32″&42″&50″LCD TV Best Buy LC-32LB261U- LC-42LB261U- LC-50LB261U
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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. 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
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
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