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LG Flatron L1742P User Manual

LG Flatron L1742P
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COLOR MONITOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS NO. : LM72A
MODEL:
L1742P (L1742P-*FT.A***QPN)
*To apply the MSTAR Chip .
( ) **Same model for Service
Website:http://biz.LGservice.com
Internal Use Only
L1942P(L1942P-*FT.A***QPN)
AUTO/SET VOLUME
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LG Flatron L1742P Specifications

General IconGeneral
Screen Size17 inches
Resolution1280 x 1024
Panel TypeTN
Brightness250 cd/m²
Contrast Ratio700:1
Response Time8 ms
Input ConnectorsVGA, DVI
Aspect Ratio5:4
Viewing Angle160° (horizontal), 160° (vertical)

Summary

SPECIFICATIONS

PRECAUTION

WARNING FOR THE SAFETY-RELATED COMPONENT

Importance of safety components and not modifying original design to prevent hazards.

TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT

Precautions for handling LCD module, preventing damage and ESD.

SERVICING PRECAUTIONS

General Servicing Precautions

Safety measures like unplugging, high voltage testing, chemical use, contact cleaning, and grounding.

DISASSEMBLY-Set

BLOCK DIAGRAM

BLOCK DIAGRAM-POWER

ADJUSTMENT

EDID Configuration and Update

Steps for setting up UserPort and using WinEDID for EDID data modification.

SERVICE OSD

Accessing and Using the Service OSD

Instructions to enter the SVC OSD menu and descriptions of its functions.

TROUBLESHOOTING GUIDE

Troubleshooting "NO POWER" Issue

Flowchart for diagnosing and resolving power-related problems, checking voltages and signals.

Troubleshooting "NO RASTER" with LIPS

Flowchart for diagnosing no raster issues with LIPS, checking power and signals.

Troubleshooting "NO RASTER" with MSTAR

Flowchart for diagnosing no raster issues with MSTAR, checking ICs and signals.

Troubleshooting "TROUBLE IN DPM"

Flowchart for diagnosing DPM issues, checking resistors and sync pulses.

Troubleshooting "POWER" Issues

Flowchart for diagnosing power supply problems, checking fuses, voltages, and waveforms.

Troubleshooting "Raster" Issues

Flowchart for diagnosing raster problems, checking ICs and drain waveforms.

SCHEMATIC DIAGRAM

SCALER Circuit Schematic

Detailed circuit diagram for the scaler IC (U501) and related components.

POWER & WAFER Circuit Schematic

Circuit diagrams for the power supply (SMPS) and EEPROM components.

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