CD-BA3100 (serv.man2). Split - Section 1 - Text - 1-17 - Sharp Audio Service Manual (repair manual). Page 8

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Many potential "problems" can be resolved by the owner without calling a service
technician.
If something is wrong with this product, check the following before calling your autho-
rised SHARP dealer or service centre.

 

The clock is not on time.

Did a power failure occur? Reset the 
clock.

When a button is pressed, the unit
does not respond. 

Set this unit to the power stand-by mode 
and then turn it back on.

If the unit still malfunctions, reset it.

No sound is heard.

Is the volume level set to "0"?

Are the headphones connected?

Are the speaker wires disconnected?

Playback does not start.

Is the disc loaded upside down?

Playback stops in the middle or is
not performed properly. 

Does the disc satisfy the standards?

Is the disc distorted or scratched?

Playback sounds are skipped, or
stopped in the middle of a track. 

Is the unit located near excessive vibra-
tions?

Is the disc very dirty?

Has condensation formed inside the unit?

Radio makes unusual noise con-
secutively.

Is the unit placed near the TV or comput-
er?

Is the FM aerial or AM loop aerial placed 
properly? Move the AC power lead away 
from the aerial if located near.

Cannot record.

Is the erase-prevention tab removed?

Cannot record tracks with proper
sound quality. 

Is it a normal tape? (You cannot record on 
a metal or CrO  tape.)

Cannot erase completely.

Sound skipping.

Is there any slack?

Is the tape stretched?

Cannot hear treble.

Are the capstans, pinch rollers, or heads 
dirty?

Sound fluctuation.

Cannot remove the tape.

If a power failure occurs during playback, 
the heads remain engaged with the tape. 
Do not open the compartment forcibly. 
Wait until electricity resumes.

The remote control does not oper-
ate.

Is the AC power lead 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?

When this product is subjected to strong external interference (mechanical shock,
excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is
operated 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 the previous operation, unplug and plug in the unit,
and then turn the power on.

If neither operation above restores the unit, clear all the memory by resetting it.
 

1

Press the ON/STAND-BY button to enter the power stand-by mode.

2

Whilst pressing down the MEMORY/SET button and the X-BASS/DEMO button,
press the ON/STAND-BY button until "CLEAR AL" appears.

This operation will erase all data stored in memory including clock, timer settings,
tuner preset, and CD programme.

On the back of this unit is equipped with a transport screw in order to prevent damage
during transportation.
1

Remove all discs from the unit, close the 
disc tray.
"NO DISC" is displayed.

Press the ON/STAND-BY button to enter the 
stand-by mode.
"GOOD-BYE" is displayed.

Replace the batteries if the operating distance is reduced or if the operation
becomes erratic. Purchase 2 "AA" size batteries (UM/SUM-3, R6, HP-7 or similar).
Periodically clean the transmitter on the remote control and the sensor on the unit
with a soft cloth.
Exposing the sensor on the unit to strong light may interfere with operation.
Change the lighting or the direction of the unit.
Keep the remote control away from moisture, heat, shock, and vibrations.

Check the remote control after checking all connections have been made correctly.
Face the remote control directly to the remote sensor on the unit.

Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the
music.