Yamaha qx21 Owner's Manual page 25

ERROR MESSAGES
The QX21
has
a
number
of error
messages
it
will
flash at
you
(along with
a
warning
"beep") should something
go wrong. They
are as followings:
MEMORY
PROTECT
You
have attempted
to enter or
change
data
while
the
memory
protect function
is
ON.
FL
MEMORY
FULL
The QX21 memory
is
full
and can
accept
no more
data.
t t /
NEAR
FULL
Indicates that remaining
memory
capacity
is
less
than
"1" (see
Job
D-6)
during
recording.
RECORD DATA ERROR
t i
C
i
The QX21
has
received record data
it
does
not
know how
to deal with
(illegal
record
data).
EP
ILLEGAL
COMMAND
You
have attempted
to
execute
a
job
incorrectly.
E3
MIDI
HARDWARE
ERROR
This
message
indicates a
hardware problem such
as
ACIA
overrun, framing
error, etc.
t
L
l
MIDI
DATA ERROR
Indicates that a
checksum
error
has been encountered
in
MIDI
reception.
ts
MEMORY
VOLATILE
ERROR
Indicates that the
memory
backup
system has
failed.
24