PANASONIC CQC3100U
Owner's Manual

E N G L I S H 19

Troubleshooting
Preliminary Steps
Check and take steps as described in the tables below. Caution: � Do not use the unit if it malfunctions or if there is something wrong. � Do not use the unit in abnormal condition, for example, without sound, or with smoke or foul smell, which can cause ignition or electric shock. Immediately stop using it and call the store where you purchased it. Problem Noise Possible cause There is an electromagnetic-wave generator such as a cellular phone near the unit or its electrical lines. Possible solution Keep an electromagnetic-wave generator such as a cellular phone away from the unit and the wiring of the unit. In case the noise cannot be eliminated due to the wiring harness of the car, consult your dealer. Make sure that the ground lead is connected to an unpainted part of the chassis securely. Change the wiring position of the ground lead. Mount a noise �lter on the power supply. No sound from speaker(s) Eliminate the cause of fuse blow out and replace the fuse with new one. Consult your dealer. Set MUTE to OFF. Check the wiring in accordance with the wiring diagram. The speaker channels are reversed between right and left. Balance/fader setting is not appropriate. There is a break, a short circuit, poor contact or wrong wiring regarding the speaker wiring. Some speakers are out of order. The speaker wiring is confused between right and left. Readjust balance/fader. Check the speaker wiring.

E N G L I S H 20

If You Suspect Something Wrong
Immediately switch the power off. Disconnect the power connector and check that there is neither smoke nor heat from the unit before asking for repairs. Never try to repair the unit by yourself because it is dangerous to do so.

The contact of the ground lead is poor.

Troubleshooting Tips
q Common
Problem No power to the unit Possible cause The power cord (battery, ACC and ground) is connected in the wrong way. Fuse blow out Possible solution Check the wiring. Noise is made in step with engine revolutions. Alternator noise comes from the car.

Sound is not generated.

MUTE is set to ON. The wiring of the speaker lines are not correct, or a break or poor contact arises. You cannot operate the unit while the demonstration screen appears.

Replace the speaker with new one. Perform the speaker wiring in accordance with the wiring diagram.

The demonstration screen displayed and no operable.

Press [DISP] (display) to end the demonstration screen.

q Radio
Poor reception or noise Antenna installation or wiring of antenna cable is faulty. Check whether the antenna mounting position and its wiring are correct. In addition, check to see whether the antenna ground is securely connected to the chassis.

If the demonstration screen appears Check the battery wiring in accordance frequently, there is a possibility that with the wiring diagram. poor contact or wrong wiring arises between the battery lead of the unit and the battery cable of the car. (The battery lead should be always powered.) Some operations are not executable Read the operating instructions in particular modes such as menu mode. carefully and cancel the mode. In case the unit is still out of order, consult the dealer.

Some operations are not executable.

No power is supplied to the antenna Check the wiring of the antenna battery ampli�er (when using a �lm lead. antenna, etc.). The number of auto preset stations are less than 6. Preset stations cannot be stored. The number of receivable stations are less than 6. Move to an area where receivable stations number is maximum, and try presetting. Make sure that the battery lead is connected securely, and preset stations again.

The contact of the battery lead is poor, or the battery lead is not always powered.

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CQ-C3400/3300/3200/3100U

CQ-C3400/3300/3200/3100U

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