TROUBLESHOOTING

What appears to be trouble is not always serious. Check the following points before calling a service center.

Symptoms

Causes

 

 

 

 

Remedies

 

 

 

• CD cannot be played back.

CD is inserted upside down.

Insert the CD correctly.

 

 

 

• CD sound is sometimes

You are driving on rough

Stop CD play while driving

interrupted.

roads.

rough roads.

 

 

 

 

 

CD is scratched.

Change the CD.

 

 

 

 

Connections are incorrect.

Check the cords and

 

 

connections.

 

 

 

 

• “NO DISC” appears on the

No CD is in the loading slot.

Insert a CD into the loading

display.

 

slot.

 

 

 

 

 

CD is inserted incorrectly.

Insert it correctly.

 

 

 

• Sound cannot be heard from

The volume control is turned

Adjust it to the optimum level.

the speakers.

to the minimum level.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connections are incorrect.

Check the cords and

 

 

connections.

 

 

 

 

• SSM (Strong-station

Signals are too weak.

Store stations manually.

Sequential Memory)

 

 

 

 

 

 

 

 

 

 

 

automatic preset does not

 

 

 

 

 

 

 

 

 

 

 

work.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Static noise while listening

The antenna is not connected

Connect the antenna firmly.

to the radio.

firmly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• CD can be neither played

The CD player may function

Press

 

 

 

 

 

 

 

and 0 at the

 

 

 

 

 

back nor ejected.

incorrectly.

same time for more than 2

 

 

seconds. Be careful not to

 

 

drop CD when it is ejected.

 

 

 

 

 

 

 

 

• The unit does not work at

The built-in microcomputer

Press

 

 

 

 

 

 

 

and SEL at

 

 

 

 

all.

may function incorrectly due to

the same time for more than 2

 

noise, etc.

seconds to reset the unit. (The

 

 

clock setting and preset

 

 

stations stored in memory are

 

 

erased.)

 

 

 

 

 

 

 

 

 

 

 

 

 

ENGLISH

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JVC KD-S640 manual Troubleshooting, Symptoms Causes Remedies