46
Refer to “Reset or Power ON”.
Laser Diode is not ON.
YES
Check the cold soldering for
the IC301 and then replace
IC301.
Check the cold soldering for
the IC203 and then replace
IC203.
Check the cold soldering for
the transistor Q302 and then
replace Q302.
Replace the Pick-up.
YES
YES
NO
NO
NO
NO
CD PART
DVD PART
NO
Does the focusing
actuator move up and
down?
Is the PN301
pin 16 about 2V at the
initial power on mode?
Does the
signal appear at IC301
Pin 21?
Is the collector of
transistor Q302 about
2V?
YES
YES
Does the
signal appear at IC301
Pin 26?
C
3V
5V
0V
5V
LD ON
OK