TROUBLE SHOOTING
1. No Picture (sound ok)
Check MAIN R118 Waveform
CVBS Signal? (2Vpp)
YES
NO
Waveform of Digital Board IC001 #191?
YES
Waveform of Digital Board IC500 R/G/B/VM OUT0~#65~68?
YES
Waveform of Digital Board IC500 #41, 42, 43, 44?
YES
Waveform of Digital Board P500 #R/G/B_OUT?
YES
Waveform of CPT socket cathode (RK/GK/BK)?
NO
Check Q003
NO
NO
NO
NO
Check Tuner(TU101) VIDEO output
Check around IC500
Check around IC500
Check around Q505, Q506, Q507
Check IC901G
2. No Sound (picture ok)
<AV1, 2, 3, Component 1 INPUT> |
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Waveform of Digital Board | NO |
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| Waveform of MAIN1 | ||||||
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IC001#9, 10, 11, 12, 13, 14(av1, |
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| Tuner SIF? | ||||||
2, 3) R598, R599(Component1) |
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| each Jack |
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| YES |
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at each Mode? |
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| Waveform of Digital | |||
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| IC001#31? | |||||
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| NO |
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| YES |
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Waveform of Digital Board IC001 |
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#27, 28? |
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| & Q004, Q005 |
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| YES |
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| YES |
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| NO |
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Waveform of MAIN IC652#1,2(L) |
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14, 15(R)? |
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NO
NO
Check around TU101
Check around IC001
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