LG 42PX4R Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. Plasma TV
  5. 42PX4R
  6. Service manual

LG 42PX4R Service Manual

Chassis: mf-056a
Hide thumbs Also See for 42PX4R:
Table of Contents

Advertisement

Quick Links

Download this manual
PLASMA TV
SERVICE MANUAL
CHASSIS : MF-056A
MODEL : 42PX4R
42PX4R-ZA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
e-mail:http://www.LGEservice.com/techsup.html
TV/AV
MENU
OK
VOL
PR
website:http://biz.LGservice.com

Advertisement

Table of Contents
loading

Related Manuals for LG 42PX4R

Summary of Contents for LG 42PX4R

  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : MF-056A MODEL : 42PX4R 42PX4R-ZA 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 .................. - 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

    These buttons are used for teletext. gramme. For further details, see the ‘Teletext’ section. Note : In teletext mode, the PIP PR +/-, VCR BUTTONS SWAP and PIP INPUT buttons are used for Controls a LG video cassette recorder. teletext function. - 4 -...
  • Page 5 Location and Function of Controls <Front Panel Controls> TV/AV MENU TV/AV MENU 1. Power Button (Programme Up/Down) Switches the set on from standby or off to standby. Selects a programme or a menu item. Switches the set on from standby. 2.
  • Page 6 Location and Function of Controls - Shown is a simplified representation of the set. - Here shown may be somewhat different from your set. - This manual explains the features available on the 42PX4RV series / RT-42PX40 series. <Back Panel> A A V5 S-VIDEO VIDEO...
  • Page 7 Displayable Monitor Specification RGB / HDMI mode Horizontal Vertical Resolution Frequency(KHz) Frequency(Hz) 31.468 70.09 640x350 37.861 85.08 31.469 70.08 720x400 37.927 85.03 31.469 59.94 35.000 66.66 640x480 37.861 72.80 37.500 75.00 43.269 85.00 31.500 60.00 848x480 37.799 70.00 39.375 75.00 31.500 60.00 37.799...
  • Page 8 Accessories TV/AV MULTIMEDIA POWER MODE CABLE FAVOURITE Q.VIEW SIZE POSITION INDEX HOLD TIME REVEAL MODE Owner’s Manual Remote Control handset 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 9: Specifications

    SPECIFICATIONS NOTE : Specifications and others are subject to change without notice for improvement. Application Range This spec is applied to the 42”PDP TV used MF-056A Chassis. 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 ±...
  • Page 10 2. Model Specification Item Specification Remark Market Broadcasting system PAL B/G/I/D/K, NTSC Available Channel BAND NTSC VHF/UHF C1 ~ C69 2 ~83 CATV S1 ~ S47 1 ~ 71 Receiving system Upper Heterodyne Scart Jack(3EA) PAL, SECAM. NTSC Video input(2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60 PAL, SECAM, NTSC...

  • 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-056A Chassis. your connection in Communication dialog. (If your connection is ‘NG’, then set your PORT(COM1,2,3,...) 2.
  • Page 12 2) Connect RS-232C cable and turn on the power. (Use the 5. EDID (The Extended Display special Cable For Sub-program) (If your connection has Identification Data)/ DDC (Display completed, you can see “Ready”) Data Channel) download 5-1. Required Test Equipment 1) Adjusting PC with S/W for writing EDID Data.(S/W : EDID TESTER Ver.2.5) 2) A Jig for EDID Download...
  • Page 13 6. Auto AV(CVBS) Color Balance Auto adjustment Map(RS-232C) Type MF-056A : RT-42PX40/ RZ-42PX40 6-1. Required - This AV color balance adjustment should be performed Baud Rate Data bit Stop bit Parity before white Balance Adjustment 115200 NONE 6-2. Required Equipment Index Cmd1 Cmd2 Data Min Value...
  • Page 14 8. Auto Component Color Balance 9. Default Value in Adjustment mode 8-1. Required Test Equipment 9-1. Auto Color Balance (Component/RGB) 1) Remote controller for adjustment 2) 802F Pattern Generator Auto Color Balance(HEX) (Which has 720p Ypbpr output & PC 1024x768 60Hz with Standard(0.7Vpp) Vertical 100% Color Bar Pattern as Fig.8) Auto-RGB To Set...

  • 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 Is it identical Is the Interface with Power Off screen whole come 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 - 16 -...
  • Page 17 1-3. Sanken, LGIT Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 17 -...
  • 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 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 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 following Is the Power Board 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 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 LED is green Ø The minute discharged continuously becomes Ø 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 The screen does not become the display from specific input mode Ø (RF, AV, Component, RGB, DVI). (2) Check following 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 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: Block Diagram

    BLOCK DIAGRAM - 24 -...
  • Page 25 MEMO - 25 -...

  • Page 26: Exploded View

    EXPLODED VIEW - 26 -...

  • Page 27: Exploded View Parts List

    PWB(PCB) ASSEMBLY,DISPLAY YSUS ASSY HAND INSERT 42”HD 42X3 VER.B 6871QZH056B PWB(PCB) ASSEMBLY,DISPLAY ZSUS ASSY HAND INSERT 42”HD 42X3 VER.B 3091V00739G Cover Assembly, 42PX4R-ZA STEREO E_PHONE 3090V00634 AF-342 ABS LG 3091V00739N CABINET ASSEMBLY, 42PX4R-ZA STEREO E_PHONE LGEFS (SKD) 4980V01128B/ C Supporter, COMPLEX ASSY AL 0.8T TOP 4980V01130B/ C Supporter, COMPLEX ASSY AL 0.8T BOTTOM...

  • Page 28: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q1003 0TR387500AA CHIP 2SC3875S(ALY) BK KEC Q1004 0TR387500AA CHIP 2SC3875S(ALY) BK KEC IC1000 0IPRPML001A MIC39100 MICREL 3P SOT223 R/TP CHIP 2SC3875S(ALY) BK KEC Q101 0TR387500AA 0IMCRRH001A IC1001 BA033FP-E2 ROHM 3P-SOP,TO252-3 Q102 0TR102008AA...
  • 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 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 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 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L1004 6200J000013 MLB-321611-0500P-N2 R/TP 500 OHM L115 6200JB8010L MLB-201209-1000L-N2 R/TP 1000OHM 350MA MLB-321611-0500P-N2 R/TP 500 OHM MLB-201209-1000L-N2 R/TP 1000OHM 350MA L1005 6200J000013 L119 6200JB8010L L1006 6200J000013 MLB-321611-0500P-N2 R/TP 500 OHM L120 6200JB8010L MLB-201209-1000L-N2 R/TP 1000OHM 350MA...
  • Page 33 UEJ-CV-032 10MM VERTICAL TYPE+SHIELD JK600 6612F00087A UEJ-CV-032 10MM VERTICAL TYPE+SHIELD ACCESSORIES 3828VA0525T MANUAL, USER MF056A 151E TX 6710V00151E REMOTE CONTROLLER, 42PX4R-ZA INPUT 64109EP003A POWER CORD, SP-023+IS-14 I-SHENG 6410TBW001B POWER CORD, SP60+IS14 I-SHENG BSI 1870MM 4972V00178A FIXER, WALL ASSY PDP SET MISCELLANEOUS...
  • Page 37 PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM ) SIDE A/V CONTROL(TOP) CONTROL(BOTTOM) INDEX(TOP) INDEX(BOTTOM)
  • Page 38 Dec., 2005 P/NO : 38289S0052A Printed in Korea...

This manual is also suitable for:

42px4r-za

Table of Contents