Panasonic CQ-VD7500U, CQ-VD7700U Troubleshooting, Common, Display Settings, Remote Control

Models: CQ-VD7700U CQ-VD7500U

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Troubleshooting

 

 

 

 

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Preliminary Steps

 

 

 

 

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Common (continued)

 

 

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Cautions:

 

 

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Check and take steps as described in the tables below.

¡Do not use the unit in an irregular condition,

Problem

Possible cause a Possible solution

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If You Suspect Something is Wrong

for example, without sound, or with smoke or

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foul smell, which can cause a fire or electric

The sound field is not

The plus and minus terminals at right and left channels of speakers are con-

 

 

Immediately switch power off.

shock. Immediately stop using the unit and

 

 

 

clear in the stereo

nected reversely.

 

 

call the store where you purchased it.

 

 

Disconnect the power cable and check that there is neither smoke

mode. Central sound is

aPerform the speaker wiring in accordance with the wiring diagram.

 

 

¡Never try to repair the unit by yourself due to

 

 

nor heat from the unit before asking for repairs. Never try to repair

not settled.

 

 

 

 

 

risk of electrical injury and potential damage

 

 

 

 

 

the unit yourself because it is dangerous to do so.

 

 

 

 

 

 

to electrical safety equipment.

 

 

 

 

 

 

 

 

 

 

 

Common

Problem

No power to the unit

Sound is not generated

Noise

Noise is made in step with engine revolu- tions.

Some operations are not executable.

No sound from speak- er(s)

Possible cause a Possible solution

The power cord (battery, ACC and ground) is connected in the wrong way.

aCheck the wiring.

Fuse blowout

aEliminate the cause of fuse blowout and replace the fuse with new one. Consult your dealer.

MUTE is set to ON.

aSet MUTE to OFF.

The wiring of the speaker lines is not correct, or a break or poor contact exists.

aCheck the wiring in accordance with the wiring diagram.

There is an electromagnetic-wave generator such as a cellular phone near the unit or its electrical lines.

aKeep an electromagnetic-wave generator such as a cellular phone away from the unit and the wiring of the unit. In case that noise cannot be elim- inated due to the wiring harness of the car, consult your dealer.

The contact of the ground lead is poor.

aMake sure that the ground lead is securely connected to an unpainted part of the chassis.

Alternator noise comes from the car.

aChange the wiring position of the ground lead. aMount a noise filter on the power supply.

Some operations are not executable in particular modes such as menu mode.

aRead the operating instructions carefully and change the mode. In case the unit is still out of order, consult your dealer.

Some sound setting (Example: BAL/FAD, P·MODE, SP SETUP or Dolby Prologic II) is not appropriate.

aReadjust the sound setting (BAL/FAD, P·MODE, SP SETUP or Dolby Prologic II, etc.)

There is a break, a short circuit, poor contact or wrong wiring regarding the speaker wiring.

aCheck the speaker wiring.

Display Settings

Problem

The brightness of the screen is not stable.

The picture is dark. The pic- ture is whitish. Something is wrong with the picture.

The picture is light in color.

The display does not go back into the unit.

Red, blue, or green spots appears.

Remote Control

Problem

Pressing buttons does not perform opera- tions.

Possible cause a Possible solution

“AUTO” dimmer is selected.

aSelect one of the dimmer levels from among 1 to 4 to make the dimmer adjustment become indpendent of light intensity.

The screen is not adjusted properly.

aMake every adjustment of the screen.

The monitor stops on the way to the home position.

aPress [ ] (OPEN/CLOSE).

This is a characteristic of liquid crystal panels and is not a problem.

Possible cause a Possible solution

Battery poles (+) (–) are reversed.

aInsert the battery correctly.

Wrong battery.

aCheck the battery.

Battery has run down.

aReplace the battery.

Remote control is facing in the wrong direction.

aDirect the remote control at remote control sensor on the display unit.

The speaker channels are reversed between right and left.

The speaker wiring is confused between right and left.

aPerform the speaker wiring in accordance with the wiring diagram.

TV

Problem

Unclear image due to noise

Possible cause a Possible solution

The intensity of the radio wave is too low. aChange the broadcast station.

Connection or installation of the TV antenna has not been performed correctly. aCheck the connection or installation.

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CQ-VD7700U/VD7500U

CQ-VD7700U/VD7500U

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Panasonic CQ-VD7500U, CQ-VD7700U operating instructions Troubleshooting, Common, Display Settings, Remote Control