Akai AM-57

Troubleshooting |
Should
you
have
any
problems
during
the
operation
of
this
amplifier,
please
check
that
all
the
controls
are
set
to
their
proper
positions
and
that
all
the
connections
are
correct
(refer
to
this
manual
for
the
proper
procedures).
If
a
problem
persists
refer
to
the
advice
below.
ifthe
problem
cannot
be
corrected
with
the
instructions
below,
write
down
the
model
and
serial
numbers
and
all
pertinent
data
regard-
ing
warranty
coverage,
as
well
as
a
clear
description
of
the
problem
and
contact
your
nearest
AKAI
service
centre.
Check point |
No
power.
e
Amplifier
connections
are
not
correct.
No
sound.
Check
the
amplifier
connections.
e SPEAKERS switch is set to the wrong position.
Set the switch to the correct position.
e VOLUME control is set to 0.
Set the VOLUME control to the desired position.
e The correct input selector button is not pressed.
Press the correct button.
e The protection system is engaged.
Wait a few seconds.
e The protection system is engaged.
Stop playback as soon as possible, turn off the power, and then
check the speaker cord connections.
Connect a speaker system with an impedance of over 8 ohms or set
the SPEAKERS switch to OFF.
VOLUME
setting
indicates
a
higher
volume
level
e
The
MUTING
switch
is
set
to
ON
=.
_
than
can
be
heard.
Set
the
switch
to
OFF
m.
Humming
noise
is
heard
during
record
playback.
e
Theturntable’s
ground
wire
(if
included)
is
not
connected
or
connec-
tion
cords
are
not
securely
connected.
Connect the ground wire to the yryr terminal and make sure that
the connection cords are connected securely.
Bass
or
stereo
sound
is
not
reproduced
fully.
e
Speakers
are
not
connected
correctly.
Check
the
polarity
of
the
connections.
Deck
will
not
play
back.
e
The
correct
input
selector
button
is
not
pressed.
Press
the
correct
button.
Digital
source
playback
can
not
be
performed.
e
Connections
are
not
correct
or
the
digital
terminals
are
not
used
for
connection.
Check
the
connections
and
change
them
if
necessary.
Connections
should
be
made
with
digital
connection
cords
available
from
your
audio
dealer.
í
e Thecorrectinput selector button (DIGITAL 1 (OPTICAL), 2 or 3) has
not been pressed.
e Press the appropriate button.
BASS,
TREBLE,
BALANCE
or
MODE
controls
are
|
ev
The
DIRECT
OPERATION
switch
is
set
to
SOURCE.
not
effective.
Set
it
to
OFF
(SUBSONIC).
Playback
is
monaural.
e
The
MODE
button
is
set
to
MONO
=
.
.
Set
it
to
STEREO
a
The
woofer’s
diaphragm
vibrates
slowly
during
play-
e
A
warped
record
is
being
played
back.
back.
Set
the
DIRECT
OPERATION
switch
to
the
OFF
(SUBSONIC)
posi-
tion
to
remove
subsonic
noise.
No sound after the power is turned on.
No sound after the power is turned on (even after
playback volume adjustment).
Recording
can
not
be
performed.
Decks
are
not
properly
connected.
Check
the
connections.
:
The
REC
SELECTOR
switch
is
not
set
to
the
appropriate
position.
Set it to the proper position.
Connections are not proper or the digital input and output terminals
are not being used. <
Check the connections and change them if necessary.
Connections should be made with digital connection cords availabie
from your audio dealer. `
The DAT deck is not in the digital recording mode.
Set the deck to the digital recording mode.
The digital source is protected from recording.
Play back the source in the analog mode for recording.
e The DIGITAL 1 (OPTICAL), 2 or 3 input selector button has not been
pressed.
Press the appropriate button.
The REC SELECTOR switch is not set to the appropriate position.
Set the switch to the appropriate position.
Digital recording can not be performed.
Tape dubbing can not be performed.