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