AOC L20W431, Service Manual

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20’’ LCD TV Color Monitor AOC L20W431
1
Service
Service
Service
Horizontal Frequency
31.5-49 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
7.1.Main Board…………..………….……….......29
7.2.Power Board……………..………….……….......31
7.3.Tuner Board…………………………….……….......33
7.4.IR Board………………………………………….......36
7.5.Earphone Board………………………..……….......37
7.6.Key Board……………………………….……….......37
8. Block Diagram.……...........................................38
9. Schematic……………...…….……..………………...39
9.1 Main Board…….…………..….…………….….......39
9.2.Power Board…………….……….………….......52
9.3 Tuner Board…………………….…………….......53
10. Exploded View..……………..........................…..57
11. BOM List……………….…………………………….58
12. Different Parts List………….……………………….77
Table Of Contents.......……..............................…........1
Important Safety Notice.......................................……......2
Revision List.…........................................……......3
1. General Specification..............................………........4
2. Operating Instructions…………………….……….......5
2.1. The Use Of Remote Control…….………….…….......5
2.2. To Use The Menu…...…………………….……….......6
2.3. How To Connect…….…………………….……….....12
2.4. Front Panel Control Knobs……………….……….....14
3. Precautions and Notices ……..……………..............15
4. Input/Output Specification…………....................…....16
5. Mechanical Instructions…………………….................18
6. Repair Flow Chart ……………………….…….…….....23
7. PCB Layout ………………..………………....….......29