Sony SEN-280 User manual
I
SONY
Stereo
Component
System
SEN-280
Operating
Instructions
Before
operating
the
unit,
please
read
this
manual
thoroughly.
This
manual
should
be
retained
for
future
reference.
Owner^s
Record
The
modei
and
serial
numbers
are
located
at
the
rear
of
each
model.
Record
the
serial
numbers
in
the
spaces
provided
below.
Refer
to
these
numbers
whenever
you
call
upon
your
Sony
dealer
regarding
these
products.
Model
No.
PS-LX285
Serial
No._
Model
No.
TA-AX285
Serial
No._
Model
No.
ST-JX285
Serial
No._
Model
No.
TC-W285
Serial
No._
1988
by
Sony
Corporation
Table
of
Contents
To
prevent
fire
or
shock
hazard,
do
not
ex¬
pose
the
unit
to
rain
or
moisture.
Getting
started
Precautions.
3
Turntable
assembly
(Canadian
model
only).
3
Connections.
4
Using
your
stereo
Audio
adjustment.
6
Receiving
radio
programs.
6
Automatic
tuning
.
6
Manual
tuning.
6
Memory
preset.
8
Recivjng
a
memorized
station.
8
Scanning
the
memorized
station
.
8
Tape
playback
(on
either
deck
A
or
B).10
Tape
recording
(deck
B).10
Tape
dubbing.12
Playing
record.12
Remote
commander
(Supplied).14
This
symbol
is
intended
to
alert
the
user
to
the
presence
of
uninsulated
“dangerous
voltage"
within
the
prod¬
uct's
enclosure
that
may
be
of
suffi¬
cient
magnitude
to
constitute
a
risk
of
electric
shock
to
persons.
Maintaing
you
stereo
Maintenance.14
Getting
Into
the
details
Specifications.15
This
symbol
is
intended
to
alert
the
user
to
the
presence
of
important
operating
and
maintenance
(servicing)
instructions
in
the-literature
accompa¬
nying
the
appliance.
Troubleshooting
*
Troubleshooting
guide.back
cover
Note
to
CATV
system
installer
This
reminder
is
provided
to
call
the
CATV
system
installer’s
attention
to
Article
820-22
of
the
NEC
that
provides
guidelines
for
proper
grounding
and,
in
particular,
specifies
that
the
cable
ground
shall
be
connected
to
the
grounding
system
of
the
building,
as
close
to
the
point
of
cable
entry
as
practical.
2
Precautions
On
safety
•
Operate
the
stereo
system
only
on
120
V
AC,
60
Hz.
•
Unplug
the
stereo
system
from
the
wall
outlet
if
it
is
not
to
be
used
for
an
extended
period
of
time.
To
disconnect
the
cord,
pull
it
out
by
grasping
the
plug.
Never
pull
the
plug
out
by
the
cord.
•
Do
not
place
anything
on
top
of
the
amplifier.
The
ventilation
holes
must
be
unobstructed
for
the
proper
operation
of
the
unit
and
to
prolong
the
life
of
its
components.
•
Should
any
liquid
or
solid
object
fall
into
the
unit,
unplug
the
stereo
system,
and
have
the
unit
checked
by
qualified
personnel
before
operating
it
any
further.
For
repairs,
take
in
all
the
components
together,
even
if
only
one
needs
repairing.
On
installation
•
Avoid
installing
or
leaving
the
stereo
system
in
a
location:
—
near
heat
sources
such
as
radiators,
airducts
or
heaters
subject
to
direct
sunlight
—
exposed
to
rain
or
moisture
—
where
it
is
liable
to
come
into
contact
with
dust
or
dirt
—
that
is
unventilated,
such
as
a
bookcase
If
you
have
any
question
or
problem
concerning
your
stereo
system
that
is
not
covered
in
this
manual,
please
consult
your
nearest
Sony
dealer.
For
the
customers
in
the
U.S.A.
For
detailed
precautions,
see
the
leaflet
“IMPORTANT
SAFEGUARDS”.
For
the
customers
in
Canada
(—CAUTION;
---
TO
PREVENT
ELECTRIC
SHOCK,
DO
NOT
USE
THIS
POLARIZED
AC
PLUG
WITH
AN
EXTENSION
CORD,
RECEPTACLE
OR
OTHER
OUTLET
UNLESS
THE
BLADES
CAN
BE
FULLY
INSERTED
TO
PREVENT
BLADE
EXPOSURE.
To
change
the
AM
tuning
interval
The
AM
tuning
interval
is
preset
at
the
factory
to
10
kHz
to
match
the
frequency
allocation
system
of
your
country.
To
change
the
interval
to
9
kHz,
proceed
as
follows.
1
Depress
the
POWER
switch
to
turn
on
the
system.
2
Press
the
TUNER
button.
3
Press
the
BAND
FM/AM
selector
to
select
AM.
4
Press
the
POWER
switch
to
turn
off
the
system.
5
While
pressing
the
“+”
TUNING
button,
press
the
POWER
switch
to
turn
it
on.
To
reset
the
interval
to
10
kHz,
follow
the
same
procedure.
Note
When
the
interval
is
changed,
all
stations
memorized
to
the
10-key
station
preset
selector
will
be
erased.
After
changing
the
interval,
be
sure
to
memorize
the
stations
again.
TurntabiG
AsSGmbly
(Canadian
model
only)
3
Connections
The
power
cord
should
be
connected
last
of
all,
first
making
sure
that
the
SYSTEM
POWER
switch
is
turned
off.
The
cable
connectors
should
be
fully
inserted
into
the
connectors.
A
loose
connection
may
cause
hum
and
noise.
Keep
the
speaker
cords,
connecting
cords
and
power
cord
away
from
the
AM
loop
antenna
and
the
tuner’s
antenna
lead-in
to
avoid
possible
noise
pickup.
Conventional
audio
cord
connection
Cord
plugs
and
jacks
are
color
coded.
The
red
plugs
and
jacks
are
for
the
right
channel
(R)
and
white
ones
for
the
left
channel
(L).
O
Speaker
cords
For
left
speaker
The
TA-AX285
has
connectors
for
two
pairs
of
speaker
systems—system
A
and
system
B—which
can
be
selected
individually
or
simultaneously
by
means
of
the
front
panel
SPEAKERS
select
buttons.
No
sound
will
be
heard
if
only
one
of
the
speaker
system
is
connected
and
the
SPEAKERS
select
buttons
A
and
B
are
depressed.
TAAX285
O
AM
loop
antenna
(supplied)
O
Supplied
flat
cord
connection
For
better
AM
reception.
Extend
a
6
to
15-meter
insulated
wire
out
of
doors
O
Connecting
a
CD
player
O
Connecting
a
VCR
VIDEO
AUDIO
IN
O
AC
OUTLET
These
are
used
to
power
other
audio
components
whose
power
consumption
is
less
than
the
wattage
indicated
on
the
AC
outlet.
SWITCHED:
This
outlet
is
controlled
by
the
POWER
switch.
CAUTION;
Do
not
connect
any
electrical
home
appliances
such
as
an
electric
iron,
fan,
TV
or
other
high
wattage
equipment
to
these
AC
outlets.
Turn
VOLUME
clockwise
to
increase
the
sound
level.
Adjust
the
graphic
equalizer
controls
according
to:
To
decrease
it,
turn
the
control
counterclockwise.
•
Personal
preference.
•The
room
acoustics:
For
Instance,
playback
in
a
room
with
To
decrease
the
sound
level
temporarily
padded
walls
or
furniture
will
probably
sound
better
with
Press
MUTING.
The
sound
cannot
be
heard.
the
high
frequencies
boosted.
To
resume
the
original
level,
press
the
button
again.
•
Program
quality.
If
reception
contains
hiss,
cutting
the
high
frequencies
will
improve
reproduction.
Receiving
Radio
Programs
Before
reception,
be
sure
to
connect
the
supplied
AM
and
FM
antenna.
6
I
Graphic
Equalizer
Controls
■
.
To
equalize
the
listening
to
sound,
slide
each
control
upwards
to
increase
the
level
of
the
frequency
band,
and
downwards
to
decrease
the
level.
100
Hz:
Use
to
boost
or
cut
the
bass.
400
Hz:
Use
to
adjust
the
middle
frequency
range.
1
kHz:
Use
to
provide
more
presence
of
vacals.
4
kHz:
Use
to
adjust
the
brightness
of
sound.
12
kHz:
This
control
effects
general
treble.
Slide
downwards
to
reduce
high
frequency
noise,
such
as
tape
hiss.
To
listen
to
the
sound
with
the
original
tone
quality,
set
all
the
controls
at
their
center
positions.
;Balah^Adjusjtmeqt
_
When
speaker
position
is
not
symmetrical,
adjust
the
strength
of
left
and
right
speaker
outputs
with
the
ieft
and
right
graphic
equalizer
controls.
Selecting
the
speaker
system
To
drive
speaker
system
A:
depress
button
A.
To
drive
speaker
system
B:
depress
button
B.
To
drive
both
speakers:
depress
buttons
A
and
B.
Note
When
both
A
and
B
buttons
are
depressed,
two
pairs
of
speaker
system
should
be
connected.
Otherwise,
no
sound
can
be
heard.
For
headphone
listening
only:
keep
both
buttons
released.
3
4
5
6
7
A
and/or
B
SPEAKERS
a
xlOnhoff
BAND
FM/AM
Select
the
band.
AUTO
TUNING
“AUTO”
appears
on
the
display
window.
For
lower
For
higher
frequencies
frequencies
_
TUNIN
G
!
s
Select
the
station.
I
7
8
important
•
The
“MEMORY”
indication
will
go
off
after
a
few
seconds.
If
the
“MEMORY”
indication
has
gone
off,
press
MEMORY
again.
•
Storing
a
new
station
on
a
preset
station
number
erases
the
previously
memorized
station.
To
select
a
station
number
of
two
digits
Press
the
first
digit
followed
by
the
second
one.
For
example:
To
memorize
a
station
to
“10”,
press
“1”
then
“
0
”.
3
MEMORY
SCAN
G
stop
scanning.
Which
stations
are
skipped
during
memory
scanning?
The
memory
scanning
function
skips
numbers
which
are
not
preset,
and
also
skips
stations
with
a
weak
signal
strength.
Tape
Playback
(on
either
deck
A
or
B)
UNCTION
VIDEO
CD
TUNER
PHONO
ii
■
Tape
Recording
(deck
B)
To
stop
recording
Press
■
To
start
recording
more
precisely
1
Press
II.
2
Press
#.
3
Adjust
recording
level.
4
Press
II
again
at
the
desired
point.
Dolby
setting
The
DOLBY
NR
switch
operates
on
both
decks
A
and
B.
DOLBY
NR
switch
Cassette
recorded
with
Dolby
NR
ON
(=.)
Non-Dolby
cassette
OFF(n)
Tape
type
selection
When
playing
back
select
the
tape
type
with
the
TAPE
(DECK-A,
DECK-B)
selectors
referring
to
the
tape
list
below.
Tape
Type
Tapes
(C-46
-
C-90)
Type
I
SONY:
HF,
HF-S,
HF-ES
(NORMAL)
Other
TYPE
I
equivalent
tapes
(For
120
US
and
NORMAL
BIAS)
TYPE
II
SONY:
UX,
UX-S,
UX-ES,
UX-PRO
(CrO?)
Other
TYPE
II
equivalent
tapes
(for
70MS
and
HIGH
BIAS)
TYPE
IV
SONY:
METAL-ES
(METAL)
Other
TYPE
IV
equivalent
tapes
(For
70
mS
and
METAL
BIAS)
10
Recording
Level
Adjustment
_
Adjust
the
recording
level
according
to
the
tape
type
by
observing
the
PEAK
LEVEL
METERs.
Recommended
maximum
peak
level
meter
reading
I
TY
PE
rv
(metal)
tape
I
TYPE
I
(normal),
TYPE
II
(Cr02)
tapes
PE^iK
LEVEL
METER
m
—
■
If
the
recording
level
setting
is
too
high,
the
recording
will
be
distorted,
and
if
it
is
too
low,
the
tape
will
produce
a
hissing
sound.
To
prevent
accidental
erasure
To
reuse
a
cassette
To
protect
side
A
recording
Side
A
~
A
Break
^
^1
out.
hr
-
Tab
of
side
B
7
^
o
Tab
of
side
A
LEFT
RIGHT
11
(The
dust
cover
is
not
supplied
the
U.SA
2
-
3,6
-REJECT
—4
“5
When
the
record
has
finished
playing
When
the
tonearm
reaches
the
end
of
the
record,
it
will
automatically
return
to
the
arm
rest.
To
lift
up
the
stylus
during
play
Set
the
cueing
lever
to
▼
.
To
stop
during
play
Press
REJECT.
model.)
•
If
the
tonearm
does
not
return
to
the
arm
rest,
during
initial
Operation,
press
the
REJECT
button.
After
this
the
tonearm
automatically
returns
to
the
arm
rest.
•
If
you
move
the
tonearm
close
to
the
center
while
the
turntable
is
rorating,
the
tonearm
may
return
to
the
arm
rest.
Do
not
resist
this
movement,
as
this
may
damage
the
automatic
return
mechanism.
13
Cleaning
the
Heads
and
Tape
Path
(both
decks)
_
•
-
Clean
after
every
10
hours
of
operation
and
before
recording
foroptirnum
record/playback
quality.
1
Press
■
A
of
the
both
decks
A
and
B.
2
Slightly
moisten
the
tip
of
a
cotton
swab
with
cleaning
fluid
or
alcohol.
3
Wipe
heads,
pinch
roller
and
capstan.
Capstan
Cleaning
the
Cabinet
__
Replace
the
stylus
after
approximately
400
hours
of
use.
An
ND-155G
replacement
stylus
is
available
at
your
Sony
dealer.
Handle
this
delicate
stylus
with
case.
1
Turn
off
POWER
of
the
amplifier.
2
Secure
the
tonearm
to
the
arm
rest.
3
Detach
the
stylus
assembly
by
grasping
it
with
your
fingers.
4
Insert
the
new
stylus.
Cotton
swab
Pinch
roller
Pull
out
Playback
head
(A)
Record/playback
head
(B)
Do
not
insert
cassette
until
cleaned
areas
are
completely
dry.
Demagnetizing
the
Heads
(both
decks)
After
20
to
30
hours
of
use,
it
is
necessary
to
remove
residual
magnetism
built
up
on
the
head.
Turn
off
the
power
and
demagnetize
heads
with
any
commercially
available
demagnetizer.
the
Stylus
Clean
the
cabinet,
panel
and
controls
with
a
soft
cloth
lightly
moistened
with
a
mild
detergent
solution.
Do
not
use
any
type
of
abrasive
pad,
scouring
powder
or
solvent,
such
as
alcohol
or
benzine.
Specifications
AUDIO
POWER
SPECIFICATIONS
POWER
OUTPUT
AND
TOTAL
HARMONIC
DISTORTION:
With
8
ohm
loads,
both
channels
driven,
from
20—20,000
Hz;
rated
100
watts
per
channel
minimum
RMS
power,
with
no
more
than
0.08%
total
harmonic
distortion
from
250
milliwatts
to
rated
output.
Other
Specifications
TA-AX285
Inputs
Sensitivity
Impedance
PHONO
2.0
mV
50
kilohms
TUNER/CD/
VIDEO/TAPE
150
mV
50
kilohms
Outputs
REG
OUT:
Votage
150
mV,
Impedance
1
kohms
SPEAKER:
Accepts
speaker
of
8
to
16
ohms
HEADPHONES:
Accepts
headphones
with
low
and
high
impedance
Frequency
response
PHONO:
RIAA
curve
±0.5
dB
TUNER/CD/VIDEOH'APE:
7
Hz
-
70
kHz
±3
dB
GRAPHIC
EQUALIZER
controls
BoosUcut
range:
±8
dB
(100
Hz,
400
Hz,
1
kHz,
4
kHz)
±6
dB
(12
kHz)
Dimensions
Weight
Approx.
430
x
130
x
355
mm
(17x5*/ix
14
inches)
Approx.
8.2
kg
(18
lb
2
oz)
net
ST>JX285
System
FM
stereo,
FM/AM
superheterodyne
tuner
Quartz-locked
digital
synthesizer
system
FM
tuner
section
Tuning
range
87.5-108
MHz
Antenna
terminals
75
ohms
unbalanced
300
ohms
balanced
Intermediate
frequency
10.7
MHz
Sensitivity
at
50
dB
quieting
22.1
dBf,
7
)iV
(mono)
42.1
dBf,
70
(stereo)
Usable
sensitivity
19.5
dBf,
5
(IHF)
Signal-to-noise
ratio
(at
75
kHz
deviation)
80
dB
(mono)
75
dB
(stereo)
Harmonic
distortion
0.3%
(mono)
0.5%
(stereo)
at
1
kHz
Separation
40
dB
at
1
kHz
Selectivity
'
55
dB
at
400
kHz
AM
tuner
section
Tuning
range
530-1,610
kHz
Antenna
AM
loop
antenna.
External
antenna
terminal
Intermediate
frequency
450
kHz
Usable
sensitivity
AM
loop
antenna:
500fiV/m
(1,000
kHz)
Signal-to-noise
ratio
54
dB
(50
mV/m)
Harmonic
distortion
0.3%
(50
mV/m,
400
Hz)
Selectivity
38
dB
(10
kHz)
Dimensions
Approx.
430
x
80
x
250
mm
(w/h/d)
(17x3V<x9r/,
Inches)
incl.
projecting
parts
and
controls
Weight
Approx.
1.9
kg
(4
lb
4
oz)
net
TC-W285
Recording
system
4-track
2-channel
stereo
Frequency
response
DOLBY
NR
OFF
With
TYPE
rv
cassette
(Sony
METAL-ES)
30-15,000
Hz
(±3dB)
With
TYPE
II
cassette
(Sony
UCX-S)
30-14,000
Hz
(±3dB)
With
TYPE
I
cassette
(Sony
HF-S)
30
-
13,000
Hz
(±3
dB)
Wow
and
flutter
0.12%
WRMS
(NAB)
Dimensions
Approx.
430
x
130
x
250
mm
(w/h/d)
(17x51/8x9'/,
inches)
incl.
projecting
parts
and
controls
Weight
Approx.
2.85
kg
(6
lb
6
oz)
net
PS-LX285
Turntable
Platter
30
cm
(12
in.)
Motor
DC
servo
motor
Drive
system
Belt-drive
Speed
33‘/i
rpm,
45
rpm
Automatic
system
Return,
reject
Tonearm
type
Statically
balanced
Cartridge
Type
Moving
magnet
type
Stylus
Sony
ND-155G
(0.6
mil
diamond)
Dimensions
U.S.A.
model:
Weight
Approx.
430
X
95
X
350
mm
(w/h/d)
(17
x3>/4x
13'/,
inches)
Canadian
model:
Approx.
430
X
105
X
350
mm
(w/h/d)
(17
X
4V,
X
1
3
'/,
inches)
U.S.A.
model:
General
Approx.
2.5
kg
(5
lb
9
oz)
net
Canadian
model:
Approx.
3.3
kg
(7
lb
5
oz)
net
Power
rfequirements
120
V
ac,
60
Hz
Power
consumption
U.S.A.
model
175
W
Canadian
model
385
VA
AC
outlet
1
switched,
100
W
max.
Accessories
supplied
Flat
cord
with
7-pin
connectors
(1)
Flat
cord
with
11-pin
connectos
(1)
AM
loop
antenna
(1)
FM
ribbon
antenna
(1)
45-rpm
adaptor
(1)
Dust
cover
(1)
(Canadian
model
only)
RM-S380
Remote
commander
(1)
Sony
SUM-3
(NS)
batteries
(2)
Design
and
specifications
subject
to
change
without
notice.
15
Tmbleshooting
Guide
The
following
checks
will
assist
in
the
correction
of
most
problems
which
you
may
encounter
with
you
set.
Should
any
problem
persist
after
you
have
made
these
checks,
consult
your
nearest
Sony
service
facility.
Before
going
through
the
check
list
below,
first
pay
attention
to
the
following
fundamental
points.
•
The
power
cord
must
be
firmly
connected.
•
The
speaker
connection
must
be
firmly
made.
•
The
flat
cord
and
other
connecting
cords
must
be
firmly
connected.
Radio
Program
Reception
The
STEREO
indicator
flickers.
•
Adjust
the
antenna.
Severe
hum
or
noise
•
The
signal
strength
is
too
weak.
Connect
the
external
antenna.
•
Adjust
the
antenna.
•
Connect
the
ground
wire.
Cassette
Deck
Operation
The
•
button
does
not
activate.
•
No
cassette
in
the
cassette
holder.
•
The
tab
is
removed
from
the
cassette.
The
•
button
or
^
button
cannot
be
activated.
•
The
tape
is
wound
completely.
Tape
does
not
run
even
when
the
►
button
is
depressed.
•
The
II
button
is
depressed.
•
The
cassette
holder
is
not
properly
closed.
Noises
increase
while
recording
and
playback.
There
is
a
decrease
in
sound
level.
•
Dirty
heads.
•
Magnetic
built-up
on
the
heads.
Excessive
wow
or
flutter,
or
sound
drop-out.
•
Contamination
of
the
capstan
or
pinch
roller.
Insufficient
erasure
•
Dirty
erase
head.
Unbalanced
tone
in
higher
frequencies
•
The
DOLBY
NR
switch
is
set
incorrectly.
During
playback,
set
the
switch
to
the
same
position
as
that
used
when
the
tape
was
recorded.
•
Set
the
TAPE
type
selectors
to
the
appropriate
position.
Turntable
Operation
Impaired
tone
quality
•
Dusty
stylus.
•
Worn
stylus.
No
audio
from
one
channel
•
Loose
connection
of
phono
cord.
Groove
skipping/tonearm
skating/tonearm
•Turntable
is
not
level.
not
advancing
•
Defective
record.
Loud
rumble
or
low-frequency
howl
•The
turntable
is
subjected
to
external
vibration.
•
The
turntable
is
placed
too
near
the
speaker.
General
No
audio
•
Turn
the
VOLUME
control
clockwise.
•
Check
the
SPEAKERS
select
buttons
setting.
•
Check
the
MUTING
switch
setting.
No
audio
from
one
channel
or
unbalanced
left
and.right
volume
•
Adjust
the
BALANCE
control.
•
Check
the
speaker
connections
of
the
inoperative
channel.
Reversed
left
and
right
sound
•
Check
the
speaker
cord
connection
and
speaker
location.
Lack
of
bass
sound
or
apparently
imprecise
physical
location
or
musical
instruments
•
Check
the
©
©
speaker
cord
connection
for
proper
phasing.
Sony
Corporation
Printed
in
Japan
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