AOC e2240Vwa Service Manual

21.5" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents..........................................................1
Table Of Contents..........................................................1
Description
Revision List.................................................................2
Revision List.................................................................2
1. Monitor Specification..................................................4
1. Monitor Specification..................................................3
2. LCD Monitor Description........................................6
2.LCD Monitor Description........................................4
3. Operation Instruction.............................................6
3. Operation Instruction.............................................5
3.1 General Instructions...................................................7
3.1 General Instructions...................................................5
3.2 Control Button....................................................7
3.2 Control Button....................................................5
3.3 Adjusting the Picture..........................................7
3.3 Adjusting the Picture..........................................5
4. Input/Output Specification.......................................11
4. Input/Output Specification.......................................8
4.1 Input Signal Connector.......................................11
4.1 Input Signal Connector.......................................8
4.2 Factory Preset Display Modes...........................12
4.2 Factory Preset Display Modes.........................9
5 Panel Specification..................................................13
5 Panel Specification..................................................10
5.1 Display Characteristics....................................13
5.1 Display Characteristics....................................10
5.2 Optical Characteristics.....................................14
5.2 Optical Characteristics......................................10
5.3 Electrical Characteristics.................................15
5.3 Parameter guide line for CCFL Inverter.................10
6. Block Diagram...............................................17
6 Block Diagram
6.1 Software Flow Chart.........................................17
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
6.2 Electrical Block Diagram.................................19
Page
7. Schematic.................................................... 21
7.1 Main Board..........................................................21
7.2 Power Board.......................................................26
7.3 Light Sensor Board.......................................28
8. PCB Layout..........................................................29
8.1 Main Board.....................................................29
8.2 Power Board........................................................30
8.3 Key Board.......................................................32
8.4 Light Sensor Board........................................32
9. Maintainability........................................................33
9.1. Equipments and Tools Requirement.....................33
9.2. Trouble Shooting................................................34
10. White-Balance, Luminance adjustment.................40
11. Monitor Exploded View...................................42
12. BOM List..............................................................43
11
SAFETY NOTICE
1
AOC e2240Vwa
Horizontal Frequency
30-83 kHz
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