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AOC 203P




SERVICE MANUAL

20 LCD MONITOR
AOC 203P




THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY.EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE
ACCURACY OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.




1
AOC 203P

Table of contents

Revision List ------------------------------------------------------------------------------------------------------------------------- 03

1. Monitor Specifications---------------------------------------------------------------------------------------------------------04

2. LCD Monitor Description----------------------------------------------------------------------------------------------------- 05

3. Operation instructions --------------------------------------------------------------------------------------------------------06

3.1 General Instructions -------------------------------------------------------------------------------------------------------06

3.2 Controls and buttons----------------------------------------------------------------------------------------------------06

3.3 Adjusting the Monitor's Display ---------------------------------------------------------------------------------------09

4. Input/Output Specification ---------------------------------------------------------------------------------------------------11

4.1 Input Signal Connector ---------------------------------------------------------------------------------------------------11

4.2 Factory Preset Display Modes ----------------------------------------------------------------------------------------- 12

4.3 Power Supply Requirements ---------------------------------------------------------------------------------------- 12

4.4 Panel Specification ----------------------------------------------------------------------------------------------------- 13

5. Block Diagram ----------------------------------------------------------------------------------------------------------------14

5.1 Monitor Exploded View ----------------------------------------------------------------------------------------------------14

5.2 Software Flow Chart ---------------------------------------------------------------------------------------------------------16

5.3 Electrical Block Diagram ---------------------------------------------------------------------------------------------------18

6. Schematic Diagram -------------------------------------------------------------------------------------------------------------20

6.1 Main Board --------------------------------------------------------------------------------------------------------------------20

6.2 Power Board -------------------------------------------------------------------------------------------------------------------27

7. Layout ------------------------------------------------------------------------------------------------------------------------------ 30

7.1 Main Board ---------------------------------------------------------------------------------------------------------------- 30

7.2 Power Board -------------------------------------------------------------------------------------------------------------- 33

7.3 Key Board ----------------------------------------------------------------------------------------------------------------- 37

8. Maintainability ---------------------------------------------------------------------------------------------------------------- 37

8.1 Equipments and Tools Requirement -------------------------------------------------------------------------------- 37

8.2 Trouble Shooting ----------------------------------------------------------------------------------------------------------- 38

9. Check List--------------------------------------------------------------------------------------------------------------------------44

10. White Balance Adjustment ---------------------------------------------------------------------------------------------- 47

11. EDID Content ------------------------------------------------------------------------------------------------------------------- 48

12. BOM List ----------------------------------------------------------------------------------------------------------------------- 49




2
AOC 203P
Revision List
Version Release Date Revision history TPV model

A00 Jan -17 -2006 Initial Release TA92KAUNKAACN




3
AOC 203P
1. Monitor Specifications

Display Characteristics

Display Type 20 " active matrix Thin Film Transistor Liquid Crystal Display

Panel Type M201UN02 V.3

Viewable Diagonal Area 51 cm / 20"

Native (Maximum) Resolution 1600 x 1200 pixels

Colors 16.7 million

Contrast Ratio 700:1 (typical)

Brightness 250 cd/m