E-3
TROUBLESHOOTING GUIDE
YES
A voice isn't though an image
appears
NO
NO
YES
YES
YES
YES
NO
NO
NO
Whether does a signal
come to IC352 6th pin
or not?
Whether does a signal
come to IC701 1st pin
or not?
Investigate IC701 peripheral
circui.
Does a signal change at
a volume upgrade/knock
down or not?
Investigate IC1006 28th pin.
Is the voltage of IC352
1st pin DC 8.3V or not?
Investigate ICP505, D505 and
D509.
Investigate headphone jack
(J351) or a peripheral circuit.
Investigate a speaker.
Investigate IC4001 11th pin.
Does a signal come to
CP351 6th pin or not?