AOC 2236VWA Service Manual

21.5" LCD Color Monitor AOC 2236Vwa
1
Service
Service
Service
Horizontal Frequency
30-80 kHz
TABLE OF CONTENTS
Description Page 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
Table Of Contents.......…….................……...........…........1
Revision List.…........................………................……......2
1. Monitor Specification.................................………........3
2.LCD Monitor Description…………………………….......4
3. Operation Instruction…………...................…...........5
3.1 General Instructions.....................................…...........5
3.2 Control Button……………………………..……...........5
3.3 Adjusting the Picture...........................…............5
4. Input/Output Specification............……………............8
4.1 Input Signal Connector............…..……................8
4.2 Factory Preset Display Modes.........................9
5 Panel Specification.....…………………........................10
5.1 Display Characteristics………………………………10
5.2 Optical Characteristics………………………………..10
5.3 Parameter guide line for CCFL Inverter……………..10
6.Block Diagram…….…................………….........11
6.1 Software Flow Chat…….…..........………….........11
6.2 Electrical Block Diagram………...………...…......13
7. Schematic……………………………………………. 15
7.1 Main Board…………..............................................15
7.2 Power Board....……………....................................19
8. PCB Layout..………….......................................21
8.1 Main Board……………......................................21
8.2 Power Board…......................................................22
8.3 Key Board……………….....................................24
9. Maintainability……….......................................25
9.1. Equipments and Tools Requirement.....................25
9.2. Trouble Shooting…………....................................26
10. White-Balance, Luminance adjustment.................31
11.Monitor Exploded View……..……………............33
12. BOM List....……....................................................34
13.Different Parts List……………………………….…..44
Table Of Contents.......…….................……...........…........1
Revision List.…........................………................……......2
1. Monitor Specification.................................………........4
2. LCD Monitor Description…………………………….......5
3. Operation Instruction…………...................…...........6
3.1 General Instructions.....................................…...........6
3.2 Control Button……………………………..……...........6
3.3 Adjusting the Picture...........................…............7
4. Input/Output Specification............……………............8
4.1 Input Signal Connector............…..……................8
4.2 Factory Preset Display Modes.........................9
5 Panel Specification.....…………………........................10
5.1 Display Characteristics………………………………10
5.2 Optical Characteristics………………………………..11
5.3 Parameter guide line for CCFL Inverter……………..12
6.Block Diagram…….…................………….........13
6.1 Software Flow Chart…….…..........………….........13
6.2 Electrical Block Diagram………...………...…......15
7. Schematic……………………………………………. 17
7.1 Main Board…………..............................................17
7.2 Power Board....……………....................................21
8. PCB Layout..………….......................................23
8.1 Main Board……………......................................23
8.2 Power Board…......................................................25
8.3 Key Board……………….....................................27
8.4 USB Board……………..........................................28
9. Maintainability………...............................................28
9.1. Equipments and Tools Requirement.....................29
9.2. Trouble Shooting…………....................................30
10. White-Balance, Luminance adjustment.................36
11.Monitor Exploded View……..……………............38
12. BOM List....……....................................................39

AOC 2236VWA Specifications

General

Screen Size	22 inches
Resolution	1680 x 1050
Panel Type	TN
Aspect Ratio	16:10
Brightness	300 cd/m²
Contrast Ratio	1000:1
Response Time	5 ms
Connectivity	VGA, DVI
Viewing Angle	170° (H) / 160° (V)

Summary

1. Monitor Specification

2. LCD Monitor Description

3. Operation Instruction

3.1 General Instructions

Basic instructions for turning the monitor on/off and connecting the power cord.

3.2 Control Buttons

Explanation of the monitor's control buttons and their functions.

3.3 Adjusting the Picture

4. Input/Output Specification

4.1 Input Signal Connector

Pin assignments for D-Sub and DVI-D input signal connectors.

4.2 Factory Preset Display Modes

5. Panel Specification

5.1 Display Characteristics

Specifications like display area, pixel pitch, colors, brightness, and viewing angles.

5.2 Optical Characteristics

5.3 Parameter guide line for CCFL Inverter

6. Block Diagram

6.1 Software Flow Chart

Flowchart illustrating the monitor's software operation logic.

6.2 Electrical Block Diagram

7. Schematic

7.1 Main Board

Schematic diagram for the main board, showing component layout and connections.

7.2 Power Board

8. PCB Layout

8.1 Main Board

Top and bottom layer PCB layout for the main board.

8.2 Power Board

8.3 Key Board

8.4 USB Board

9. Maintainability

9.1 Equipments and Tools Requirement

List of essential equipment and tools required for servicing the monitor.

10. White-Balance, Luminance adjustment

11. Monitor Exploded View

12. BOM List