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LG 42PX3RVA Service Manual
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LG 42PX3RVA Service Manual

LG 42PX3RVA Service Manual

Chassis : mf-056c
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PLASMA TV
SERVICE MANUAL
CHASSIS : MF-056C
MODEL : 42PX3RVA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
42PX3RVA-ZC
TV/AV
MENU
OK
VOL
PR
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 42PX3RVA

  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : MF-056C MODEL : 42PX3RVA 42PX3RVA-ZC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. TV/AV MENU...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ...................3 DESCRIPTION OF CONTROLS .................4 SPECIFICATIONS ....................9 ADJUSTMENT INSTRUCTIONS ..............11 TROUBLE SHOOTING GUIDE ................15 BLOCK DIAGRAM .....................24 EXPLODED VIEW ....................26 EXPLODED VIEW PARTS LIST ................27 REPLACEMENT PARTS LIST................28 SCHEMATIC DIAGRAM ..................PRINTED CIRCUIT BOARD ..................

  • 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 Remote Control Key Functions Remote Control Key Functions - 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: Current Mode

    Location and Function of Controls Location and Function of Controls <Front Panel Controls> TV/AV MENU TV/AV MENU 1. Remote Control Sensor 6. OK Accepts your selection or displays the current mode. 2. Power Indicator Illuminates red in standby mode, Illuminates green when the (Programme Up/Down) set is turned on.

  • Page 6: Location And Function Of Controls

    Location and Function of Controls Location and Function of Controls - Shown is a simplified representation of the set. - Here shown may be somewhat different from your set. <Back Panel> COMPONENT COMPONENT AUDIO AUDIO AC INPUT (MONO) (MONO) S-VIDEO S-VIDEO VIDEO VIDEO...
  • Page 7 Displayable Monitor Specification Displayable Monitor Specification RGB / HDMI mode RGB / HDMI mode Horizontal Vertical Horizontal Vertical Resolution Resolution Frequency(KHz) Frequency(Hz) Frequency(KHz) Frequency(Hz) 31.468 70.09 31.468 70.09 640x350 640x350 37.861 85.08 37.861 85.08 31.469 70.08 31.469 70.08 720x400 720x400 37.927 85.03 37.927...
  • Page 8 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 Power Cord Alkaline batteries 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 9: Specifications

    1) Performance : LGE TV test method followed. 2) Demanded other specification Safety: CE, IEC specification EMC : CE, IEC Model Name Market Remark 42PX3RVA-ZC Safety : IEC/EN60065, EMI : EN55013, EMS : EN55020 General Specification 1. General Specification Item Specification Remark...
  • Page 10 2. Model Specification( 42PX3RVA-ZA) Item Specification Remark 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 Scart Jack(3EA) PAL, SECAM PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60 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 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 12: Adjustment Method

    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 13 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 14 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 15: 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 16 1-2. Sony Power Board Structure T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans...
  • Page 17 1-3. Sanken Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans...
  • Page 18 2. No Power (1) Symptom Does’t minute discharge at module. Ø Non does not come in into the front LED. Ø (2) Check follow Is plug in power cord? Plug in power cord. Is connect the Line Filter and Power Connect Cable.
  • Page 19 3. Protect Mode (1) Symptom After once shining, it does not discharge minutely Ø from module The Rely falls(The sound is audible “click”) Ø It is converted with the color where the front LED Ø is red from green. (2) Check follow Is normal the Power Is output the normality Low/High Replace Power...
  • Page 20 4. No Raster (1) Symptom Does’t minute discharge at module. Ø It maintains the condition where the front LED is green. Ø (2) Check follow Is normal the Power Is output the normality Low/High Replace Power Board? voltage except Stand-by 5V? Board.
  • Page 21 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 Ø The minute discharge continuously becomes Ø accomplished from module (2) Check follow Is normal the LVDS Is the LVDS cable Replace cable.
  • Page 22 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 Ø (RF, AV, Component, RGB, DVI). (2) Check follow Check the all input mode should become normality display. Ø...
  • Page 23 6. In case of no sound (1) Symptom LED is green Ø Screen display but sound is not output Ø (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 24: Block Diagram

    BLOCK DIAGRAM...
  • Page 25 MEMO...

  • Page 26: Exploded View

    EXPLODED VIEW...

  • Page 27: Exploded View Parts List

    PWB(PCB) ASSEMBLY,MAIN MF-056C H2, RZ-42PX30 6871VSMS36B PWB(PCB) ASSEMBLY,SUB CONT MF056C RZ-42PX30 SKD NO VINYL 6709V00010A POWER SUPPLY ASSEMBLY, PDP 42INCH MF056A 350W YPSU-J006A LG INNOTEK PSU ASSY 6871VSMS18B PWB(PCB) ASSEMBLY,SUB A/V MF056A RT/RZ-42PX40 SIDE A/V SUSAB 4811V00118A BRACKET ASSEMBLY, DECO RZ-42PX10 RF043B SIDE AV...

  • Page 28: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q202 0TR387500AA CHIP 2SC3875S(ALY) KEC Q203 0TR150400BA CHIP 2SA1504S(ASY) KEC 0IPRPML001A IC1000 MIC39100 3P SOT223 R/TP LDO TYPE 2.5V Q204 0TR150400BA CHIP 2SA1504S(ASY) KEC IC1001 0IMCRRH001A BA033FP-E2 ROHM 3P-SOP,TO252-3 R/TP 3.3V CHIP 2SC3875S(ALY) KEC Q205 0TR387500AA...
  • Page 29 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 30 C836 0CE226SF6DC 22UF MVG 16V 20% SMD R/TP C837 0CE226SF6DC 22UF MVG 16V 20% SMD R/TP SW101 140-315A TACT SKHV17910B LG C&D 12V 22UF MVG 16V 20% SMD R/TP C838 0CE226SF6DC SW102 140-315A TACT SKHV17910B LG C&D 12V 0CE226SF6DC 22UF MVG 16V 20% SMD R/TP...
  • Page 31 6200JB8010L MLB-201209-1000L-N2 MAG LAYERS ACCESSORIES L115 6200JB8010L MLB-201209-1000L-N2 MAG LAYERS L119 6200JB8010L MLB-201209-1000L-N2 MAG LAYERS 3828VA0541F MANUAL,OWNERS MF056C EU/42PX3RVA MLB-201209-1000L-N2 MAG LAYERS L120 6200JB8010L 6710V00138M REMOTE CONTROLLER, RZ-42PX30 SPEC. 6200J000013 MLB-321611-0500P-N2 MAG LAYERS 6410VEH003C L1204 POWER CORD, M2511A-001 VDE/SEMKO 2800MM...
  • Page 35 PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM ) SIDE A/V CONTROL...
  • Page 36 Mar., 2005 P/NO : 3828VD0209N Printed in Korea...

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