Sharp 4M-IOM Service Manual - Page 13

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Sharp 4M-IOM Service Manual

SCHEMATIC DIAGRAM AND WAVEFORMS

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Voltages were measured with a 20k ohm tester under the following conditions; supply voltage at AC
1 lo-240V (SO/60 Hz), colour bar signal input from servicing colour bar signal generator, and
adjustment controls at their best positions.
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Waveforms were observed with colour bar signal input from servicing colour bar signal generator and
0
5 ZOmVp-p 20ps/div
Green
9 9Vp-p 20ps/div
R-Out
0
2 7.5Vp-p O.Sms/div
Audio
10 SVp-p 20vs/div
H. Sync (LCl)
0
14 36Vp-p 1 Ops/div
DC-AC Drive
0
3 300mVp-p 2OysIdiv
11 SVp-p 2O@div
0
15
13
0
4
Blue
12 SVp-p 2O@div
0
16
DC-AC Out