) VHF : 00 ~ 12 2) UHF : 20 ~ 75 3) CATV : 02 ~ 44 4) DTV : 06 ~12, 27 ~ 69 Tuner IF 1) PAL : 38.90MHz(Picture), 34.40MHz(Sound)

  • Page 11: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 5. MST3362M-Set Adjustment These instructions are applied to all of the 50” PLASMA TV, 5-1. Synopsis PB61A Chassis MST3362M-Set adjustment to set the black level and the Gain of optimum with an automatic movement from the analog => 2.
  • Page 12 6. Video(uPD)-Set Each PCB Assy must be checked by Check JIG Set before assembly. (Especially, be careful Power PCB Assy which can 6-1. Synopsis cause Damage to the PDP Module.) This is a adjustment to reduce the color difference of video signal Main/Sub Display.
  • Page 13 2) Load the EDID data.(Open File) Checksum HDMI Model (Analog) (Digital) 50PC1D-AA 3824 3) Press the “Write Data & Verify”button. and input the data. (2) RGB EDID DATA. 4) If the writing is finished, you will see the “OK” message.
  • Page 14 [ [ RS-232C Command 9. Adjustment of White Balance (Automatic Adjustment) CENTER RS-232C COMMAND 9-1. Required Equipment (DEFAULT)(Hex) [CMD ID DATA] (1) Color analyzer (CA-100 or similar product) (Hex) (2) Automatic adjustor (with automatic adjustment hour Cool Warm Cool Warm necessity and the RS-232C communication being possible) R Gain 9-2.
  • Page 15 10. Check the adjustment of the plant shipping mode : This adjustment is checking the set state after take a adjustment of examination, check state of this model as shown below pressing the IN_STOP button on the adjustment Remote Controller. Item Condition Remark...

  • 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. In case of occurring strange screen into specific mode 2-1. In case the OSD does not displayed (1) Symptom 1) LED is white. 2) Some discharge on Panel becomes accomplished continuously. (2) Check follow Is the LVDS cable Is the LVDS cable Replace the cable.
  • Page 19 2-2. 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.(Re-Check using Swap function) Check the NEC64015(IC701) if the main picture is abnormal, and...
  • Page 20 (5) When Component or RGB-DTV/ PC mode is abnormal Is the CXA2181Q(IC500) Is normal the Input voltage, IIC Replace the IC. normal? Communication and HV sync? Is the MST3362(IC604) Is normal the Input voltage, IIC Replace the IC. normal? Communication and HV sync? Is normal the Input voltage, IIC Is the Scaler normal? Replace the IC.
  • Page 21 3. When sound is abnormal (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 Flat cable Cable inserts well.

  • Page 22: Printed Circuit Diagram

    PRINTED CIRCUIT BOARD MAIN(TOP) - 22 -...
  • Page 23 MAIN(BOTTOM) - 23 -...
  • Page 24 TUNER (TOP) TUNER (BOTTOM) - 24 -...
  • Page 25 CONTROL SIDE A/V PRE-AMP - 25 -...

  • Page 26: Block Diagram

    BLOCK DIAGRAM - 26 -...
  • Page 27 - 27 -...

  • Page 28: Exploded View

    EXPLODED VIEW - 28 -...

  • Page 29: Exploded View Parts List

    Plate Assembly, AV VTCP-PRESS 3301900092U Plate Assembly, ASSY DIGITAL COVER ASSY EBR30683301 PCB Assembly, Main MAIN1 M.I PB61A 50PC1D-AA AAULLH AUSTRAILIA DTV DIGITAL MANUAL 68719SMK96B PCB Assembly, Sub SUB M.I PB61A 50PC1D-AA AAULLHX AUSTRAILIA DTV TUNER MANUAL 68719SMK74A PCB Assembly, Sub SUB M.I PB61A 42PC1DV-AA AAULLHX AUSTRAILIA DTV LOCAL ASSY MANUAL EBR30687303 PCB Assembly, Sub SUB M.I PB61A 50PC1D-AA AAULLH AUS DTV PREAMP...

  • Page 30: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC602 0IPMGA0010A AZ1117H 3.3 4.75TO10V 3.3V 0W IC603 0IMMRCS012B CAT24WC08W T(MST3000) 8KBIT 1KX8B IC100 0ISO206900A CXA2069Q 8.5TO9.5V 1300MW IC604 0IPRP00697A MST3362M LF 110 2.5 TO 3.3V 0HZ 1 IC100 0IMCRSS016A S3C44BOX01 EDRO 3TO3.6V 60MA...
  • 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 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 39 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 40 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 41 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 42 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 43 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 44 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 45 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 46 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 47 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 48 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 49 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 50 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L400 6200J000013 MLB 321611 0500P N2 500OHM FILTER & CRYSTAL L401 0LCML00003B MLB 201209 0120P N2 120OHM 6200J000115 IJ N06CESL1 5.3mH 250VAC 6A 0.22u L401 6200J000013 MLB 321611 0500P N2 500OHM 6200JB8013A 6200JB8013A 80OHM 20.5MM 11MM L402...
  • Page 51 Crystal, HC 49/SM 24.576MHZ 30PPM 24.576MH ACCESSORIES X800 6212AB2873A Crystal, HC 49/SM 24.576MHZ 30PPM 24.576MH 38289U0569A Manual, USER PB61A LG 42PC3DV AA EN 141L JACK 6710900010C Remote Controller, DTV AUS 62KEY WITHOUT EPF J100 6612J00062N Complex, PMJ030 02 22P RCA/DIN 14MM 6410TSW003A Power Cord, LP 23A+SAG18N<B10A&LS 1.87M...
  • Page 56 Jul., 2006 P/NO : 38289S0039E Printed in Korea...

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