Korg A4 User Manual

7.
DIAGNOSTIC
TEST
<
BEFORE
ACTIVATING
THE
TEST
MODE
>
The A4
GTR
and BASS
have
a
test
mode
for
checking
the
unit’s
functions.
When this
test
mode
is
activated,
the
data
in
the
A4 is
not
initialized.
Nevertheless,
the
data
could
be
initialized
by
mistake,
so it
is
advisable
to
save any
user
data to a
MIDI
data
filer.
If
necessary,
the
data in
the A4
can
be returned
to
the
factory
settings
(preload
data) by
carrying
out the
operation
for
setting
preload
data after
this test
mode
is
activated.
The
required
equipment
and
settings
for
the
test
mode
are
pictured
below.
<
SETUP
FOR
TEST
>
<D
INPUT
©
OUTPUT
L/MONO
& R
©
VOLUME
®
EXT.
CONTROL
OUT 1 &
2
©
MIDI IN
& MIDI
OUT
<0.
ACTIVATING
THE
TEST
MODE
>
(1)
Switch
the
power
on
while
at
the
same
time pressing
both
the
[USER/PRESET]
and
[WRITE]
buttons
on the
front
panel.
The
test
mode
will
activate,
and
the
internal
battery
voltage
and
MIDI
circuitry
will
be
checked
automatically.
(2)
In
this
mode,
the
switches
have
the
following
functions:
[WRITE]
:
Press
the
[WRITE]
button
to
start
checking
each
item.
[MODEA]
:
When
[MODEA]
is
pressed,
the
test
moves
ahead
to the
next
item
to be
checked.
[MODEY]
*.
When
[MODEV]
is
pressed,
the
test
moves
back
to
the
previous
item
to be
checked.
11

Korg A4 Specifications

General

Brand	Korg
Model	A4
Category	Amplifier
Language	English