LG 42PX2RVA Service Manual

Chassis: mf-056c
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PLASMA TV
SERVICE MANUAL
CHASSIS : MF-056C
MODEL : 42PX2RVA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
42PX2RVA-ZC
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 42PX2RVA

  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : MF-056C MODEL : 42PX2RVA 42PX2RVA-ZC 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 ....................8 ADJUSTMENT INSTRUCTIONS ..............10 TROUBLE SHOOTING GUIDE ................14 BLOCK DIAGRAM .....................23 EXPLODED VIEW ....................24 EXPLODED VIEW PARTS LIST ................25 REPLACEMENT PARTS LIST................26 SCHEMATIC DIAGRAM ..................PRINTED CIRCUIT BOARD .................. - 2 -...
  • 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 - When using the remote control aim it at the remote control sensor of the set. - There's maybe a defect in consecutive operation of remote control in specified brightness according to this set feature. MUTE POWER Switches the sound on or off.
  • Page 5 <Front Panel Controls> ON/OFF TV/AV MENU Main Power Button MENU Displays on screen menus one by one. Remote Control Sensor Exits the current menu. Memorizes menu changes. Power Standby Indicator (Programme Up/Down) TV/AV Button Illuminates red in standby selects a programme or a menu item. Selects the TV, AV, Component, mode, Illuminates green switches the set on from standby.
  • Page 6 <Back Panel> A A V5 COMPONENT COMPONENT AUDIO AUDIO AC INPUT (MONO) (MONO) S-VIDEO S-VIDEO VIDEO VIDEO AUDIO AUDIO A A V1 Antenna HDMI RGB INPUT AUDIO AUDIO AUDIO INPUT A A V4 A A V2 V VARIABLE ARIABLE AUDIO OUT AUDIO OUT REMOTE RS-232C INPUT...
  • Page 7 Accessories Accessories Accessories MUTE POWER TV/AV MULTIMEDIA I/II LIST MENU Q.VIEW TEXT SLEEP REVEAL MODE SIZE UPDATE TIME HOLD INDEX Remote Control handset Owner’s Manual 2-Eye Bolts 1.5V Alkaline batteries Power Cord 2-Wall brackets Joinning the set assembly to the wall to protect the set tumbling - Secure the set assembly by joinning it to a wall by using the Eye Bolts/Wall brackets.
  • Page 8: Specifications

    1) Performance : LGE TV test method followed. 2) Demanded other specification Safety: CE, IEC specification EMC : CE, IEC Model Name Market Remark 42PX2RVA-ZC Safety : IEC/EN60065, EMI : EN55013, EMS : EN55020 General Specification 1. Module Specification Item Specification Remark...
  • Page 9 2. Model Specification Remark Item Specification Market Broadcasting system PAL B/G/I/D/K, SECAM L/L’ Available channel BRAND SECAM VHF/UHF C1~C69 CATV S1~S47 Receiving system Upper Heterodyne PAL, SECAM Scart Jack(3EA) Video input(2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60 S-Video Input(2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60...
  • Page 10: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 3-2. Channel memory Method 1) Select “PDP” and “Hurricane” on Model dialog. And check These instructions apply to the MF-056C Chassis. your connection in Communication dialog. (If your connection is ‘NG’, then set your PORT(COM1,2,3,...) correctly.) 2.
  • Page 11 5-2. Setting of device Each PCB assembly must be checked by check JIG set. (Because power PCB Assembly damages to PDP Module, especially be careful) 4. POWER PCB Assy Voltage Adjustments (Va, Vs Voltage Adjustments) 4-1. Test Equipment : D.M.M. 1EA (Fig.
  • Page 12 6. Auto AV(CVBS) Color Balance Auto adjustment Map(RS-232C) MF-056C : RZ-42PX30 6-1. Requirement Type RS232 - This AV color balance adjustment should be per formed before White Balance Adjustment. Baud Rate Data bit Stop bit Parity 115200 NONE 6-2. Required Equipme Index Cmd1 Cmd2 Data Min Value...
  • Page 13 8. Auto Component Color Balance 10. Default Value in Adjustment mode 8-1. Required Test Equipment 10-1. Auto Color Balance(Component/RGB) 1) Remote controller for adjustment Auto Color Balance(Hex) 2) 802F Pattern Generator (Which has 720p Ypbpr output & PC 1024x768 60Hz with Auto-RGB To Set Standard(0.7Vpp) Vertical 100% Color Bar Pattern as Fig.8)
  • Page 14: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE 1. Power Board 1-1. The whole flowchart which it follows in voltage output state Start check Doesn't the It is identical Is the Interface screen whole come with Power Off signal operated? out? condition? 1. Check the Power Off 2.
  • Page 15 1-2. Sony Power Board Structure T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans - 15 -...
  • Page 16 1-3. Sanken Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 16 -...
  • Page 17 2. No Power (1) Symptom Does’t minute discharge at module. ¯ Non does not come in into the front LED. ¯ (2) Check follow Is plug in power cord? Plug in power cord. Is connect the Line Filter and Power Connect Cable.
  • Page 18 3. Protect Mode (1) Symptom After once shining, it does not discharge minutely ¯ from module The Rely falls(The sound is audible “click”) ¯ It is converted with the color where the front LED ¯ is red from green. (2) Check follow Is normal the Power Is output the normality Low/High Replace Power...
  • Page 19 4. No Raster (1) Symptom Does’t minute discharge at module. ¯ It maintains the condition where the front LED is green. ¯ (2) Check follow Is normal the Power Is output the normality Low/High Replace Power Board? voltage except Stand-by 5V? Board.
  • Page 20 5. In case of occur strange screen into specific mode 5-1. In case of does’t display the OSD (1) Symptom LED is green ¯ The minute discharge continuously becomes ¯ accomplished from module (2) Check follow Is normal the LVDS Is the LVDS cable Replace cable.
  • Page 21 5-2. In case of does’t display the screen into specific mode (1) Symptom The screen does not become the display from specific input mode ¯ (RF, AV, Component, RGB, DVI). (2) Check follow Check the all input mode should become normality display. ¯...
  • Page 22 6. In case of no sound (1) Symptom LED is green ¯ Screen display but sound is not output ¯ (2) Check follow Is normal the SPK Is the SPK cable Replace SPK cable cable? connected well? Cable inserts well. Is normal the RF/ AV/ Operates the IC400? Operates the IC401?
  • Page 23: Block Diagram

    BLOCK DIAGRAM - 23 -...
  • Page 24: Exploded View

    EXPLODED VIEW - 24 -...
  • Page 25: Exploded View Parts List

    SUPPORTER, ASSY AL FILTER RIGHT RZ-42PX12X 7T SKD 4980V01070E SUPPORTER, ASSY AL FILTER LEFT RZ-42PX12X 7T SKD 5230V00019B FILTER(MECH), RT-42PX10 FG401PAA-05 LG CHEMICAL GLASS FILTER MECH 3809V00605B BACK COVER ASSEMBLY, 42PX17/30 CHASSIS CHANGE C/SKD 3301V00085A PLATE ASSEMBLY, ASSY 3300V00552A RZ-42PX30 PLATE TUNER COVER...
  • Page 26: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q203 0TR150400BA CHIP 2SA1504S(ASY) BK KEC Q204 0TR150400BA CHIP 2SA1504S(ASY) BK KEC 0IPRPML001A IC1000 MIC39100 MICREL 3P SOT223 R/TP Q205 0TR387500AA CHIP 2SC3875S(ALY) BK KEC IC1001 0IMCRRH001A BA033FP-E2 3P-SOP,TO252-3 CHIP 2SA1504S(ASY) BK KEC Q206...
  • Page 27 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 28 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 29 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L1129 6200J000013 MLB-321611-0500P-N2 MAG LAYERS R/TP MLB-321611-0500P-N2 MAG LAYERS R/TP L1130 6200J000013 0DL233309AC SAM2333 GREEN:10MCD, RED:6MCD 6200JB8010L MLB-201209-1000L-N2 MAG LAYERS R/TP D1003 L114 D1103 0DL233309AC SAM2333 GREEN:10MCD, RED:6MCD L115 6200JB8010L MLB-201209-1000L-N2 MAG LAYERS R/TP LD101 0DL200000CA...
  • Page 30 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION JK502 6612F00087A UEJ-CV-032 UGCOM EAR JACK 10MM JK600 6612F00087A UEJ-CV-032 UGCOM EAR JACK 10MM ACCESSORIES 3828VA0541F MANUAL,EN/GE/SP/PO/IT/FR/NE/GR 138M TX 6710V00138M REMOTE CONTROLLER,MF056C 6410VBH003C POWER CORD,MP5004(13A)+V1625 6410VEH003C POWER CORD,M2511A-001 VDE/SEMKO 4972V00178A FIXERWALL ASSY PDP SET MISCELLANEOUS 6850J00005B...
  • Page 34 PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM ) POWER(TOP) POWER(BOTTOM) SIDE A/V(TOP) SIDE A/V(BOTTOM) CONTROL(TOP) CONTROL(BOTTOM)
  • Page 35 May, 2005 P/NO : 3828VD0209U Printed in Korea...

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