TROUBLE
SYMPTOM
Disc Turning
Track Search
Noise
SHOOTING
DEFECTIVE CIRCUIT
DEFECTIVE POINT
Inferiority Feed Motor Circuit I . Check inner circlelimit SW and CS903 9Din
I
. Check voltage of IC903 7,8pin
. Check voltage of IC651 17, 18pin
. Check Feed Motor and Mechanism
Focus Search Circuit . Check voltage of IC650 16pin
. Check voltage of IC651 11, 12pin
. Check CS602 12, 15pin
. Check pickup
APC
. Check Q601 shorl or open
. CheckIC65062,63pin
I . Check
DiCkUD
I
Disc Motor Circuit . Check IC601 12pin and IC65027pin
. Check IC651 15, 16pin
. Check Disc Motor and Mechanism
Power Supply Circuit . Check IC801 62pin
. CheckQ513, Q507
Tracking Servo Circuit
- Check voltage of TP. TE
. Check IC650 15pin and IC651 13,14pin
. Check pickup
Kick Pulse Circuit . Check IC601 19, 20Dinand IC650 14Din
Feed Motor Circuit . CheckIC65029pin ‘
. Check Feed Motor and Mechanism
RF Circuit . Check waveform of TP RF
Mechanism
I . Check eccentricity of Mechanism and Disc rub
I
Audio Circuit
. Check IC701
. Check Q700
. Check CS603 20,21, 22pin
k.
–34–
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