Sony LBT-D270 - Manual (Page 21)

CD Player
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 program or shuffle
mode. Press CONTINUE.
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 is reversed.
Check the speaker connection and
speaker placement.
Bass is lacking or the location of the
musical instruments is apparently
imprecise.
Check the speaker connections for
proper phasing.
There is severe hum or noise.
-> The TV or VCR is too close to the
stereo system. Move the stereo
svstem away from the TV or VCR.
"12:00 AM" 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.
Maintenance
To clean the tape heads and tape
path
Contaminated tape heads cause poor
recording or sounci 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 swab
Deck B
Cleaning swab
Insert a_tape after the areas cleaned are
completely drw
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 doth slightly moistened with a
mild detergent solution.
To clean the CD
When a CD is dirtv, clean it with a cleaning
cloth. Wipe the CD from the center out.
Notes on CDs
• Do not use solvents such as benzene,
thinner, commercially available cleaners,
or anti-static spray intended for vinyl LPs.
• If there is a scratch, dirt or fingerprints on
the CD, it mav cause a tracking error.
Specifications
AUDIO POWER
SPECIFICATIONS
POWER OUTPUT AND
TOTAL HARMONIC DIS­
TORTION:
LBT-D170/LBT-G1100:
With 6 ohm loads, both
channels driven, from 70 -
20.000 Hz; rated 20 watts per
channel minimum RMS
power, with no more than
10% total harmonic
distortion from 250
milliwatts to rated output.
LBT-D270/LBT-G3100 for
the U.S.A.:
With 8 ohm loads, both
channels driven, from 70 -
20.000 Hz; rated 100 watts
per channel minimum RMS
power, with no more than
0,9% total harmonic
distortion from 250
milliwatts to rated output.
CD player section
System Compact disc and
digital audio system
Laser Senaiconductor laser
(X = 780 nm) Emission
duration; continuous
Laser output Max 44.6 pW*
* This output is the value measured at a
distance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture.
Wavelength 780 - 790 nm
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 - 108.0 .VlLIz
(100 kHz step)
Antenna FM wire antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range 530- 1,710 kHz
(with the AM tuning
interval set at 10 kHz)
531 - 1,710 kHz
(with the AM tuning
interc'al set at 9 kHz)
Antenna AM loop antenna
External antenna
terminals
Intermediate frequency
450 kHz
For Your Information 21