C
YES
Is FER signal output? IC501 Pin 59?
IC501 defective.
NO
Pick up defective.
Connector defective.
YES
Is FZC signal output at IC501 Pin 31
(SENS)?When Fok focus
IC501 defective.NOServo Conform by
FZC signal
FER
SENSE
(ISTAT)
YES
Is Mon signal output by
IC503 Pin 73? Pattern defective between.NO
IC503 Pin 27,36,37,38 and IC601.
Is MDP signal output by
IC503 Pin 75?
YES
Has voltage at disc motor?
(IC502 pin 11, 12 )
NO IC501, 502 defective.
Surrounding circuity defective.
at Start
YES
Disc Motor defective.
Connector defective.
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