HCL HCM9LWAN21 User Manual

19"W LCD Color Monitor HCL HCM9LWAN21
1
Service
Service
Service
Horizontal Frequency
30-83 kHz
TABLE OF CONTENTS
Description
Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
Table Of Contents…………………………………………...1
Revision List………………………………………………....2
Important Safety Notice.…….........................……...... 3
1. Monitor Specification..............................…………........4
2. LCD Monitor Description…………………………….......5
3. Operation Instructions....................................…...........6
3.1. General Instructions...........................…....................6
3.2. Control Button…………………………….…...............6
3.3 Adjusting the Picture.................................…..............7
4. Input/Output Specification............……………...............9
4.1. Input Signal Connector............…………....................9
4.2. Factory Preset Display Modes......….........................9
4.3. Panel Specification.....………………........................10
5. Block Diagram….........................................................13
5.1 Software Flow Chart……………………….……….13
5.2.Electrical Block Diagram……………………….......15
6. Schematic……………..............................................17
6.1 Main Board....……….............................................17
6.2 Power Board………………………………………....22
7. PCB Layout..………….............................................25
7.1. Main Board………................................................25
7.2. Power Board….....................................................26
8. Maintainability………...............................................29
8.1.Equipments and Tools Requirement......................29
8.2.Trouble Shooting………........................................30
9. White-Balance, Luminance adjustment………..…...35
10. Monitor Exploded View…………………….…........37
11. BOM List…............................................................38
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

HCL HCM9LWAN21 Specifications

General

Brand	HCL
Model	HCM9LWAN21
Category	Monitor
Language	English

Summary

Service Manual

Safety Notices

Critical safety precautions for servicing the equipment.

Revision History

Important Safety Notice

Monitor Specifications

LCD Monitor Description

Monitor Block Diagram

Overview of the monitor's main functional blocks and connections.

Operation Instructions

General Operation and Connection

Instructions for powering on and connecting the monitor.

Front Panel Control Buttons

Description and function of front panel control buttons.

Picture Adjustment Guide

Input/Output Specifications

Input Signal Connector Details

Pinout details for the input signal connector.

Factory Preset Display Modes

List of supported display resolutions and frequencies.

Panel Specifications

General Panel Features

General features and composition of the LCD panel module.

Optical Characteristics

Electrical Characteristics

Block Diagrams

Software Flow Chart

Flowchart illustrating the monitor's software operation logic.

Main Board Electrical Diagram

Power Board Overview

Schematics

Main Board Schematic

Schematic diagram for the main control board.

Power Board Schematic

Adapter Board Schematic

PCB Layouts

Main Board PCB Layout

Physical layout of components on the main board.

Power Board PCB Layout

Maintainability

Equipment and Tools for Maintenance

List of necessary equipment and tools for maintenance.

Troubleshooting Guide

Main Board Troubleshooting

Troubleshooting guide for issues related to the main board.

Power Board Troubleshooting

White Balance and Luminance Adjustment

Monitor Exploded View

Bill of Materials (BOM)