Panasonic CQC3303U CQC3303U User Guide - Page 26

E Troubleshooting N G L I If You Suspect Something Wrong S H Check and take steps as described below. 25 If the described suggestions do not solve the problem, it is recommended to take the unit to your nearest authorized Panasonic Servicenter. The product should be serviced only by qualified personnel. Please refer the checking and the repair to professionals. Panasonic shall not be liable for any accidents arising out of neglect of checking the unit or your own repair after your checking. Never take measures especially those other than indicated by italic letters in "Possible Solution" described below because those are too dangerous for users to handle themselves. Warning ¡Do not use the unit in an irregular condition, for example, without sound, or with smoke or a foul smell, which can cause ignition or electric shock. Immediately stop using the unit and consult your dealer. ¡Never try to repair the unit by yourself because it is dangerous to do so. ■ Common Problem Possible cause a Possible solution No power to the unit The power cord (battery, power and ground) is connected in the wrong way. aCheck the wiring. Fuse blows out. aEliminate the cause of fuse blowout and replace the fuse with new one. Consult your dealer. Sound is not generated. Noise Noise is made in step with engine revolutions. Some operations are not executable. No sound from speaker(s) The speaker channels are reversed between right and left. MUTE is set to ON. aSet MUTE to OFF. The wiring of speaker lines is not correct, or a break or poor contact arises. aCheck the wiring in accordance with the wiring diagram. (a Installation Instructions) There is an electromagnetic-wave generator such as a cellular phone near the unit or its electrical lines. aKeep the electromagnetic-wave generator such as a cellular phone away from the unit and the wiring of the unit. If noise cannot be eliminated 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 connected to an unpainted part of the chassis securely. 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 cancel the mode. If the unit is still out of order, consult your dealer. Balance/fader setting is not appropriate. aReadjust Balance/fader. There is a break, a short circuit, poor contact or wrong wiring regarding the speaker wiring. aCheck the speaker wiring. The speaker wiring is reversed between right and left. aPerform the speaker wiring in accordance with the wiring diagram. 26 CQ-C3433U/C3403U/C3333U/C3303U