Service manual

CA-31
Flowcharts
Check audio
power supply.
Is +18AUD
voltage present
on pin 9, IC804?
Start
Does Q800 test
OK?
Does DC level
change at pin 14,
IC6000, when
speaker cut-off is
toggled?
Is composite
audio present at
pin 2, ICX2200?
Is composite
audio present at
Comp-In pin of
IC1400(A)?
Is audio present
on LSOut-R/L
pins of
IC1400(A)?
Is audio entering
IC804 at pins 2,
5?
Replace Q800.
Replace IC6000.
Check
composite audio
line.
Does Q1201 test
OK?
Is +9VSIF
present on pin
48, ICX2200?
Replace Q1201.
Check power
supply.
Replace
ICX2200.
Replace IC804.
Replace
IC1400(A).
Check L/R audio
lines.
5. No Audio
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No