Onkyo T-488F - Page 15

Trouble-shooting guide
ERS ON ELE LT SS SE EE
Trouble
Cause
Remedy
No power.
Power cord is disconnected. e
Connect power cord.
Buzzing noise on AM, usually conspicu-
ous at night or with a weak station.
® Noise from electrical apparatus such | @
as fluorescent lamps. e
Move set to different location.
Change the position or direction of the loop
antenna.
High pitch noise. | ®
Noise from TV.
® Keep unit away from TV set.
Crackling noise on ‘AM and FM.
Noise caused by turning fluorescent
lamp on and off.
® Move the antenna as far away as possible from
the fluorescent lamp.
Noise
from
automobile
ignition.
®
install
an
outdoor
FM
antenna
as
far
away
as
possible
from
the
road.
AM
stations
cannot
be
received.
AM
loop
antenna
is
not
attached.
|
®@
Connect
the
included
AM
loop
antenna
to
the
AM
antenna terminals.
FM signal strength indicators and stereo
indicator light but sound is distorted and
separation is bad.
Station is too strong. e
Multiple reflection of the radio waves | @
because of tall buildings or mountains.
Change to T-shaped antenna.
Use antenna which has better directivity and
select a point where the distortion is least.
FM signal strength indicators and stereo
indicator flicker and hiss is heard on FM.
Station is too weak. e
Stereo FM broadcasts coveronly about | ©
half the distance of an ordinary broad-
cast.
Install an outdoor FM antenna.
Change the position or direction of the outdoor
antenna.
No station or undesired station is recalled
when a Preset button is pressed.
The RDS function does not work.
The
Power
switch
has
not
been
turned
|
@
The
memory
contents
are
lost
if
the
power
is
not
on
for
a
long
time,
or
the
power
cord
turned
on
and
off
a
few
times
each
month.
Store
has
been
unplugged
for
a
long
time.
all
stations
in
the
memory
again
and
remember
to
turn
power
on
and
off
a
few
times
each
month.
|
It
is
not
RDS
station.
@
Receive
an
RDS
station.
The
reception
station
signalistooweak.
|
©
Install
an
outdoor
FM
antenna.
@
Change
the
position
or
direction
of
the
outdoor
antenna.
Too
much
interference.
@
Move
the
antenna
as
far
away
as
possible
from
the
fluorescent
lamp.
e
possible from the road.
Install an outdoor FM antenna as far away as
The
tuning
steps
by
which
the
tuned
frequency
increases/decreases
have
been
set
at
the
factory
to
the
proper
value
for
the
area
where
each
unit
is
to
be
sold.
If
you
use
the
unit
in
a
country
where
a
different
tuning
step
is
required
or
if
the
broadcast
frequencies
in
your
country
change
so
that
you
can
not
tune
in
radio
stations
precisely,
contact
your
ONKYO
authorized
service
center.
Specifications
A I aL TS a
FM
Tuning Range:
87.50 — 108.00MHz
(50/25kHz steps)
AM:
Tuning Range:
522 — 1611kHz (9kHz steps)
Usable
Sensitivity:
Mono:
10.3dBf,
0.92V,
75
Ohms
IHF
Usable
Sensitivity:
25yuV
0.8nV
75
Ohms
DIN
Image
Rejection
Ratio:
40dB
Stereo:
17.2dBf
2.0uV,
75
Ohms
IHF
IF
Rejection
Ratio:
40dB
20uV
75
Ohms
DIN
Signal-to-Noise
Ratio:
40dB
50dB
Quieting
Sensitivity:
Mono:
16.1dBf
1.7.V
75
Ohms
Total
Harmonic
Distortion:
0.7%
Stereo:
36.1dBf
17uV
75
Ohms
Output
Voltage:
150mV
Capture
Ratio:
1.3dB
Image
Rejection
Ratio:
100dB
General
IF
Rejection
Ratio:
100dB
Power
Supply:
AC
230V,
50Hz
Signal-to-Noise
Ratio:
Mono:
=
85dB
IHF
Dimensions
(W
x
Hx
D):
455
x
90
x
360
mm
Stereo:
77dB
IHF
Weight:
5.2
kg,
11.5
lbs.
Selectivity:
70dB
DIN
(+
300kHz,
40kHz
dev.
Super
Narrow)
AM
Suppression
Ratio:
|
55dB
Total Harmonic Distortion: Mono:
Stereo:
Frequency Response:
Stereo Separation:
0.03% (Wide)
0.07% (Wide)
30 — 15,000Hz (+0.5, —1.0dB)
45dB at 1kHz (Wide)
33dB at 70 — 10,000Hz (Wide)
Output Voltage: 0.75V
Muting Level:
17.2dBf 2.0uV, 75 Ohms
Specifications and features are subject to change without notice.
—14-