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APPENDIX
Error Messages
Battery Low!
The battery voltage (for internal memory backup) may be too low. Bring the unit
to your local Yamaha dealer or any other authorized Yamaha service personnel.
Illegal Data!
A data error resulted during reception of MIDI messages. Try transmitting the data
again, or turn the MU50 off and back on again.
MIDI Buffer Full!
Too much MIDI data is being received by the MU50 at one time. Reduce the
amount of data being sent to the MU50.
HOST is OffLine!
This message appears when the host computer is not turned on, the connecting ca-
ble is not properly connected, or the sequencing software is not active.
SysEx Adrs ERROR!
The data of the received System Exclusive message is incorrect. Check the address
of the message and try transmitting again.
SysEx Data ERROR!
The data of the received System Exclusive message is incorrect. Check the data of
the message (as to whether it requires an MSB or LSB header) and try transmitting
again.
SysEx Size ERROR!
The data of the received System Exclusive message is incorrect. Check the size of
the message and try transmitting again.
Check Sum ERROR!
The checksum of the received System Exclusive message is incorrect. Check the
checksum of the message and try transmitting again.
This Parameter isn’t Excl Data
The selected parameter has no System Exclusive value and cannot be displayed
with the Show Exclusive function.
No Parameter
The selected parameter for use with the Show Exclusive function does not exist as
a valid parameter.
Rcv CH is OFF!
The selected parameter for use with the Show Exclusive function cannot be con-
verted to a MIDI message value since the Receive Channel for the Part is off. Set
the Receive Channel to an appropriate value.