AOC LE19W037 User Manual

18.5″&21.5″&23.6″LCD TV AOC LE19W037&LE22(24)H037
1
Service
Service
Service
Horizontal Frequency
31~60 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.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
6.2 Power Board………………..…….…….………......34
6.3 LED Board……...…………..…….…….………......44
6.4 Key Board………………………..……..……….......45
6.5 IR Board………………………….……..……….......45
7. Adjustment……..………………………….................46
8. Block Diagram.……...............................................47
9. Schematic Diagram…..…………....………………...49
9.1 Main Board…………………………………...…......49
9.2 Power Board…………..….….……...………….......58
9.3 LED Board………….……..….……...………….......66
9.4 Key Board……………….……….…………….........68
9.5 IR Board……...………….……….…………….........69
10. Exploded View……………………………….…....70
11. BOM List……..……….………………….…………..74
Table of Contents.......……....................................….......1
Important Safety Notice.......................................…….....2
Revision List………………………………………………....3
1. General Specification..............................……...….......5
2. Operating Instructions………………...…….……….......6
2.1 The Use of Remote Control…….…..……….…….......6
2.2 To Use the Menus….....………………….…..…….......7
2.3 How to Connect……..……………….…….……….....17
2.4 Front Panel Control Knobs…….………….……….....19
3. Input/Output Specification…………....................…....20
4. Mechanical Instructions…………………….................22
5. Repair Flow Chart ……………………….…….…….....25
6. PCB Layout ………………..…………………....….......32
6.1 Main Board…………..………………...…….…….......32

AOC LE19W037 Specifications

General

Brand	AOC
Model	LE19W037
Category	LCD TV
Language	English

Summary

Important Safety Notices

General Safety Precautions

Covers essential safety measures, warnings, and cautions for servicing.

Laser Safety Precautions

Specific safety guidelines for products containing laser components.

Handling and Reliability Advice

Recommendations for maintaining product reliability and proper handling.

Revision History

General Specifications

Operating Instructions

Remote Control Usage

Explains how to use the functions of the TV remote control.

Menu Navigation and Settings

Video Settings Adjustment

Audio Settings Adjustment

PC Settings Adjustment

Feature Settings Adjustment

Parental Control Setup

Connection Guide

TV Signal and PC Connections

Instructions for connecting various external devices and PCs to the TV.

Front Panel Controls Overview

Input/Output Specifications

RGB and HDMI Pin Assignments

Pin configuration details for RGB and HDMI input connectors.

Compatible Mode Tables

Lists supported PC and video resolutions and refresh rates.

Mechanical Disassembly Instructions

Troubleshooting Flowcharts

No Power Troubleshooting

Flowchart for diagnosing and resolving no power issues.

No Power On Troubleshooting

Diagnostic steps for when the TV does not turn on.

Abnormal Image Troubleshooting

Flowchart for identifying and fixing display issues like distorted images.

No Image Troubleshooting

Troubleshooting steps for situations where the screen remains blank.

Sound Problems Troubleshooting

Diagnostic guide for issues related to sound or no sound.

Remote Control Malfunction Troubleshooting

Steps to resolve problems with the TV's remote control.

OSD Instability Troubleshooting

Troubleshooting for unstable or non-functional On-Screen Display (OSD).

PCB Layouts

Main Board PCB Layout

Diagram showing the component placement on the main circuit board.

Power Board Schematics (LE19W037)

LED Board Schematics

Key and IR Board Schematics

Factory Adjustment Procedures

System Block Diagram

Main Board Schematic Diagram

Power Board Schematics (LE19W037)

Power Board Schematics (LE22H037/LE24H037)

Power Board Schematics (LE22H037/LE24H037)

Power Board Schematics (LE22H037/LE24H037)

LED Board Schematics (715G4087T01000004W)

LED Board Schematics (715G4614T01000004S)

Key Board Schematic

IR Board Schematic

Exploded View of Components

LE19W037 Bill of Materials

LE22H037 Bill of Materials

LE24H037 Bill of Materials

Bill of Materials (BOM) Overview