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LG Flatron W2242T

LG Flatron W2242T
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COLOR MONITOR
SERVICE MANUAL
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS NO. : LM73A
MODEL: W2242T(W2242T-SFT.A***Q*)
W2242T(W2242T-BFT.A***Q*)
( ) **Same model for Service
Internal Use Only
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LG Flatron W2242T Specifications

General IconGeneral
Screen Size22 inches
Resolution1680 x 1050
Aspect Ratio16:10
Panel TypeTN
Brightness300 cd/m²
Contrast Ratio1000:1
Response Time5 ms
Viewing Angle (Horizontal)170°
Viewing Angle (Vertical)160°
Input ConnectorsD-Sub, DVI-D
Power Consumption (Standby)1 W

Summary

Specifications

LCD Characteristics

Details of the Thin Film Transistor Color LCD Module, including active display area and pixel pitch.

Optical Characteristics

Specifications for viewing angle, luminance, and contrast ratio.

Signal Input Specifications

Sync signal type, video input signal details, and frequency ranges.

Maximum Resolution

Supported analog and digital display resolutions.

Power Supply Details

Power adapter input and power consumption by mode.

Environmental Operating Conditions

Recommended temperature and humidity ranges for operation.

Physical Dimensions

Width, depth, and height of the monitor with tilt.

Product Weight

Net and gross weight specifications.

Safety and Handling Precautions

Safety-Related Component Warnings

Importance of specific safety components and original parts for preventing hazards.

LCD Module Handling Guidelines

Precautions for mounting, pressing, scratching, and grounding the LCD module.

Electric Shock Hazards

Warnings about high voltage, especially with inverter circuits.

Servicing Tool Safety

Recommendation to use plastic screwdrivers to prevent shock during service.

Servicing Procedures

General Servicing Precautions

Standard procedures for unplugging, testing, and cleaning during service.

Electrostatic Discharge (ESD) Protection

Techniques to prevent damage to sensitive electronic components from static electricity.

Soldering and Component Replacement

General Soldering Guidelines

Guidelines for proper soldering iron use, solder type, and cleaning.

IC, Transistor, and Diode Replacement

Methods for removing and replacing Integrated Circuits, transistors, and diodes.

Fuse and Resistor Replacement

Steps for replacing fuses and conventional resistors.

Circuit Board Foil Repair

Repairing Damaged Copper Traces

Techniques for repairing damaged copper traces on printed circuit boards using jumper wires.

Timing Chart

Video and Sync Timing Parameters

Detailed table of horizontal and vertical timing specifications for various display modes.

Disassembly and Block Diagrams

Monitor Disassembly Steps

Illustrated guide on how to take apart the monitor unit.

System Block Diagram

Overview of the main functional blocks and interconnections.

Description of Block Diagram Components

Explanation of the Video Controller, Power, and MICOM parts.

LIPS Board Block Diagram

Block diagram and description of the power supply board (LIPS).

Adjustment and Calibration

Port Setup for Adjustment Software

Procedure for configuring the system to run adjustment utilities.

EDID Data Management

Instructions for reading and writing Extended Display Identification Data.

Service OSD Menu

Accessing the Service OSD

Steps to enter the special service On-Screen Display menu.

Cable Connection for Service

Diagram illustrating the correct cable connections for service operations.

Troubleshooting Guide

No Power Troubleshooting

Diagnostic steps for a monitor that does not power on.

No Raster Troubleshooting (LIPS)

Steps to diagnose lack of display on the LIPS power board.

No Raster Troubleshooting (Main)

Steps to diagnose lack of display on the main board.

DPM Troubleshooting

Diagnostic steps for issues related to the Display Power Management (DPM) function.

Wiring Diagram

Internal Wiring Diagram

Schematic showing internal cable connections between components.

Exploded Views and Parts List

Exploded View of Components

Visual representation of how the monitor is assembled.

Parts List for Exploded View

List of part numbers and descriptions corresponding to the exploded view.

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