External Input 1, 2 Audio; External Input 3 Audio - Zenith ZRY-316 Manual

VDR ELECTRICAL TROUBLESHOOTING GUIDE
9. NO EXTERNAL INPUT 1, 2 AUDIO
NO
Audio output even
When playing DISC
YES
NO
PN304-19~22 Check
audio signals
YES
NO
IC804 – 10, 12
Check audio signals
YES
NO
IC804-9 Check
High?
YES YES
Check IC804 power
And Other circuits
YES
NO
IC802 – 15, 18
Check audio signals
YES
NO
IC802-10 Check
High?
YES
Check IC802 power
And Other circuits
<when playing DISC,
no audio output> check
Check FFC Cable
and VCR part
Check IC804 power
and other circuits
Check /RST-Audio and
power, other circuits
Check IC802 power
and other circuits
Check AV_RST1 and
power, other circuits
3-72 3-72
10. NO EXTERNAL INPUT 3 AUDIO
NO
Audio output even
When playing DISC
YES
NO
PN5401 – 4~6 Check
audio signals
YES
NO
PN304-27~30 :
Check audio signals
YES
NO
PN304-19~22
Check audio signals
YES
NO
IC804 – 10, 12
Check audio signals
YES
NO
IC804-9 Check
High?
YES YES
Check IC804 power
And Other circuits
YES
NO
IC802 – 15, 18
Check audio signals
YES
NO
IC802-10 Check
High?
YES
Check IC802 power
And Other circuits
<when playing DISC,
no audio output> check
Check Audio Cable
Check PN302-5,6
and Front Jack Cable
Check FFC Cable
and VCR part
Check IC804 power
and other circuits
Check /RST-Audio and
power, other circuits
Check IC802 power
and other circuits
Check AV_RST1 and
power, other circuits