Audio Circuit - Philco DVCR101 Service Manual

3. AUDIO CIRCUIT

A. No sound in EE mode
A. a. RF EE
No sound in RF EE
mode.
YES
Is 12V obtained at IC901
pin#58?
YES
Is 5V obtained at IC901
pin#25,40 and IC401 pin#77?
YES
Is the signal supplied to
pin#48 of IC901?
YES
Are CLK and DATA obtained
at IC901 pin#42,43?
YES
Is RF Audio signal output at
IC901 pin#53,57?
YES
Check Output JACK.
NO
NO
NO
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Check POWER
circuit.
NO
Check RF101
Replace IC901
Replace IC901