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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
Summary of Contents for L27W451B
Page 3: ...27 LCD TV AOC L27W451B 3 1 Monitor Specifications ...
Page 4: ...27 LCD TV AOC L27W451B 4 ...
Page 5: ...27 LCD TV AOC L27W451B 5 2 Operations Instructions 2 1 The Use of Remote Control ...
Page 6: ...27 LCD TV AOC L27W451B 6 2 2 The Use Of Teletext ...
Page 7: ...27 LCD TV AOC L27W451B 7 2 3 Front Panel Control Knobs ...
Page 8: ...27 LCD TV AOC L27W451B 8 2 4 OSD Operations ...
Page 9: ...27 LCD TV AOC L27W451B 9 ...
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Page 16: ...27 LCD TV AOC L27W451B 16 2 5 How to Connect ...
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Page 26: ...27 LCD TV AOC L27W451B 26 The end N A ...
Page 35: ...27 LCD TV AOC L27W451B 35 Fig 4 Fig 5 Fig 6 ...
Page 37: ...27 LCD TV AOC L27W451B 37 7 PCB Layout 7 1 Main Board ...
Page 38: ...27 LCD TV AOC L27W451B 38 ...
Page 39: ...27 LCD TV AOC L27W451B 39 7 2 Power Board 0 ...
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Page 42: ...27 LCD TV AOC L27W451B 42 7 3 Key Board 7 4 IR Board ...
Page 43: ...27 LCD TV AOC L27W451B 43 ...
Page 44: ...27 LCD TV AOC L27W451B 44 7 5 DC DC Board ...
Page 45: ...27 LCD TV AOC L27W451B 45 7 6 Earphone Board ...
Page 47: ...27 LCD TV AOC L27W451Bʳ 47 8 2 Power Board 27 TV Power Board ...
Page 48: ...27 LCD TV AOC L27W451Bʳ 48 8 3 Exploded View ...