Roland JV-80 Owner's Manual page 166

I
Write
Mode
I
Protect
Protect
This function prevents data stored
in internal
memory
from being inadvertently erased or
altered.
WRITE
PROTECT
WRITE
IB
OH
PROTECT
IB
Write Protect
ON/OFF
The
protect function
is
effective
when
this
is
set to
ON,
and
is
disabled
when
set to
OFF. Be
sure to
turn
it
OFF
when
writing Patch data
and
Tone
data
from
the card or
temporary
area to internal
memory.
Also turn
it
off
when
overwriting the
interna!
memory
with bulk data received
over MIDI.
This
is
always
set
to
ON
as a default setting
(when
the
power
is
turned on).
[Operation]
change
the
protect
ON/OFF
setting
by
using
|INC|/|DEC].
or
Parameter
Slider
1
.
166