AOC L27W451B, Service Manual

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27’’ LCD TV AOC L27W451B
1
Service
Service
Service
Horizontal Frequency
31.5KHz-48KHz
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.
7.2 Power Board.…..……..….…..............................39
7.3 Key Board….......................................................42
7.4 IR Board..…................….......................42
7.5 DC-DC Board....…………...............................44
7.6 Earphone Board..…..….....…..........................45
8. Block Diagram..…….........................................46
8.1 Main Board…………………………………..….46
8.2 Power Board..…..…....………………….......47
8.3 Exploded View....……….....................…..48
9. Schematic Diagram………………………...49
9.1 Main Board………..………………………..49
9.2 Power Board.....…...................................61
9.3 Tuner Board...…….......................................63
9.4 Earphone Board………….………………….66
10. BOM List…......................................................67
11. Different Parts List.…..................…....................94
Table Of Contents.......……..............................…........1
Revision List.…........................................……......2
1. Monitor Specification..............................………........3
2. Operating Instructions…………………….……….......5
2.1 The Use Of Remote Control..……………...................5
2.2 The Use Of Teletext……..........…...........…...........6
2.3 Front Panel Control Knobs.…............……...............7
2.4 OSD Operations…...……........................…............8
2.5 How To Connect………..............……………............16
3. Input/Output Specification…………..........................20
3.1 Input Signal Connector………….…..........................20
3.2 RGB Input Signal Timing …….....……......................21
4. Mechanical Instructions…………………..................22
5. Repair Flow Chart ……………………….……….....27
6. White Balance Luminance Adjustment….…........33
7. PCB Layout..………….……………………....….......37
7.1 Main Board….…..…........................................37
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING