Remote Control; Troubleshooting Chart - Sharp CD-BA3100 Service Manual

CD-BA3100

Troubleshooting Chart

Many potential "problems" can be resolved by the owner without calling a service tech-
nician. If something is wrong with this product, check the following before calling your
authorized SHARP dealer or service center.
General
Symptom
The clock is not on time.
When a button is pressed, the unit
does not respond.
No sound is heard.
CD player
Symptom
Playback does not start.
Playback stops in the middle or is
not performed properly.
Playback sounds are skipped, or
stopped in the middle of a track.
Tuner
Symptom
Radio makes unusual noise con-
secutively.
Troubleshooting Chart
If trouble occurs
When this product is subjected to strong external interference (mechanical shock, ex-
cessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is oper-
ated incorrectly, it may malfunction.
If such a problem occurs, do the following:
1
. Set the unit to the stand-by mode and turn the power on again.
2
. If the unit is not restored in step 1, unplug and plug in the unit, and then turn
the power on.
3
. If neither step 1 nor 2 restores the unit, do the following:
Press the ON/STAND-BY button to enter the power stand-by mode.
While pressing down the MEMORY/SET button and X-BASS/DEMO button,
press the ON/STAND-BY button until "CLEAR AL" appears.
Caution:
This operation will erase all data stored in memory including clock, timer settings,
tuner preset, and CD program.
Possible cause
Did a power failure occur?
Reset the clock.
Set this unit to the power stand-by mode
and then turn it back on.
If the unit still malfunctions, reset it.
(Refer to step 3 under "If trouble occurs".)
Is the volume level set to "0"?
Are the headphones connected?
Are the speaker wires disconnected?
Possible cause
Is the disc loaded upside-down?
Does the disc satisfy the standards?
Is the disc distorted or scratched?
Is the unit located near excessive vibra-
tions?
Is the disc very dirty?
Has condensation formed inside the
unit?
Possible cause
Is the unit placed near the TV or com-
puter?
Is the FM/AM loop antenna placed prop-
erly?
Move the AC power cord away from the
antenna if located near.
Cassette deck
Symptom
Cannot record.
Cannot record tracks with proper
sound quality.
Cannot erase completely.
Sound skipping.
Cannot hear treble.
Sound fluctuation.
Cannot remove the tape.

Remote control

Symptom
The remote control does not op-
erate.
Condensation
Sudden temperature changes, storage or operation
in an extremely humid environment may cause con-
densation inside the cabinet (CD pickup, tape heads,
etc.) or on the transmitter on the remote control.
Condensation can cause the unit to malfunction.
If this happens, leave the power on with no disc (or
cassette) in the unit until normal playback is possible
(about 1 hour). Wipe off any condensation on the trans-
mitter with a soft cloth before operating the unit.
Remote Control
Test of the remote control
Face the remote control directly to the remote sensor on the unit.
The remote control can be used within the range shown below:
Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the
music.
– 6 –
Possible cause
Is the erase-protection tab removed?
Is it a normal tape?
(You cannot record on a metal or CrO
tape.)
Is there any slack?
Is the tape stretched?
Are the capstans, pinch rollers, or heads
dirty?
If a power failure occurs during playback,
the heads remain engaged with the tape.
Do not open the compartment forcibly.
Wait until electricity resumes.
Possible cause
Is the AC power cord of the unit plugged
in?
Is the battery polarity respected?
Are the batteries dead?
Is the distance or angle incorrect?
Does the remote control sensor receive
strong light?
Remote sensor
8" - 20'
(0.2 m - 6 m)
2