M2500—Owner’s Manual 39
Error messages

While the M2500 is being operated or when the

power is turned on, the MEMORY display may show

one of the following error messages. If this occurs,

refer to the corresponding explanation and take

appropriate action.

An error occurred while receiving MIDI
data.
If an error occurs while receiving MIDI
data, this error message will be dis-
played for several seconds.
The memory buffer became full while
transmitting/receiving MIDI data.
If the memory buffer becomes full while
transmitting/receiving MIDI data, this
error message will be displayed for sev-
eral seconds. If this message appeared
while transmitting MIDI data, turn the
Utility item Eb (MIDI echo back) “ .”
A scene memory store operation was
executed or bulk dump data was
received when memory protect was on.
If you attempt to store a scene memory
or if bulk dump data is received when
memory protect was on, this error mes-
sage will be displayed for several sec-
onds. For details on memory protect,
refer to page 34.
A check sum error occurred while receiv-
ing bulk dump data.
If a check sum error occurs while MIDI
data is being received as a bulk dump,
this error message will be displayed for
several seconds. Check that the MIDI
cable connections and the state of the
transmitting device are appropriate.
The voltage of the internal battery has
fallen below the nominal level (2.5 V), or
has become abnormal.
If the voltage of the internal battery falls
below the nominal value of 2.5 V or if the
battery malfunctions, this error message
will be displayed when the power is
turned on. (When this message is dis-
played, you can press any switch to
return to the normal state.) If this mes-
sage appears, immediately contact your
dealer or a Yamaha service center to
have the battery replaced. The voltage of
the internal battery can also be checked
using the Utility mode “ ” item (see
page 34).
You attempted to recall a scene memory
in which no scene had been stored.
If you attempt to recall a scene memory
in which no scene has been stored, this
error message will be displayed for sev-
eral seconds.
All scene memories contain no data.
This error message will be displayed for
several seconds if, after all scene memo-
ries have been erased in Utility mode,
you attempt to store without specifying a
scene memory number.
* A system error has occurred. (* is the
error number)
If this error message appears, the
M2500 will not operate correctly. Please
contact a Yamaha service center to have
the unit serviced.