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NO
YES
-1
9
-
YES
NO
Go to “RF output is abnormal”
Disc recognition is abnormal
Is there
CDR/RW signal input
normally?(IC601 pin 33)
Is there
RECD1, RECD2 signal
output normally? (IC401 pin
48,49)
YES
Replace IC701 (MICOM)
Go to “Track Servo is unstable”
NO
NO
Go to “Laser is abnormal”
•Check the PICK UP FFC.
•Replace the PICK UP
RF output is abnormal
Is there
PICK UP(A,B,C,D) output
normally? (CN401 pin 8,9,
14,15)
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
CN401 and IC401.
•Replace the IC401(CXA2551R).
OK
31
CDR20
harman/kardon
Summary of Contents for CDR 20
Page 20: ...3 Troubleshooting Guide In the Initial Lead in Operation Mode 8 20 CDR20 harman kardon ...
Page 21: ...21 CDR20 harman kardon ...
Page 22: ...22 CDR20 harman kardon ...
Page 23: ...23 CDR20 harman kardon ...
Page 37: ... 26 37 harman kardon ...
Page 40: ......
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Page 65: ... 42 LOCATION GUIDE 65 harman kardon ...
Page 66: ... 43 N LOCATION GUIDE 66 CDR20 harman kardon ...
Page 67: ... 44 RECORD TOP SECTION CD RECORD BOTTOM SECTION 67 CDR20 harman kardon ...
Page 68: ... 45 AUDIO BOTTOM SECTION harman kardon ...
Page 69: ... 46 ECTION 69 CDR20 harman kardon ...
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