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
and 8th pin or not?
Whether does a signal
come to IC301 2nd pin
and 19th pin or not?
Investigate IC301 peripheral
circui.
Does a signal change at
a volume upgrade/knock
down or not?
Investigate IC301.
Is the voltage of IC352
1st pin DC 6.5V or not?
Investigate ICP505, D505 and
D509.
Investigate headphone jack
(J351) or a peripheral circuit.
Investigate a speaker.
Does a signal come to
CP351 6th pin and
11th pin or not?
Investigate IC4001 76th pin,
78th pin and 80th pin.
