38 CQ-RXBT490W/CR-LXBT490WIf You Suspect Something WrongCheck and take steps as described below.If the described suggestions do not solve the problem,it is recommended to take the unit to your nearestauthorized Panasonic Service Centre. The productshould be serviced only by qualified personnel. Pleaserefer the checking and the repair to professionals.Panasonic shall not be liable for any accidents arisingout of neglect of checking the unit or your own repairafter your checking.Never take measures especially those other thanindicated by italic letters in “Possible Solution”described below because those are too dangerousfor users to handle themselves.Warning¡Do not use the unit in an irregular condition, forexample, without sound, or with smoke or a foulsmell, which can cause ignition or electric shock.Immediately stop using the unit and consult yourdealer.¡Never try to repair the unit by yourself because itis dangerous to do so.Trouble Possible SolutionCommonNo power ¡Start the engine. (Alternatively, turn the ignition switch to theACC position.)¡Verify the wiring. (Battery lead, power lead, ground lead, etc.)¡Fuse blown (Consult your dealer or an authorized PanasonicService Centre.)¡Ask a professional for fuse replacement.¡Be sure to use the same rated fuse.No sound ¡Disable the mute function.¡Verify the wiring.¡Wait until the dew disappears before turning on the unit.Noise ¡Make sure that grounding is established properly.No sound from left, right, front, orrear speaker ¡Adjust the balance and fader.¡Verify the wiring.Left and right sounds are reversed ¡Connect the speaker lead correctly.Disc Player (only for CQ-RXBT490W)No sound, or disc is automaticallyejected. ¡Load the disc correctly.¡Clean the disc.Sound skip, poor sound quality ¡Clean the disc.Sound skip due to vibration ¡The maximum permissible tilt angle is 30°.¡Secure the unit.Disc not ejectable ¡Press [u]. If the disc is still not ejected, consult your dealer oran authorized Panasonic Service Centre.RadioFrequent noise ¡Tune in to another station of high-intensity waves.¡Make sure that the antenna mounted point is grounded properly.Preset data deleted ¡The preset memory is cleared to return to the original factorysetting when the power connector or battery is disconnected.Troubleshooting