56
Is there CDR/RW signal input
normally? (IC601 pin 33)
Go to “Track Servo is unstable”
Disc recognition is abnormal
Replace IC301 (MICOM)
Is there RECD1,
RECD2 signal output normally?
(IC401 pin 48, 49)
Go to “RF output is abnormal”
YES
YES
NO
NO
Is there
PICK UP (A, B, C, D)
output normally?
(PN401 pin 8, 9, 14, 15)
RF output is abnormal
•
Check the PICK UP FFC.
•
Replace the PICK UP.
Go to “Laser is abnormal”
YES
Is RRF
signal output normal?
(IC401 pin 86)
•
First Recognition try: Over 1.7 Vpp
•
Second Recognition try:
Over 0.5 Vpp
YES
NO
•
Check the connection between
PN401 and IC401.
•
Replace the IC401(CXA2551R).
No
OK