Roadstar CTV-1015, Руководство по обслуживанию

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3. NO PICTURE (SOUND is OK)
START
END
Check pin 7,8,9 of
IC91 in CPT PCB.
Check the pin 1,2,3
of IC91.
OK?
Check pin 51,52,53
waveforms of IC51.
OK?
Check pin 1,4,5
waveforms of Z101.
OK?
Check pin 38 waveforms
of IC51.
Check the pin 40 waveforms
of IC51.
OK?
Check the waveform of
IF pin of TU01.
OK?
Replace TU01 with new one.
NO
NO
NO
NO
YES
NO
TROUBLE SHOOTING