CDR20 harman/kardon
Disc recognition is abnormal
Is thereIs there
CDR/RW signal inputNORECD1, RECD2 signalNO
Go to ORF output is abnormal�
normally?(IC601 pin 33)output normally? (IC401 pin
48,49)
YESYES
Go to OTrack Servo is unstable�Replace IC701 (MICOM)
RF output is abnormal
Is there
PICK UP(A,B,C,D) outputNOYCheck the PICK UP FFC.NO
Go to OLaser is abnormal�
normally? (CN401 pin 8,9,YReplace the PICK UP
14,15)
YES
Is RRF signal
output normal?(IC401 pin 86)NOYCheck the connection between
YFirst Recognition try : Over 1.7 VppCN401 and IC401.
YSecond Recognition try :YReplace the IC401(CXA2551R).
Over 0.5 Vpp
YES
OK
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