HARMAN KARDON CDR25
Instrukcja Serwisowa

CDR25/CDR26

harman/kardon

Disc recognition is abnormal

Is there CDR/RW signal input normally?(IC201 pin 33) YES

NO

Is there RECD1, RECD2 signal output normally? (IC301) YES

NO

Go to �RF output is abnormal�

Go to �Track Servo is unstable�

Replace IC203 (MICOM)

RF output is abnormal

Is there PICK UP(A,B,C,D) output normally? (PN301 pin 8,9, 14,15) YES

NO

�Check the PICK UP FFC. �Replace the PICK UP

NO

Go to �Laser is abnormal�

Is RRF signal output normal?(IC301 pin 82) �First Recognition try : Over 1.7 Vpp �Second Recognition try : Over 0.5 Vpp YES

NO

�Check the connection between PN301 and IC301. �Replace the IC301(CXA3558R).

OK

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