AOC WLA190TWE Service Manual

19.5" LCD Color Monitor
Service
Service
Service
Description
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 Buttons..................................................6
3.3 Adjusting the Picture...................................................8
4. Input/ Output Specification.......................................10
4.1. Input Signal Connector........................................10
4.2. Factory Preset Display Modes................................10
4.3. Panel Specification............................................11
5. Block Diagram............................................................13
5.1 Main Board.....................................................13
5.2.Power Board....................................................14
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

TABLE OF CONTENTS

Page Description
6. Schematic.............................................................15
6.1. Main Board.........................................................15
6.2. Power Board..............................................19
6.3. Key Board.................................................21
7. PCB Layout...........................................................22
7.1. Main Board.........................................................22
7.2. Power Board........................................................25
7.3. Key Board............................................................28
8. Maintainability........................................................29
8.1. Equipments and Tools Requirement.....................29
8.2. Trouble Shooting................................................30
9. White-Balance, Luminance Adjustment...............34
10. Monitor Exploded View..................................36
11. BOM List...............................................................38
SAFETY NOTICE
1
AOC WLA190TWE
Horizontal Frequency
30-83 kHz
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