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SECTION 2. ELECTRICAL
❏ ELECTRICAL TROUBLESHOOTING GUIDE
(1) No Power.
Any Key power on.
YES
Is power turnd on?
YES
DISC loading?
YES
Does initial reading occur?
YES
Can disc be played?
YES
Is audio output supplied?
YES
OK
Check power supply circuitry.
NO
Q260, Q380, Q381, IC401
NO
Check loading supply circuitry.
Q350,Q351,CN505, IC401 Pin84
Check laser circuitry.
NO
Check focusing circuitry.
Check tracking servo circuitry.
NO
NO
Check audio circuitry.
IC502,IC601,IC801
- 2-1 -
83
Pin
IC201 Pin2
Q501, IC502
Q501,IC502
Check DISC.
Q501,IC502
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