AOC L42W781HS, Service Manual

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42
‟‟
LCD TV AOC L42W781HS
1
Service
Service
Service
Horizontal Frequency
31.5KHz to 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.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
6.3.IR Board
…………………………………………
.......32
6.4.Tuner Board
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..
………………
..
………
.......33
6.5.Key Board
………………………………
.
………
.......35
6.6.Side Board
……………………………
.
………
.......35
7. White-Balance, Luminance Adjustment......................36
8. Block Diagram.
…………
.............................................38
9
. Schematic………………
....
…….……
..
………………
..39
9.1 Main Board
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.
……………..…
.
……………
.
…
.......39
9.2. Power Board
………………….………
.
…………
.......46
9.3.Key Board
……….……….………
.
…………
.......47
9.4. Tuner Board
…………
..
….…….……
.
…………
.........48
9.5. Side Board
………………
.
………..…
.
…………
.......53
10. Exploded View..
………………
.....................
......…..
54
11. BOM list.
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.........................
…..………………
.55
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
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.
…………
.
……
.......5
2.2. To Use The Menu
…
...
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.
……….....
6
2.3. How To Connect
……
.
……………………
.
………
.....15
2.4. Front Panel Control Knobs
………………
.
……….....
18
3. Input/Output Specification
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.
...................…....
19
4. Mechanical Instructions
…………………….............
....21
5. Repair Flow Chart
………………………
.
……
.
……
.....25
6 PCB Layout
……………….
.
………………
..
..….......
29
6.1.Main Board
…………..…………
..
………
.
………
.......29
6.2.Power Board
……………..…………
.
………
.......31