Yamaha MU80 Owner's Manual page 23

GUIDED TOUR
CAUTION!
Do not attempt to use an AC adaptor other than the PA-1207. The use of an incompatible
adaptor may result in irreparable damage to the MU80, and even pose a serious shock
hazard.
Be sure to disconnect the power adaptor from the outlet when the MU80 is not in use.
Power
Adaptor
Amplifier
Speaker System
L/MONO R DC IN MIDI IN-A
MIDI CABLE
PHONES
MIDI OUT
MIDI Keyboard
1 3