Roland EV-1-WL Connection Manual page 70

Verify that "*" is shown at the upper right of
AC-22LX MIDI.
AC-22LX MIDI
* If "AC-22LX MIDI" is not shown, tap "SCAN" at the
very bottom of the Bluetooth Devices screen,
and search again.
5.
Tap the Android back button to return
to the previous screen.
6.
Verify that "AC-22LX MIDI" is shown for
"CONNECT".
AC-22LX MIDI
7.
Tap [OK] to start communication.
If you can't connect
Check each of the following five items one at a
time.
1
Make sure that Bluetooth is enabled on the
BOSS Bluetooth® Audio MIDI Dual Adaptor
(Model: BT-DUAL) that's connected to the
AC-22LX