Read Harman Kardon CDR 20 (serv.man13) Service Manual online
-13-
Tray operating is abnormal.
Is threre Tray control signal intput?
(IC501 pin26)
(Tray open/close doesn't work)
YES
•Check the connection of IC409 pin 12.
•Replace the IC409(M62352).
•Check the communication line between
•Replace the IC409(M62352).
•Check the communication line between
IC409 and IC701(MICOM).
•Check the Tray Connector(CN701).
•Check the Motor Line and Motor.
•Check the Motor Line and Motor.
NO
NO
Is three Tray drive voltage output?
(IC501 pin15, 16)
YES
YES
YES
•Check the connection of IC701
pin 25.
•Replace the IC301.
NO
Replace the IC501(BA5983FM).
NO
Is TRAY_MUTE
signal"L"?(IC501 pin20)
When CN701
is open, Is there Tray drive
signal output?
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