Maintenance; Specifications - Sony LBT-N250 Operating Instructions Manual

CD Player
The CD tray does not close.
: > The CD is not placed correctly.
The CD will not play.
> The CD is dirty.
> The CD is inserted label side down.
> Moisture condensation has built
up.
Leave the system turned on for
about an hour until the moisture
evaporates.
Play does not start from the first
track.
> The player is in programme or
shuffle mode. Press CONTINUE.
"a7 is displayed.
> PP >> l (or PPI on the remote)
was repeatedly pressed at the end
of the CD. Press KkK1<4<4 (or Kt
on the remote) to return to the
normal display.
GB | Turntable (for the model
20 supplied with the
turntable only)
Tone arm skips, skates or does not
advance.
> Turntable is not level. Place it on a
level surface.
Poor sound quality
~ The stylus is dirty. Clean or replace
it.
- Rumble or low frequency howl.
> Turntable is placed too close to
speakers. Move speakers away
from the turntable.
The tone arm does not return to its
armrest.
> Press REJECT.
General
There is no sound.
> Rotate VOLUME clockwise.
~> The headphones are connected.
Disconnect them.
Sound comes from one channel or
unbalanced left and right volume.
> Check the speaker connections of
the inoperative channel.
The left and right sound are
reversed.
> Check the speaker connection and
speaker placement.
For Your Information
Bass is lacking or the location of the
musical instruments is apparently
imprecise.
> Check the speaker connection for
proper phasing.
There is severe hum or noise.
> TV or VCR is too close to the stereo
system. Move the stereo system
away from the TV or VCR.
"0:00" flashes in the display.
> A power interruption occurred.
Set the clock and preset radio
stations again.
The remote does not function.
> The batteries have run down.
Replace both batteries. ;
> There is an obstacle between the
remote and the system. Remove the
obstacle.
pee ke ee eee |
Maintenance
To clean the tape heads and tape
path
Contaminated tape heads cause poor
recording or sound drop-out in playback.
We recommend cleaning after every 10
hours of operation.
Open the cassette holder and wipe the
heads, the pinch rollers and the capstans
with a cleaning swab slightly moistened
with cleaning fluid or alcohol. Wipe the
parts shown below:
Deck A
Cleaning
Capstan swab
Playback head
Pinch roller
Deck B
Capstan Cleaning
swab
Record/playback
Erase head
Pinch roller
Insert a tape when the areas cleaned are
completely dry.
To demagnetize the tape heads
After 20 to 30 hours of use, enough residual
magnetism will have built up on the heads
to begin to cause loss of high frequencies
and hiss. At this time, demagnetize the
heads and all metal parts in the tape path
with a commercially available tape head
demagnetizer. Refer to the instructions of
the demagnetizer.
To clean the cabinet
Use a soft cloth slightly moistened with
mild detergent solution.
To clean the CD
When a CD is dirty, clean it with a cleaning
cloth. Wipe the CD from the centre out.
Notes on CD
e Do not use solvents such as benzene,
thinner, commercially available cleaners,
or anti-static spray intended for vinyl LPs.
e If there is a scratch, dirt or fingerprints on
the CD, it may cause a tracking error.
To replace the Stylus (for PS-LX56P
only)
Replace the stylus after every 400 hours of
use. Turn off the power before replacing the
stylus. Handle the stylus with care.
Pee ee er
Specifications
CD player section
System Compact disc digital audio system
Laser Semiconductor laser
Wavelength 780 — 790 nm
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 — 108.0 MHz
Aerial FM wire aerial
Aerial terminals 75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
German and Italian models:
AM: 531 — 1,602 kHz
Other models
MW: 531 -1,602 kHz
LW: 153 - 279 kHz
(with the LW tuning
interval set at 3 kHz)
Aerial AM loop aerial
External aerial
terminals
Intermediate frequency
450 kHz