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LG Flatron W1941S User Manual

LG Flatron W1941S
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E-mail: http://www.LGEservice.com/techsup.html
COLOR MONITOR
SERVICE MANUAL
MODEL: W1941S (****************) **Sales Market
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
*To apply the MSTAR Chip.
http://www.wjel.net
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LG Flatron W1941S Specifications

General IconGeneral
Screen Size19 inches
Resolution1440 x 900
Panel TypeTN
Brightness300 cd/m²
Response Time5 ms
Viewing Angle (Horizontal)170°
Viewing Angle (Vertical)160°
Aspect Ratio16:10
Input ConnectorsVGA
Power Consumption36W (Typical)
Weight8.8 lbs (4 kg)

Summary

Specifications

LCD Characteristics

Details of the LCD panel, including size, pixel pitch, color depth, and interface.

Optical Characteristics

Covers viewing angles, luminance, and contrast ratio for optimal visual output.

Signal Input

Defines sync signal types, video input voltage levels, and operating frequencies.

Maximum Resolution

Specifies the highest supported screen resolution for the monitor.

Power Supply

Details the monitor's power input voltage and consumption.

Environment

Specifies operating temperature, humidity, and storage conditions.

Dimensions and Weight

Provides the monitor's overall dimensions and weight without packaging.

Safety Precautions

Safety Component Warnings

Highlights critical safety components and replacement guidelines.

LCD Module Handling

Guidelines for safely handling the LCD module with backlight unit.

Electric Shock Hazards

Precautions regarding high voltage and electrical shock during service.

Leakage Current Check

Procedure for checking leakage current for safety compliance.

Servicing Precautions

General Servicing Guidelines

Essential safety guidelines before and during receiver servicing.

ESD Device Handling

Procedures to prevent damage to ES devices from static electricity.

Repair and Soldering Procedures

Soldering Best Practices

Best practices for using soldering irons and materials for repairs.

Component Removal and Replacement

Step-by-step guides for replacing ICs, transistors, diodes, and resistors.

Circuit Board Repair

Timing Chart

Monitor Disassembly

Stand Disassembly

Block Diagrams

Main System Block Diagram

Overview of the monitor's main components and their interconnections.

Power and Inverter Block Diagrams

Diagrams illustrating the power supply and backlight inverter circuits.

Block Diagram Explanations

Descriptions of the video controller, power, and MICOM parts.

LIPS Board Block Diagram

Schematic of the LIPS board, detailing its functional blocks and operation.

Adjustment and EDID Programming

EDID Adjustment Procedure

Procedure for writing and verifying EDID data using the DOS tool.

Service Mode Operations

Troubleshooting Guide

Troubleshooting: No Power

Flowchart for diagnosing and resolving power-related problems.

Troubleshooting: No Raster

Diagnostic steps for display issues, covering LIPS and MSTAR.

Troubleshooting: DPM

Procedure for diagnosing Dynamic Power Management (DPM) problems.

Troubleshooting: Power Supply

Flowchart for identifying and fixing power supply circuit malfunctions.

Troubleshooting: Raster/Lamp

Steps to diagnose and resolve backlight and raster display problems.

Diagrams and Parts Lists

Monitor Wiring Diagram

Illustrates the electrical connections between components.

Monitor Exploded View Diagram

Visual representation of the monitor's parts in an exploded format.

Exploded View Parts List

List of components corresponding to the exploded view diagram.

Replacement Parts Catalog

Schematic Diagrams

Scaler Circuit Schematic

Detailed circuit diagram for the monitor's scaler IC.

Power Supply Schematic

Circuit diagram of the power supply unit.

Inverter Circuit Schematic

Diagram of the backlight inverter circuitry.

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