Sony MEX-GS600BT Operating Instructions Manual page 45

For App Remote operation:
APP -------- (Application)
 Connection with the application is not made.
– Establish iPhone connection again.
APP MENU (Application Menu)
 Button operation cannot be performed while a
menu on iPhone/Android phone is open.
– Exit the menu on iPhone/Android phone.
APP NO DEV (Application No Device)
 The device with the application installed is not
connected.
– Connect the device, then establish iPhone
connection.
OPEN APP (Open Application)
 The "App Remote" application is not running.
– Start up the iPhone's application.
If these solutions do not help improve the
situation, consult your nearest Sony dealer.
If you take the unit to be repaired because of
CD playback trouble, bring the disc that was
used at the time the problem began.
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