A mobile phone is used near the unit.aKeep the mobile phone away from the unit.Condensation (dew)aWait for a while before use.Cables are not correctly connected.aConnect cables correctly.Mute is set to ON.aSet it to OFF.Fuse is burnt.aCall the store where you purchased the unit, or your nearest PanasonicService Center and ask for fuse replacement.Grounding wire is not correctly connected.aConnect the grounding wire to a metal part of the car.Accessory cable is not correctly connected.aConnect the accessory cable to your car's ACC source.Battery cable is not correctly connected.aConnect the battery cable to the terminal that is always live.Cables are not correctly connected.aConnect cables correctly.Car’s engine switch is not on.aTurn your car’s ignition switch to ACC or ON.39CQ-VX2200W1ENGLISH30Preliminary StepsCheck and take steps as described in the tables below.If You Suspect Something WrongImmediately switch power off.Disconnect the power connector and check that there is neithersmoke nor heat from the unit before asking for repairs. Never try torepair the unit yourself because it is dangerous to do so.Cautions:¡Do not use the unit if it malfunctions orsomething is wrong.¡Do not use the unit in abnormal conditions,for example, without sound, or if it emitssmoke or a foul smell, which can causeignition or electric shock. Immediately stopusing the unit and call the store where youpurchased it.TroubleshootingTrouble Cause / StepNo powerNo soundNoise■ Common