Sharp LC-32LB261U Service Manual

32"&42"&50"LCD TV
Service
Service
Service
Description
Table Of Contents..........................................................1
Important Safety Notice...................................................2
Revision List.........................................................3
1. General Specification..................................................4
2. Operating Instructions............................................5
3. Input/Output Specification.......................................6
4. Mechanical Instructions.........................................9
5. Repair Flow Chart...............................................18
6. PCB Layout........................................................25
6.1 Main Board........................................................25
6.2 Power Board..................................................27
6.3 Key Board.....................................................33
6.4 IR Board.......................................................33
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
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
Best Buy LC-32LB261U- LC-42LB261U- LC-50LB261U

TABLE OF CONTENTS

SAFETY NOTICE
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
Page Description
7. Adjustment..............................................................34
7.1 ADC and W/B Adjustment...........................34
7.2 F/W upgrade.................................................35
7.3 DDC upgrade..............................................36
8. Block Diagram........................................................37
9. Schematic.......................................................39
9.1 Main Board....................................................39
9.2 Power Board.................................................53
9.3 Key Board.....................................................63
9.4 IR Board.......................................................64
10. LOCATION Waveform and Voltage..................65
11. Exploded View...............................................68
12. BOM List....................................................77
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