Panasonic CQ-C5301U Safety Guide - Page 17

E N G Troubleshooting L I S H If You Suspect Something Wrong 33 Check and take steps as described below. 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. 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 No power to the unit Sound is not generated. The demonstration screen displayed and no operable Noise Noise is made in step with engine revolutions. Some operations are not executable. Possible cause a Possible solution 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. 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. (Installation Instructions) You cannot operate the unit while the demonstration screen appears. aPress [DISP] to end the demonstration screen. If the demonstration screen appears frequently, there is a possibility that 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.) aCheck the battery 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 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. 34 CQ-C5401U/C5301U E N G L I ■ Common (continued) S H Problem Possible cause a Possible solution 314 No sound from speaker(s) 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 channels are reversed between right and left. The speaker wiring is reversed between right and left. aPerform the speaker wiring in accordance with the wiring diagram. The sound field is not clear in the stereo mode. Central sound is not settled. The plus and minus terminals at right and left channels of speakers are connected reversely. aPerform the speaker wiring in accordance with the wiring diagram. The power of the unit fails unintentionally. The safety device works. aConsult your dealer, or your nearest Panasonic Servicenter. ■ Radio Problem Poor reception or noise The number of auto preset stations is less than 6. Preset stations cannot be stored. Possible cause a Possible solution Antenna installation or wiring of antenna cable is faulty. aCheck 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. No power is supplied to the antenna amplifier (when using a film antenna, etc.). aCheck the wiring of the antenna battery lead. The number of receivable stations is less than 6. aMove to an area where receivable stations number is maximum, and try presetting. The contact of the battery lead is poor, or the battery lead is not always powered. aMake sure that the battery lead is connected securely, and preset sta- tions again. ■ XM Satellite Radio Option Problem Possible cause a Possible solution Channel unselectable No contract with XM Satellite Radio Inc. aRefer to page 16 of this book and the XM's website to sign up for XM Radio service. 35 CQ-C5401U/C5301U