LG 42PX4DV Service Manual
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LG 42PX4DV Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : DF-057A
MODEL : 42PX4DV
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
42PX4DV-AA
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 42PX4DV

  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : DF-057A MODEL : 42PX4DV 42PX4DV-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 ....................8 ADJUSTMENT INSTRUCTIONS ...............10 TROUBLE SHOOTING GUIDE ................13 BLOCK DIAGRAM .....................21 EXPLODED VIEW ....................22 EXPLODED VIEW PARTS LIST ................23 REPLACEMENT PARTS LIST................24 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

    GUIDE shows a programme schedule. SLEEP (In Digital mode only) Sets the sleep timer. VCR/DVD BUTTONS Controls a LG video cassette recorder. controls a LG DVD player. Changes the picture format. EXIT INFO Clears all on-screen displays and returns to...
  • Page 5 < Front Panel Controls > < Front Panel Controls > TV/AV MENU Power Button (Programme Up/Down) Selects a programme or a menu item. Remote Control Sensor Switches the set on from standby. TV/AV Button (Volume Up/Down) Selects the Digital, Analogue, Video 1, Video 2, Component Adjusts the volume.

  • Page 6: Specifications

    <Back Panel> A/V INPUT2 A/V INPUT2 S-VIDEO AC INPUT 1. UPGRADE PORT 6. AUDIO/VIDEO IN SOCKETS (A/V INPUT1) This port is used to upgrade the software version and debug Connect the audio/video out sockets of external equipment to without changing the hardware. these sockets.
  • Page 7 Accessories D/A TV INPUT POWER TEXT MUTE LIST Q.VIEW SIZE UPDATE INDEX STILL TIME REVEAL I/II PIP PR- PIP PR+ SWAP PIP INPUT Remote Control handset Owner’s Manual 2-Eye Bolts 1.5V Power Cord Alkaline batteries 2-Wall brackets Fixing the set assembly to the wall to protect the set tumbling - Secure the set assembly by fixing it to a wall by using the Eye Bolts/Wall brackets.

  • Page 8: Specifications

    EMC : CE, IEC Model Name Market Remark 42PX4DV Australia Safety : IEC60065, EN60065 EMC : CISPR 13 Class B General Specification 1. SET(42PX4DV-AA) Specification Item Remark Unit Broadcasting system PAL-B/G, DTV : DVB-T Available Channel VHF : 00~12 UHF : 28~69...
  • Page 9 2. PDP Module(PDP42V7xxxx)(film Filter) Specification Item Remark Unit Display area 920.1(H) * 518.4(V) ± 0.54.8 1005(H) * 597(V) * 61.2(D) ± 1 Outline dimension 852(H) *480(V) Number of Pixels 320(H) * 1080(V) Cell Pitch Color arrngement RGB closed type Weight(net) 14.3 14.8 15.3...

  • Page 10: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object Each PCB Assy must be checked by Check JIG Set before These instructions are applied to all of the PDP TV, DF-057A. assembly. (Especially, be careful Power PCB Assy which can cause Damage to the PDP Module.) 2.
  • Page 11 (3) Vs Adjustment 6. AD9883A-Set Adjustment 1) Connect + terminal of D.M.M to Vs pin of P805 and connect – terminal to GND pin of P805. 6-1. Synopsis 2) After turning RV401, adjust voltage of D.M.M as same as AD9883A-Set adjustment to set the black level and the Gain Va voltage which on label of panel right/top.
  • Page 12 7-2. Connection Diagram of Equipment for Measuring (Automatic Adjustment) COLOR ANALYZER TYPE; CA-100 HDMI signal input PDP MONITOR 216 FULL WHITE MSPG-925 Series <Fig. 7> Connection Diagram of Automatic Adjustment [ [ . RS-232C Command (Automatic Adjustment) RS-232C Command CENTER [CMD ID DATA] (DEFAULT) ja 00 XX...

  • Page 13: Trouble Shooting Guide

    TOUBLE SHOOTING 1. Sanken Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 13 -...
  • Page 14 2. No Power (1) Symptom It is not discharged minutely from the module. ¯ Light does not come in into the front LED. ¯ (2) Check following Is plug in the power cord? Plug in the power cord. Is the Line Filter and Power Connect the Cable.
  • Page 15 3. Protect Mode (1) Symptom After once shining, it does not discharged minutely ¯ from the 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 following Is the Power Board Is output the normality Low/High...
  • Page 16 4. No Raster (1) Symptom It does not discharged from the module. ¯ It maintains the condition where the front LED is green. ¯ (2) Check following Is the Power Board Is output the normality Low/High Replace Power normal? voltage except Stand-by 5V? Board.
  • Page 17 5. In the 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 following Is the LVDS cable Is the LVDS cable Replace the cable.
  • Page 18 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 ¯ (2) Check following Check the all input mode should become normality display. ¯ Check the Video(Main)/Data(Sub), Video(Main)/Video(Sub) should become ¯...
  • Page 19 (5) in case of becomes unusual display from Component, RGB-DTV/PC mode Is the Input voltage, IIC Is the CXA2181Q Communication and Replace the IC (IC401) normal? HV sync normal? Is the Input voltage, IIC Is the AD9883 Communication and Replace the IC (IC501) normal? HV sync normal? Is the Input voltage, IIC...
  • Page 20 6. In case of no sound (1) Symptom LED is green ¯ Screen display but sound is not output ¯ (2) Check following (If HDMI sound is not output, Check the EDID at first) Is the SPK Is theSPK cable Replace SPK cable cable normal? connected correctly?

  • Page 21: Block Diagram

    BLOCK DIAGRAM - 21 -...

  • Page 22: Exploded View

    EXPLODED VIEW - 22 -...

  • Page 23: Exploded View Parts List

    PWB(PCB) ASSEMBLY,MAIN DF-057A AUS 42PX4DV-AA DIGITAL MANUAL 6871VSMH98A PWB(PCB) ASSEMBLY,SUB CONT DF057A 42PX4DV-AA LOCAL KEY B/D 6871VSMQ99A PWB(PCB) ASSEMBLY,SUB TUNER DF057A AUS 42PX4DV-AA SUB ANALOG MANUAL 3501V00220A POWER SUPPLY ASSEMBLY, HURRICANE2 FREE VOLTAGE SANKEN 42” PSU 6871VSMH78A PWB(PCB) ASSEMBLY,SUB A/V DF057A 42PX4DV-AA SIDE AV MANUAL...

  • Page 24: Replacement Parts List

    IC704 IC1001 0IMCRXL004A XC95288XL-10TQG144C XILINX 144P TQFP IC705 0IMMRSS041D K4S641632H-TL75 54P TSOP IC1003 0ICTMLG013A LGDT1901A LG IC 24P SSOP TRAY DPLL IC801 6927V1123AB SOFT WARE,3.00V B8B1 PDP 0IMCRCY002A IC1004 CY2309SXC-1HT CYPRESS SOIC 16P IC802 0IKE704200J KIA7042AF SOT-89 TP 4.2V VOLTAGE...
  • Page 25 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 26 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 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 6210VC0006A 6210VC0006A FBMH3216 HM501NT 3.2X1.6X1.6MM R/TP L1634 SWITCH L1635 6210VC0006A FBMH3216 HM501NT 3.2X1.6X1.6MM R/TP SW101 140-315A TACT SKHV17910B LG C&D 12V L1636 6210VC0006A FBMH3216 HM501NT 3.2X1.6X1.6MM R/TP SW102 140-315A TACT SKHV17910B LG C&D 12V L1637 6210VC0006A FBMH3216 HM501NT 3.2X1.6X1.6MM R/TP TACT SKHV17910B LG C&D 12V...
  • Page 29 JOPT102 6612BBBHN4B TORX179 TOSHIBA S/PDIF OPTICAL RX JACK JOPT103 6612BBBHN4B TORX179 TOSHIBA S/PDIF OPTICAL RX JACK ACCESSORIES 3828VA0505C MANUAL,OWNERS DF057A 42PX4DV-AA 141L TX 6710V00141L REMOTE CONTROLLER,RF052C DT-42PX40 6410VSH001E POWER CORD,BP3110 BIZLINK SAA 2800MM 4972V00178A FIXER, WALL ASSY PDP SET 366-017A PIN,DRAWING SUB D0.3 L1 .
  • Page 35 PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM ) AUDIO SIDE A/V CONTROL(TOP) CONTROL(BOTTOM) TUNER (TOP) TUNER (BOTTOM)
  • Page 36 Apr., 2005 P/NO : 3828VD0193F Printed in Korea...

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