Sharp CD-DD4500 CDDD4500 Operation Manual - Page 40

40

References

– Troubleshooting Chart

–

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.

■

Tuner

Symptom

●

Radio makes unusual noise con-

secutively.

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.

■

General

Symptom

●

The clock is not on time.

●

When a button is pressed, the unit

does not respond.

●

No sound is heard.

●

The balance between the left and

right channels is bad.

●

Hum or excessive noise.

●

No sound is heard, or the sound

is too low, from the center or sur-

round speakers.

●

The TIMER indicator is flashing.

■

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.

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

●

Did a power failure occur?

Reset the clock. (Refer to page 17.)

●

Set this unit to the power stand-by mode

and then turn it

back on.

●

If the unit still malfunctions, reset it.

(Refer to page 42.)

●

Is the volume level set to “0”?

●

Are the headphones connected?

●

Are the speaker wires disconnected?

●

Are the front and surround speakers

connected to the correct left and right

channels?

●

If an external unit is connected, are the

left and right channels connected prop-

erly?

●

Is the speaker cord plugged in correctly?

●

Does the speaker cord run past other

electronic equipment?

●

Are the plugs or terminals dirty?

●

Is the “SP SIZE” item set to “NO” in the

“SET UP” operation (page 31)?

●

Is the volume too low?

●

Is the speaker wire shorted?

●

Was the unit used at high volume for

many hours?

■

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.

Possible cause

●

Is the erase-protection tab removed?

●

Is it a normal tape?

●

(You cannot record on a metal or CrO

2

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.

Sharp CD-DD4500 CDDD4500 Operation Manual - Page 40

Troubleshooting Chart - system problems

Page 40 highlights