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LG MU-42PM11 Service Manual
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LG MU-42PM11 Service Manual

LG MU-42PM11 Service Manual

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Download this manual See also: Owner's Manual
PLASMA MONITOR
SERVICE MANUAL
CHASSIS : RF-043E
MODEL : MU-42PM11 MU-42PM12X
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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Summary of Contents for LG MU-42PM11

  • Page 1 CANADA : http//biz.lgservice.com : http//www.lgservice.com : http//lgservice.com/techsup.html PLASMA MONITOR SERVICE MANUAL CHASSIS : RF-043E MODEL : MU-42PM11 MU-42PM12X 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 ...........13 BLOCK DIAGRAM...............24 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 Front Panel Controls Front Panel Controls - This is a simplified representation of a typical front panel. The Front Panel Controls shown here may be somewhat different from your monitor. MU-42/50PM10/11 series ON/OFF MU-42/50PM20 series ON/OFF 1.

  • Page 5: Connection Options

    DESCRIPTION OF CONTROLS Connection Options Connection Options - Connection panels shown may be somewhat different from your monitor. Back Connection Panel Back Connection Panel REMOTE RS-232C INPUT DVI INPUT AUDIO INPUT RGB INPUT RGB OUTPUT AC INPUT EXTERNAL SPEAKER (CONTROL/SERVICE) CONTROL (MONO) COMPONENT INPUT...

  • Page 6: Remote Control Key Functions

    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 monitor. - Under certain conditions such as if the remote IR signal is interrupted, the remote control may not function. Press the key again as necessary.

  • Page 7: Specifications

    SPECIFICATIONS MU-42PM12X MU-42PM11/20 MODELS MU-50PM10/11/20 42 / 1066 Width (inches / mm) 49.3 / 1253 25.8 / 656 Height (inches / mm) 29.3 / 745 3.8 / 97.5 Depth (inches / mm) 3.9 / 99.5 64.6 / 29.3 Weight (pounds / kg) 84.7 / 38.4...

  • Page 8: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 4. HDCP Download These instructions apply to the RF-043E Chassis. 4-1. Setting Up the LGIDS (1) Click on ‘setup’ to install in your directory. (2) After installation has completed, check if the file shown on 2.
  • Page 9 ADJUSTMENT INSTRUCTIONS (1) Click on ‘Key Generation (G)’. 4-3. HDCP Download Method (2) Input the number of the key in Generation count. (1) Input power of Stand-By 5V. ex) If 100 Keys are required, then just register 100 and (Download must be executed only when it is on Stand-by) next time it will automatically get 101.

  • Page 10: Required Test Equipment

    ADJUSTMENT INSTRUCTIONS 3) Turn RV501, to adjust the Va voltage to match the value Each PCB assembly must be checked by Check JIG Set marked on the label on the right/top of the panel. before assembly. (Take special note of the Power PCB, which (Deviation;...

  • Page 11: Required Equipment

    5) Operate EDID Read command and check whether (2) Supply Window Pattern signal to DVI input using Pattern Check Sum is as below. Generator. MU-42PM11: CB 1) Input Signal: XGA 60Hz MU-42PM12X/MU-50PM10: DC 2) Input the Window Pattern(Horizontal 25%, Vertical 50%(Top High 25% + Bottom Low 25%)) 6) If Check Sum is not CB(or DC), repeat 3) ~ 4).
  • Page 12 ADJUSTMENT INSTRUCTIONS 9. Auto RGB Color Balance 9-1. Required Test Equipment Pattern Equipment: PC Pattern Generator (VG828, VG854, 801GF, MSP3240A) (16 Gray Scale Pattern output(RGB output Level: 0.7Vp-p) 9-2. Method of Auto RGB Color Balance (1) Input RGB Source : XGA 60HZ 16 Gray Scale Pattern (2) Press ADJ KEY on the S R/C.

  • Page 13: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE 1. Power Board 1-1. General Power Flow 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. Check the Interface condition. signal condition.
  • Page 14 TROUBLE SHOOTING GUIDE 1-2. 3510V00182A Power Board Structure T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans - 14 -...
  • Page 15 TROUBLE SHOOTING GUIDE 1-3. 3501V00180A Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 15 -...

  • Page 16: No Power

    TROUBLE SHOOTING GUIDE 2. No Power (1) Symptom No indication of Power. ¯ No front LED. ¯ (2) Check follow Power cord connected? Plug in power cord. Cable connecting the Line Filter Connect Cable. and Power Switch connected? Is the Power Switch connected to Connect Cable.

  • Page 17: Protect Mode

    TROUBLE SHOOTING GUIDE 3. Protect Mode (1) Symptom Will not fully turn on ¯ The Relay "clicks" ¯ Front LED changes from Green to Red ¯ (2) Check follow Is the Power Board Is output the normality Low/High Replace Power good? voltage except Stand-by 5V? Board.
  • Page 18 TROUBLE SHOOTING GUIDE 4. No Raster (1) Symptom Powers on but, no output on display. ¯ Front LED is green but, no Raster. ¯ (2) Check follow Is the Power Board Is output the normality Low/High Replace Power good? voltage except Stand-by 5V? Board.

  • Page 19: Abnormal Display

    TROUBLE SHOOTING GUIDE 5. Abnormal Display 5-1. No OSD (1) Symptom LED is green ¯ No OnScreen Display ¯ (2) Check follow Check the LVDS Is the LVDS cable Replace cable. cable? connected well? Reset cable. Replace Is the VSC Digital Operates the Thine Check Check...
  • Page 20 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 ¯ (AV, Component, RGB, DVI). (2) Check follow Check the all input mode should become normality display. ¯...
  • Page 21 TROUBLE SHOOTING GUIDE (4) Abnormal display in Component 480i mode Are the Input voltage, IIC Is the Video Decoder Replace IC Comm. and HV sync good? VPC3230 good? Is the DeInterlacer Are the Input voltage, IIC Replace IC S2300 good? Comm.
  • Page 22 TROUBLE SHOOTING GUIDE (6) Abnormal display in RGB DTV mode Is normal the Are the Input voltage, IIC Replace IC CXA2101? Comm. and HV sync good? Is normal the Are the Input voltage, IIC Replace IC M52758? Comm. and HV sync good? Are the Input voltage, IIC Is normal the Scaler? Replace IC...

  • Page 23: No Sound

    TROUBLE SHOOTING GUIDE 6. No sound (1) Symptom LED is green ¯ Screen display but no audio ¯ (2) Check follow Check Speaker Is the SPK cable Replace SPK cable cable? connected well? Reset cable. Audio normal on Is the Flat cable IC800 good? IC801 good? RGB/DVI?

  • Page 24: Block Diagram

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

  • Page 26: Exploded View

    EXPLODED VIEW(MU-42PM11) - 26 -...

  • Page 27: Exploded View Parts List

    BACK COVER ASSEMBLY 3301V00043C PLATE ASSEMBLY,3301V00042B PLATE VSC ASSY MU-42PM10 6871VMMU18A PCB ASSEMBLY,MAIN RF-043E MU-42PM10 MAIN DIGITAL B/D MANUAL 6871VSMH21A PCB ASSEMBLY,SUB TUNER RF043E MU-42PM11 ANALOG B/D MANUAL 6871VSMABFA PCB ASSEMBLY,SUB PSW RF043A MAILBU 5020V01009A BUTTON,POWER MZ-42PM10 ABS, AF-303S 1KEY NON 6871VSMG62A...
  • Page 28 EXPLODED VIEW(MU-42PM12X) - 28 -...
  • Page 29 EXPLODED VIEW PARTS LIST Part No. Description 5900V06008B FAN,DCG6015S12B2-RG 60*60*15 7V 1900RPM 6/12V L=500MM 4980V00C49A SUPPORTER,FAN SECC(EGI) DULE MZ-42PM10 4980V00D43A SUPPORTER,FAN SECC(EGI) MZ-42PM10 NCT 6348Q-E042D PDP,42 16:9 1024*768 PDP42X20000.AKLGG 6871QCH038A PCB ASSEMBLY,DISPLAY CTRL ASSY 42X2 CTRL LGDP4023,4013 6871QDH068A PCB ASSEMBLY,DISPLAY YDRV ASSY 42X2 YDRV TOP 6871QDH069A PCB ASSEMBLY,DISPLAY YDRV ASSY 42X2 YDRV BOTTOM 6871QLH037A...

  • Page 30: Replacement Parts List

    CXA2101AQ 80P VIDEO SIGNAL Q1114 0TR387500AA CHIP 2SC3875S(ALY) KEC 0ISTLSG009A M74HC123RM13TR 16P IC403 CHIP 2SA1504S(ASY) KEC Q1115 0TR150400BA IC500 0ICTMLG018A LGDP4410 LG IC 176P Q1116 0TR387500AA CHIP 2SC3875S(ALY) KEC IC5001 0IKE780500Q KIA7805API 3P TO-220 Q1117 0TR387500AA CHIP 2SC3875S(ALY) KEC 0ISH092100B PQ09RD21 4SIP...
  • Page 31 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q302 0TR387500AA CHIP 2SC3875S(ALY) KEC D1301 0DD226239AA CHIP KDS226 SOT-23 Q305 0TR387500AA CHIP 2SC3875S(ALY) KEC D1302 0DD226239AA CHIP KDS226 SOT-23 Q306 0TR387500AA CHIP 2SC3875S(ALY) KEC D1303 0DD226239AA CHIP KDS226 SOT-23 0TR387500AA CHIP 2SC3875S(ALY) KEC...
  • Page 32 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C1074 0CE107SF6DC 100UF MVG 16V M C1391 0CE477SF6DC 470UF MVG 16V 20% C1077 0CE107SF6DC 100UF MVG 16V M C1400 0CE476SF6DC 47UF MVG 16V M C1108 0CE106SF6DC 10UF MVG 16V 20% C1402 0CE476SF6DC 47UF MVG 16V M...
  • Page 33 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C637 C9014 0CE107SF6DC 100UF MVG 16V M 0CE106SF6DC 10UF MVG 16V 20% C651 0CE106SF6DC 10UF MVG 16V 20% JACK C671 0CE106SF6DC 10UF MVG 16V 20% JK200 6612JH003CA JACK,RCA PPJ137 C672 0CE106SF6DC...
  • Page 34 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION AR612 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% L1016 6210VC0006A FILTER,EMC FBMH3216 HM501NT AR613 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% L1017 6210VC0006A FILTER,EMC FBMH3216 HM501NT AR614 0RRZVTA001D...
  • Page 35 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L209 6210VC0005A FILTER,EMC BK2125 HS 750 “ 3828VA0520C MANUAL,OWNERS *LGECI L210 6200JB8010L FILTER,EMC MLB-201209-1000L-N2 6710V00136H REMOTE CONTROLLER L211 6200JB8010L FILTER,EMC MLB-201209-1000L-N2 6410VUH005A POWER CORD,PS204 125V/13A 2800MM 6200JB8010L FILTER,EMC MLB-201209-1000L-N2 L212 6850J00004A...
  • Page 36 Nov., 2004 P/NO : 3828VD0206B 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 42 MAIN(TOP) MAIN(BOTTOM) CONTROL(TOP) CONTROL(BOTTOM) POWER S/W(TOP) POWER S/W(BOTTOM) TUNER(TOP) TUNER(BOTTOM)

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