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LG M4200N Service Manual

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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : LW52A
MODEL:
(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
E-mail:http://www.LGEservice.com/techsup.html
M4200N (M4200N-B10C.AH**XF, AH**LF)
Website:http://biz.LGservice.com

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Summary of Contents for LG M4200N

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LW52A MODEL: M4200N (M4200N-B10C.AH**XF, AH**LF) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 SERVICE OSD ............15 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......16 TIMING CHART ............7 WIRING DIAGRAM ..........25 BLOCK DIAGRAM ............8 EXPLODED VIEW...........26 DESCRIPTION OF BLOCK DIAGRAM....10 REPLACEMENT PARTS LIST .......28 ADJUSTMENT ............13 SCHEMATIC DIAGRAM ......... 33 SPECIFICATIONS 1.

  • Page 3: Precautions

    PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. WARNING BE CAREFUL ELECTRIC SHOCK ! • There are some special components used in LCD monitor that are important for safety. These parts are • If you want to replace with the new backlight (CCFL) or marked on the schematic diagram and the inverter circuit, must disconnect the AC adapter...

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this 9. Use with this receiver only the test fixtures specified in service manual and its supplements and addenda, read this service manual. and follow the SAFETY PRECAUTIONS on page 3 of this CAUTION: Do not connect the test fixture ground strap publication.
  • Page 5 General Soldering Guidelines Replacement 1. Use a grounded-tip, low-wattage soldering iron and 1. Carefully insert the replacement IC in the circuit board. appropriate tip size and shape that will maintain tip 2. Carefully bend each IC lead against the circuit foil pad and solder it.
  • Page 6 Circuit Board Foil Repair At Other Connections Excessive heat applied to the copper foil of any printed Use the following technique to repair the defective copper circuit board will weaken the adhesive that bonds the foil pattern at connections other than IC Pins. This technique to the circuit board causing the foil to separate from or involves the installation of a jumper wire on the "lift-off"...

  • Page 7: Timing Chart

    TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Video Front Sync Back Sync MODE H / V Frequency Period Active Porch Duration Porch Resolution Polarity Clock ( E ) ( D ) Time ( A )

  • Page 8: Block Diagram

    BLOCK DIAGRAM(gm1501H)-MAIN BOARD - 8 -...
  • Page 9 DESCRIPTION OF BLOCK DIAGRAM(gm1501)-MAIN BOARD 1. VIDEO SIGNAL PROCESSOR (FORMAT CONVERTER) This section is composed of gm1501H(U402) and peripheral devices. gm1501H(SCALER_U402) have in built u-COM in IC. (1) This IC include A/D Converter, Pre-Amp, PLL Circuit. (2) This IC include TMDS Receiver and LVDS Transmitter. TMDS Receiver is decoding input DVI Signal and LVDS Transmitter is encoding the output Signal.

  • Page 10: Description Of Block Diagram

    BLOCK DIAGRAM(LV-671)-MOTHER BOARD - 10 -...

  • Page 11: Digital

    DESCRIPTION OF BLOCK DIAGRAM(LV-671)-MOTHER BOARD 1. Form Factor Mini-ITX compact mother board 2. CPU Onboard Intel Celeron M 600MHz Package : mBGA479 L2 Cache : none Front side bus : 400MHz Optional Enhanced Intel SpeedStep£ technology support 3. Memory 1 x 184-pin DDR200/266 SDRAM up to 1GB 4 Chipset Intel 852GM and ICH4 5.
  • Page 12 - 12 -...

  • Page 13: Adjustment

    Analog EDID data. Adjustment should be following procedure and after 2) Run alignment program for M4200N on the IBM warming up for a minimum of 30 minutes. compatible PC. 3) Select EEPROM → Analog EDID write command •...
  • Page 14 Windows EDID V1.0 User Manual 2. EDID Read & Write 1) Run WinEDID.exe Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don’t need setup Windows 2000, XP => Need to Port Setup. This program is available to LCD Monitor only. 1.

  • Page 15: Service Osd

    SERVICE OSD ■ Engaging the `in-start' key of the remote control lets you SEREVICE MENU into the Service Menu Model : M4200N V3.03 ■ Description of operation Elapsed Time : - Elapsed time : Time used for back light NVram Inatial...

  • Page 16: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK J601 VOLTAGE CHECK POWER BOARD (18V, 12V, 5V)? CHECK J603 VOLTAGE CHECK POWER BOARD (12V, 24V) ? CHECK X401 CHECK X401 (14.318MHz) ? CHECK J601 CHECK MICOM(U402) 10PIN SUB POWER PORT (SUB POWER) ? 1.
  • Page 17 2. NO RASTER(OSD IS NOT DISPLAY) NO RASTER (OSD IS NOT DISPLAY) CHECK U402 CHECK THE PERIPHERAL IC OUTPUT WAVE? U402 CHECK CHECK WAFER AND POWER INVERTER VOLTAGE BOARD ( 12V,24V)? CHECK CHECK MODULE INPUT MODULE LINK CABLE WAVE? 1. CHECK INVERTER 2.
  • Page 18 3. NO RASTER STATE ON RGB SIGNAL NO RASTER STATE ON RGB SIGNAL REMARK : POWER CHECK POWER CHECK OF BA7657F (U121) : 5VP POWER CHECK OF SCHMITT TRIGGER (U123, U124) : 5VP POWER CHECK OF MC14066B (U122) : 5VP POWER CHECK OF gm1501H (U402) INPUT WAFER CHECK (J101) CHECK...
  • Page 19 4. NO RASTER STATE ON DVI SIGNAL NO RASTER STATE ON DVI SIGNAL REMARK : POWER CHECK POWER CHECK OF gm1501H (U402) INPUT WAFER CHECK (J102) CHECK CHECK THE PERIPHERAL NO IN / OUTPUT SIGNAL gm1501H(U402) I/O gm1501H(U402) SIGNAL? AND SDRAM(U401) NO PROBLEM CHECK THE MODULE CHECK THE INVERTER...
  • Page 20 5. PC 1. No power to the system at all. Power light does not illuminate, fan inside power supply does not turn on. Indicator light on keyboard does not turn on. Make sure power cable is Power cable is unplugged Visually in spect power cable securely plugged in.
  • Page 21 3. System does not boot from hard disk drive, can be booted from CD-ROM drive. Check cable running from disk When attempting to run the to disk controller board. Make Connector between hard drive FDISK utility you get a sure both ends are securely and system board unplugged message, INVALID DRIVE plugged in;...
  • Page 22 6. Screen message says "Invalid Configuration" or "CMOS Failure" Incorrect information entered Check the configuration Review system's equipment. into the configuration (setup) program. Replace Make sure correct information program incorrect information is in setup 7. Screen is blank. Check the power connectors to monitor and to system.
  • Page 23 10. Keyboard failure. Reconnect keyboard. Check Keyboard is disconnected keys again, if no improvement replace keyboard 11. No color on screen. If possible, connect monitor to Faulty Monitor another system. If no color replace monitor CMOS incorrectly set up Call technical support 12.
  • Page 24 14. Missing operating system on hard drive CMOS setup been Run setup and select correct changed drive type 15. Cartain keys do not function Keys jammed or defective Replace keyboard - 24 -...

  • Page 25: Wiring Diagram

    - 25 -...

  • Page 26: Exploded View

    EXPLODED VIEW - 26 -...

  • Page 27: Exploded View Parts List

    Main Total Assembly, M4200N BRAND LW52A LGESP PPB-C/SKD 48159K0004A Plate Assembly, BOTTOM - PC OPTION GUIDE ASSY (M4200N) 48159K0004B Plate Assembly, BOTTOM - PC OPTION GUIDE ASSY (M4200N C/SKD) 49519K0135A Plate Assembly, PLATE - PC OPTION COVER 49519K0135B Plate Assembly, PLATE - PC OPTION COVER (C/SKD) 6744BSUN18A HDD, ST380012ACE 3.5INCH 80.0GB ULTRA ATA_66_100 INNER 7200RPM...

  • Page 28: Replacement Parts List

    REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2006. 04. 01. DATE: 2006. 04. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 29 DATE: 2006. 04. 01. DATE: 2006. 04. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C584 0CH3103K516 C2012Y5P1H103KT 10nF 10% 50V ZD1001 0DZ360009EB UDZS3.6B 3600MV 3.6TO3.845V C585 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 1 ZD105 0DZ560009DA UDZS5.6B 5600MV 5.49TO5.73V...
  • Page 30 DATE: 2006. 04. 01. DATE: 2006. 04. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L515 6210TCE001G HH-1M3216-501JT 500OHM 3.2X1 R138 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10 L601 6210TCE001G HH-1M3216-501JT 500OHM 3.2X1 R139 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10...
  • Page 31 DATE: 2006. 04. 01. DATE: 2006. 04. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R417 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W R580 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W R419 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 20 R581 0RJ1002D677...
  • Page 32 DATE: 2006. 04. 01. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RJ8200D677 MCR03EZPJ821 820OHM 5% 1/10W 0RJ8200D677 MCR03EZPJ821 820OHM 5% 1/10W 0RJ1501D677 MCR03EZPJ152 1.5KOHM 5% 1/10 0RJ1501D677 MCR03EZPJ152 1.5KOHM 5% 1/10 0RJ2001D677 MCR03EZPJ202 2KOHM 5% 1/10W 0DZ560009DA UDZS5.6B 5600MV 5.49TO5.73V 0DZ560009DA UDZS5.6B 5600MV 5.49TO5.73V 0DZ560009DA...

  • Page 33: Schematic Diagram

    SCHEMATIC DIAGRAM 1. DSUB / DVI-D - 33 -...
  • Page 34 2. SCALER (gm1501) - 34 -...
  • Page 35 3. FAN CONTROL / RS232C / OUTPUT CONNECTOR - 35 -...
  • Page 36 4. POWER / CONNECTOR - 36 -...
  • Page 37 Apr. 2006 P/NO : 38289S0041 Printed in Korea...

This manual is also suitable for:

M4200n-b10c.ah**lf)M4200n-b10c.ah**xf

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