NAD C660 Service Manual page 13

Tray operation is abnormal.
(Tray open/close doesn't work)
Is there Tray control signal intput?
(IC203 pin26)
YES
Is there Tray drive voltage output?
(IC203 pin15, 16)
YES
•Check the Tray Connector (PN203).
•Check the Motor Line and Motor.
•Check the connection of IC110 pin 12.
NO
•Replace the IC320 (M62352).
•Check the communication line between
IC110 and IC320 (MICOM).
Is TRAY_MUTE
NO
signal"L"? (IC203 pin20)
YES
When PN203
is open, Is there Tray drive
signal output?
YES
-13-
NO
• Check the connection of IC322
Pin13
NO
Replace the IC203 (BA5983FM).