TROUBLESHOOTING
In case of trouble, check the following before calling
for
service:
1.
Are
the
connections
made
properly?
2.
Are
you
operating
the
unit
properly
following
the
user's gUide?
3.
Are
the
power amplifiers
and
speaker
working
properly?
If
the
unit
does
not
operate
properly,
check
items
shown
in
the
following
table.
If
your
trouble cannot
be
recovered
with
the
remedy
actions listed
in
the
following
table,
malfunction
of
the
internal
circuitry
is
suspected; immediately
unplug
the
power
cable
and
contact
your
dealer,
nearest Marantz
authorized
dealer
or
the
Marantz Service
Center
in
your
country.
S.DIRECT
F/P
T.MODE
MUTE
lfta
...
nlz
ENGLISH
HOW
TO
RESET
THE
UNIT
Should
the
operation
or
display
seem
to
be
abnormal,
reset
the
unit
with
the
following
procedure.
The
SR4023
is
turned
on,
press
and
hold
the
MUTE
and
S.DIRECT buttons simultaneously
for
3seconds
or
more.
Remember
that
the
procedure
will
reset
the
settings
of
the
function selector, TUNER PRESET etc.,
to
their
initial settings.
SYMPTOM
CAUSE
REMEDY
SR4023
cannot
be
turned
up.
The
power
plug
is
not
connected.
Connect
the
power
plug
to
the
outlet.
No
sound
and
picture
are
output
even
Mute
is
on.
Cancel
mute
using
the
remote
control
when
power
is
on.
unit.
The
input
cable
is
not
connected
See
the
connection
diagram
and
connect
correctly.
the
cables
correctly.
The
master
volume
control
is
turned
all
Adjust
the
master
volume.
the
way
down.
The
function
selector
position
is
wrong.
Select
correct
position.
No
speaker
output.
The
headphones
are
connected
to
the
Disconnect
the
headphones.
(Speakers
headphone
jack.
will
not
output
sound
when
headphones
are
connected.)
Incorrect
Audio
or
Video
for
selected
Input
cable
connected
incorrectly.
Connect
the
cable
correctly
by
referring
source.
to
the
connection
diagram.
FM
or
AM
reception
fails.
Antenna
connection
is
incomplete.
Correctly
connect
the
indoor
FM
and
AM
antennas
to
FM
and
AM
antenna
outlets.
Noise
is
heard
during
AM
reception.
Reception
is
affected
by
other
electrical
Try
changing
location
where
the
AM
fields.
indoor
antenna
is
set
up.
Noise
is
heard
during
FM
reception.
The
radio
waves
from
the
broadcasting
Install
an
FM
outdoor
antenna.
station
are
weak.
Cannot
get
programmed
station
when
Preset
data
has
been
erased.
Disconnecting
power
plug
for
long
the
PRESET
button
is
pressed.
periods
of
time
will
erase
preset
data.
If
that
happens,
input
the
preset
data
again.
Control
with
the
remote
control
unit
fails.
Batteries
are
consumed.
Replace
all
the
batteries
with
new
ones.
Remote
controller's
function-key
setting
Select
different
position
from
which
is
wrong.
equipment
will
be
controlled.
The
distance
between
this
unit
and
the
Move
closer
to
this
unit.
remote
commander
is
too
far.
Something
is
blocking
unit
and
the
Remove
offending
object.
remote
commander.
The
main
unit
and
remote
controller
Set
the
main
unit
and
remote
controller
are
set
to
use
different
remote
control
to
use
the
same
remote
control
code.
codes.
FRONT
KEY
(BUTTON)
LOCK
OF
THE
UNIT
If
the
F/P
and
T.MODE
buttons
on
the
front
panel
are
both
pressed
at
the
same
time
for
three seconds
or
more,
all
the
buttons
on
the
front panel,
(excluding
the
POWER
ON/STANDBY
button),
as
well
as
the
INPUT
SELECTOR
knob
and
VOLUME
knob,
will
become
locked.
"F-KEY
LOCK!"
will
appear
in
the
display.
Release
the
lock
by
pressing
the
same
two
keys
again
at
the
same
time
for
three seconds
or
more.
"F-KEY
UNLOCK"
will
appear
in
the
display,
and
the
keys
will
unlock.
GENERAL
MALFUNCTION
If
the
equipment malfunctions, this
may
be
because
an
electrostatic discharge
or
AC
line
interference
has
corrupted
the
information
in
the
equipment
memory
circuits. Therefore:
disconnect
the
plug
from
the
AC
line
supply
after waiting
at
least
three
minutes,
reconnect
the
plug
to
the
AC
line
supply
re-attempt
to
operate
the
equipment
Memory backup
•
In
case
a
power
outage
occurs
or
the
power
cord
is
accidentally unplugged, this unit
is
equipped
with
a backup
function
to
prevent
memory data such
as
the preset memory
from
being
erased.
19
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