LG Flatron M1721A User Manual

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. : CL-81
MODEL: M1721A (M1721A-BMF.A**NLF)
M1921A (M1921A-BMF.A**NLF)
*( ) **Same model for Service

LG Flatron M1721A Specifications

General

Screen Size	17 inches
Display Type	LCD
Resolution	1280 x 1024
Aspect Ratio	5:4
Brightness	250 cd/m²
Contrast Ratio	500:1
Response Time	8 ms
Input Ports	VGA, DVI
Panel Type	TN
Weight	4.2 kg
Viewing Angle	160° (H) / 160° (V)

Summary

Safety Precautions

Read Safety Precautions Before Servicing

Essential safety warning for technicians before performing maintenance.

Product Specifications

LCD Panel Characteristics

Details of LCD panel type, active area, pixel pitch, and color depth.

System Block Diagram

Block Diagram Component Descriptions

EDID Data Adjustment

EDID Port Configuration

Steps to configure the system port for EDID adjustment.

EDID Data Read/Write Procedure

Procedure for reading and writing EDID data using software.

Analog-to-Digital Converter (ADC) Adjustment

DCXO Calibration for AV2 Input

Guide to setting the DCXO for AV2 video source.

Automated ADC Calibration for AV2

Instructions for automated analog-to-digital conversion calibration.

ADC Adjustment for RGB-PC Input

RGB-PC Signal ADC Calibration

Procedure for calibrating ADC for RGB-PC input signal.

Service On-Screen Display (OSD)

Service OSD Menu Functionality

General Troubleshooting Guide

Circuit Schematics Overview

Connector and Jack Circuit Diagrams

Audio Amplifier Circuit Diagram

Scaler and Memory Circuit Diagram

Main Power Supply Circuit Diagram

Tuner and LVDS Interface Circuit Diagram