TROUBLESHOOTING
Turn power on.
Check power supply circuit.
Is power on?NOPN807 PIN5, 6.2V
PN807 PIN7, 5V
IC803 PIN 2, 3.3V
YES
NONO
Does initial read work?Check the DISK turnsCheck the connector
PN801, PN802, PN809
YES
Check the Laser
YES
YES
Check the focus circuit
YES
Check the TRAKING circuit
NO
Does it play?Check the tracking servo circuit.
YES
NO
Does it output audio?Check the PN807 PIN1, 3
OK
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