LG RU-42PX10 Service Manual
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LG RU-42PX10 Service Manual

LG RU-42PX10 Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : RF-043A
MODEL : RU-42PX10/C RU-42PX11/H
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CANADA : http//biz.lgservice.com
USA
: http//www.lgservice.com
: http//lgservice.com/techsup.html

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  • Page 1 CANADA : http//biz.lgservice.com : http//www.lgservice.com : http//lgservice.com/techsup.html PLASMA TV SERVICE MANUAL CHASSIS : RF-043A MODEL : RU-42PX10/C RU-42PX11/H CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Safety Precautions

    If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1MΩ and 5.2MΩ. CANADA: LG Electronics Canada, Inc. 550 Matheson When the exposed metal has no return path to the chassis the Boulevard East Mississauga, Ontario L4Z 4G3 reading must be infinite.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS DESCRIPTION OF CONTROLS ...........4 SPECIFICATIONS..............7 ADJUSTMENT INSTRUCTIONS ..........8 TROUBLE SHOOTING GUIDE ...........12 BLOCK DIAGRAM...............23 EXPLODED VIEW...............26 EXPLODED VIEW PARTS LIST .........27 REPLACEMENT PARTS LIST ..........28 SCHEMATIC DIAGRAM............PRINTED CIRCUIT BOARD ........... - 3 -...

  • Page 4: Description Of Controls

    DESCRIPTION OF CONTROLS Controls Controls - This is a simplified representation of front panel. Here shown may be somewhat different from your TV. - This manual explains the features available on the RU-42PX10 TVs. Front Panel Controls Front Panel Controls ON/OFF TV/VIDEO...
  • Page 5 DESCRIPTION OF CONTROLS Connection Options Connection Options S-VIDEO Input A connection available to provide better picture quality than the video input. VIDEO Input Connects the video signal from a video device. AUDIO Input Use to connect to hear stereo sound from an external device.
  • Page 6 DESCRIPTION OF CONTROLS Remote Control Key Functions Remote Control Key Functions - When using the remote control, aim it at the remote control sensor on the TV. MUTE MUTE POWER POWER Switches the sound on or off. Turns your TV on or off. TVVIDEO TV/VIDEO MULTIMEDIA MTS Selects: TV, Video 1-2, Component...

  • Page 7: Specifications

    SPECIFICATIONS RU-42PX10/20 RU-50PX10/20 MODELS Width (inches / mm) 48.4 / 1210 56 / 1400 27.6 / 701 30.4 / 761.5 Height (inches / mm) 11.4 / 290 11.4 / 290 Depth (inches / mm) Weight (pounds / kg) 66 / 22.9 66 / 29.9...

  • Page 8: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object (2) After installing the Gprobe, [Option -> Connection Setup] or click the icon indicated in the picture and then setup as These instructions apply to the RF-043A Chassis. below the picture. (In case of the port (second one), set to the serial port of the connected PC.
  • Page 9 ADJUSTMENT INSTRUCTIONS Each PCB assembly must be checked by check JIG set. (Because power PCB Assembly damages to PDP Module, especially be careful) 5. POWER PCB Assy Voltage Adjustments (Va, Vs Voltage Adjustments) 5-1. Test Equipment : D.M.M. 1EA 5-2. Connection Diagram for Measuring Refer to Fig 5.
  • Page 10 ADJUSTMENT INSTRUCTIONS 2) After turning RV401, voltage of D.M.M adjustment as (2) Supply Gray Pattern (216 Level Full Size Pattern) signal same as Va voltage which on label of panel right/top. to VIDEO input. (AV2 Input 60Hz) (Deviation; ±0.5V) (Refer to Fig. 6) (3) To adjust, stick sensor to 216 Gray Level Pattern, press 5-4.

  • Page 11: Analog-Rgb Input Is Completed

    ADJUSTMENT INSTRUCTIONS 9. Auto Adjustment Map(RS-232C) 6) If Check Sum is not 53, repeat 3) ~ 4). 7) If Check Sum is 53, DDC data for Analog-RGB input is completed. RF-043A Type RS232 (2) DDC Data input for Digital-RGB(DVI) 1) Connect PC Serial to DVI Cable of jig for DDC Baud Rate Data bit Stop bit...

  • Page 12: 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 13 TROUBLE SHOOTING GUIDE 1-2. Sony Power Board Structure T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans - 13 -...
  • Page 14 TROUBLE SHOOTING GUIDE 1-3. Sanken Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 14 -...
  • Page 15 TROUBLE SHOOTING GUIDE 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 16 TROUBLE SHOOTING GUIDE 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...
  • Page 17 TROUBLE SHOOTING GUIDE 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 18 TROUBLE SHOOTING GUIDE 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 19 TROUBLE SHOOTING GUIDE 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 20 TROUBLE SHOOTING GUIDE (5) In the case of becomes unusual display from RF, AV, Component 480i mode Is normal the Input voltage, IIC Is normal the Replace IC Communication and HV sync? VPC3230? Is normal the Input voltage, IIC Is normal the S2300? Replace IC Communication and HV sync? Is normal the Input voltage, IIC...
  • Page 21 TROUBLE SHOOTING GUIDE (7) In the case of becomes unusual display from RGB DTV mode Is normal the Is normal the Input voltage, IIC Replace IC CXA2101? Communication and HV sync? Is normal the Is normal the Input voltage, IIC Replace IC M52758? Communication and HV sync?
  • Page 22 TROUBLE SHOOTING GUIDE 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.

  • Page 23: Block Diagram

    BLOCK DIAGRAM - 23 -...
  • Page 24 BLOCK DIAGRAM - 24 -...
  • Page 25 NOTES - 25 -...

  • Page 26: Exploded View

    EXPLODED VIEW - 26 -...

  • Page 27: Exploded View Parts List

    FILTER(MECH),LGM42-01 MITSUI 42 ETCHING MESH GLASS FILTER 3809V00444C BACK COVER ASSEMBLY 3809V00444D BACK COVER ASSEMBLY LGERS 3301V00025D PLATE ASSEMBLY,COVER VSC TUNER RU-42PX10 PRESS 3301V00025G PLATE ASSEMBLY,VSC TUNER LGERS 3301V00023D PLATE ASSEMBLY,AV VSC TUNER RU-42PX10 4980V01071A SUPPORTER ASSY,AL MODULE VER. RZ-42PX10...

  • Page 28: Replacement Parts List

    Q1107 0TR387500AA CHIP 2SC3875S(ALY) KEC IC401 0ISO210100B CXA2101AQ 80P VIDEO SIGNAL Q1108 0TR150400BA CHIP 2SA1504S(ASY) KEC 0ICTMLG018A LGDT4410 LG IC 176P QFP TRAY IEP IC500 CHIP 2SA1504S(ASY) KEC Q1109 0TR150400BA IC500 0IZZVC0121A M37136EFSP DIP 52P BK RF 043A Q111 0TR830009BA...
  • Page 29 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q1201 0TR387500AA CHIP 2SC3875S(ALY) KEC Q802 0TR387500AA CHIP 2SC3875S(ALY) KEC Q1202 0TR387500AA CHIP 2SC3875S(ALY) KEC DIODE Q207 0TR387500AA CHIP 2SC3875S(ALY) KEC 0TR387500AA CHIP 2SC3875S(ALY) KEC 0DD226239AA CHIP KDS226 SOT 23 Q208 D100 Q209...
  • Page 30 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D501 0DD226239AA CHIP KDS226 SOT 23 C1058 0CE107SF6DC 100UF MVG 16V M D502 0DD226239AA CHIP KDS226 SOT 23 C1059 0CE477DJ618 470UF STD 35V 20% LD001 0DL200000CA LED,SAM5670(DL 2LRG) C106 0CE227VF6DC 220UF MV 16V 20%...
  • Page 31 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C1233 0CE477SF6DC 470UF MVG 16V 20% C1395 0CH2103K516 10000P 50V K B C124 0CE107SF6DC 100UF MVG 16V M C1397 0CH2103K516 10000P 50V K B C1245 0CH2103K516 10000P 50V K B C1398 0CH2103K516 10000P 50V K B...
  • Page 32 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C290 0CH2103K516 10000P 50V K B C723 0CE226SF6DC 22UF MVG 16V 20% C292 0CH2103K516 10000P 50V K B C727 0CE106SF6DC 10UF MVG 16V 20% C300 0CE476SF6DC 47UF MVG 16V M C737 0CE226SF6DC 22UF MVG 16V 20%...
  • Page 33 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L1005 6140VB0004B COIL,CHOKE 26UH AR615 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% L1006 6140VB0004B COIL,CHOKE 26UH AR616 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% L1007 6140VB0004B COIL,CHOKE 26UH...
  • Page 34 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L1017 6210VC0006A FILTER,EMC FBMH3216 HM501NT L205 6210VC0006A FILTER,EMC FBMH3216 HM501NT L1018 6210VC0006A FILTER,EMC FBMH3216 HM501NT L205 6210VC0005A FILTER,EMC BK2125 HS 750 L1019 6210VC0006A FILTER,EMC FBMH3216 HM501NT L206 6210VC0006A FILTER,EMC FBMH3216 HM501NT 6210VC0006A...
  • Page 35 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION R108 6200JB8010L FILTER,EMC MLB 201209 1000L X1100 6212AB2015B RESONATOR,CRYSTAL HC 49/SM5H 20MHZ X500 6202VDT002D RESONATOR,CRYSTAL SX 1SMD 8.0MHZ 6202VDT002J X600 RESONATOR,CRYSTAL SX 1 13.500000MHZ X600 6202VDB007B RESONATOR,CRYSTAL HC49U 20.250MHZ X700 6202VDT002B RESONATOR,CRYSTAL SX 1 SC14.3MHZ...
  • Page 36 Sep., 2004 P/NO : 3828VD0179D Printed in Korea CANADA: LG Electronics Canada, Inc. 550 Matheson Boulevard East Mississauga, Ontario L4Z 4G3 : LG Electronics Alabama, Inc. P.O.Box 240007, 201 James Record Road Bldg 3 Huntsville, AL 35824...
  • Page 41 MAIN (TOP)
  • Page 42 PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM ) TUNER(TOP) POWER S/W(TOP) POWER S/W(BOTTOM) TUNER(BOTTOM) SIDE A/V(TOP) SIDE A/V(BOTTOM) CONTROL(TOP) CONTROL(BOTTOM)

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Ru-42px10cRu-42px11Ru-42px11h

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