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LG 50PC3D Service Manual
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LG 50PC3D Service Manual

LG 50PC3D Service Manual

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See also: Owner's Manual
PLASMA TV
SERVICE MANUAL
CHASSIS : PB61A
MODEL : 50PC3D
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
50PC3D-AA
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 50PC3D

  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : PB61A MODEL : 50PC3D 50PC3D-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 ....................10 ADJUSTMENT INSTRUCTIONS ...............12 TROUBLE SHOOTING GUIDE ................17 PRINTED CIRCUIT DIAGRAM ................23 BLOCK DIAGRAM .....................27 EXPLODED VIEW ....................30 EXPLODED VIEW PARTS LIST ................31 REPLACEMENT PARTS LIST................32 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

    Front Panel Controls PROGRAMME ( ) Buttons VOLUME ( Buttons OK Button MENU MENU Button INPUT INPUT Button ON/O r / I (Power) Button Remote Control Sensor Power/Standby Indicator • illuminates red in standby mode. • illuminates white when the set is switched on.
  • 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 COMPONENT IN MONO VIDEO...
  • Page 8 ACCESSORIES INPUT POWER INPUT TEXT GUIDE INFO LIST I/II MENU EXIT SLEEP Owner’s Manual Q.VIEW MUTE SIZE INDEX TIME REVEAL PIP PR + PIP PR - PIP INPUT SWAP Owner’s Manual Batteries Remote Control Power Cord For 42PC1D*/50PC1D* 42PC1D* 2-Wall brackets 2-eye-bolts 2- Bolts - 8 -...
  • 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.

  • Page 10: Specifications

    This spec is applied to the 50” PLASMA TV used PB61A Chassis. Chassis Model Name Market Brand Remark PB61A 50PC3D-AA Australia No function for PIP/Teletext 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 11 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 12: 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 13: Adjustment Method

    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 14 8. EDID(The Extended Display 8-4. Act or set the EDID S/W 1) As above Fig. 6, Connect the Set, EDID Download Jig, PC Identification Data)/DDC & Cable. (Display Data Channel) Download 2) Turn on the PC & EDID Download Jig. And Execute the S/W : EDID TESTER Ver,2.5.
  • Page 15 9. Adjustment of White Balance 9-4. Adjustment of White Balance (Automatic Adjustment) 9-1. Required Equipment Calibrate of the CA-210, then attach sensor to PDP module surface when you adjust. (1) Color analyzer (CA-210 or similar product) Manual adjustment is also possible by the following sequence. (2) Automatic adjustor (with automatic adjustment hour necessity and the RS-232C communication being possible) (1) HEAT RUN at least 30 minutes by pressing the Power only...
  • Page 16 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 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. 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 - 18 -...
  • Page 19 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 20 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 21 (5) When Component or RGB-DTV/ PC mode is abnormal Is the CXA2151Q(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 22 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 23: Printed Circuit Diagram

    PRINTED CIRCUIT BOARD MAIN(TOP) - 23 -...
  • Page 24 MAIN(BOTTOM) - 24 -...
  • Page 25 TUNER (TOP) TUNER (BOTTOM) - 25 -...
  • Page 26 CONTROL SIDE A/V PRE-AMP - 26 -...

  • Page 27: Block Diagram

    BLOCK DIAGRAM - 27 -...
  • Page 28 - 28 -...
  • Page 29 MEMO - 29 -...

  • Page 30: Exploded View

    EXPLODED VIEW - 30 -...

  • Page 31: Exploded View Parts List

    68719SMK96B PCB Assembly, Sub SUB M.I PB61A 50PC1D-AA AAULLHX AUSTRAILIA DTV TUNER MANUAL 68719SMK74B PCB Assembly, Sub SUB M.I PB61A 50PC3D-AA AAULLH AUSTRAILIA DTV LOCAL ASSY MANUAL EBR30687302 PCB Assembly, Sub SUB M.I PB61A 50PC3D-AA AAULLH AUS DTV PREAMP 6709900020B...

  • Page 32: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC703 0IPMG00028A AZ1117H-1.5TRE1 3TO10V 1.5V - SOT223 IC704 0IMMR00229A M12L16161A-5TG 16MBIT IC100 0ISO206900A CXA2069Q 8.5TO9.5V 1300MW IC705 0IPMGA0010A AZ1117H-3.3 4.75TO10V 3.3V 0W SOT223 IC100 0IMCRSS016A S3C44BOX01-EDRO 3TO3.6V 60MA IC706 0ISA721700C LA7217M 4.5VTO5.5V 16.1KHZ 150MW...
  • 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 AL603 6210TCE002B Bead, HB-4M3216-121JT 120OHM L504 0LCML00003B Bead, MLB-201209-0120P-N2 120OHM AL604 6210TCE002B Bead, HB-4M3216-121JT 120OHM L600 6210TCE001G Bead, HH-1M3216-501JT 500OHM AL605 6210TCE002B Bead, HB-4M3216-121JT 120OHM L600 0LCML00003B Bead, MLB-201209-0120P-N2 120OHM L100 0LCML00003B Bead, MLB-201209-0120P-N2 120OHM...
  • Page 51 EBL32961501 Tuner,Digital TDFB-G305P DVB-T(COFDM) TU300 EBL31715901 Tuner,RF Modulator TASA-G207D DVB(OFDM) ACCESSORIES 38289U0569E Manual, PRINTING USER PB61A LG EN 010Z-TX 395C 6710900010Z Remote Controller, COMPLEX PB61A 50PC3D-AA 6410TSW003A Power Cord, LP-23A+SAG18N<B10A&LS.. 1.87M 4972V00178A Supporter, COMPLEX WALL NON ASSY PDP SET - 51 -...
  • Page 56 Sep., 2006 P/NO : 38289S0039F Printed in Korea...

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