Head Cleaning - Philco DVCR101 Service Manual

c. No HIFI playback in record/playback mode(REC MODE)
Check ICD04(DVD) Block
at IC901 pin#9,10,14,
15, 2, 4.
Is there Audio signal?
YES
REC ' H' BASE voltage at
Q409 is 5V? Q201 is 5V?
YES
Is FM OSC signal at IC901
pin#21?
YES
Is FM OSC signal at P401
pin#2?
YES

HEAD CLEANING.

D. No NORMAL AUDIO playback (PLAY MODE)
Is there signal at IC901
pin#53,57?
Check Input LINE1 JACK.
NO
Check Input LINE2 JACK.
Check ICD02(DVD) Block.
NO
Check IC601 pin#22
NO
Replace IC901
NO
Replace DRUM
NO
Voltage at IC901 pin#58 is
Is 5V supplied to pin#25,40
of IC901 and pin#77 of IC401?
Is pin#12 of IC401 0V?
Check P403 and A/C head.
- 28
NO
12V?
YES
NO
YES
NO
Is there Audio signal
Pin#2 of IC401?
YES
NO
YES
Check power circuit.
Check Power circuit.
Check A/C head.
Check IC401 and IC901.