58 CQ-C9800/9700U CQ-C9800/9700U 59Troubleshooting (continued)ENGLISH39ENGLISH40CD/MP3/WMA Remote Control UnitProblem Possible cause Possible solutionNo playback or discejectedThe disc is inserted upside down. Insert a disc correctly.There is a flaw or foreign objectson the disc.Remove the foreign objects, or use afl awless disc.The disc has unplayable formatteddata.Refer to the description aboutMP3/WMA for playable sound dataexcept CD-DA (i.e. music CD).The unit plays back the ROM trackof a mix mode CD.Skip the ROM track.The CD-R/RWs thatare playable onother devices are notplayable on this unit.The playability of some CD-R/RWsmay depend on the combinationof media, recording softwareand recorder to be used even ifthese CD-R/RWs are playable onother devices such as a personalcomputer.Make CD-R/RWs in differentcombination of media, recordingsoftware and recorder after referring tothe description about MP3/WMA.Sound skipping ornoiseThere is a flaw or foreign objectson the disc.Remove the foreign objects, or use afl awless disc. For MP3/WMA, refer tothe description about MP3/WMA.Sound skipping due tovibrationThe unit is not sufficiently secured. Secure the unit to the console box withthe rear support strap, etc.The unit is tilted at over 30° in thefront-to-end direction.Make the angle 30° or less.Problem Possible cause Possible solutionNo response topressing buttonsThe battery is inserted in thewrong direction. A wrong battery isinserted.Insert a correct battery in the correctdirection.The lithium battery is weak. Replace the battery with new one.The aiming direction of the remotecontrol unit is wrong.Aim the remote control unit at thesensor of the unit and press buttons.The sensor is exposed to directsunlight. (The remote controlunit may not be operable whenthe sensor is exposed to directsunlight. In such a case, thesystem is not faulty.)Block off sunlight to the sensor.Error Display MessagesCD/MP3/WMA* If all the fi les cannot be played, E4 remains on the display.Disc is dirty, or is upside down. Check the disc.Display Possible cause Possible solutionDisc has scratches. Check the disc.The player cannot read the fi le youare trying to play for some reasons.(File recorded in an unsupportedfi le system, compression scheme,data format, fi le name extension,damaged data, etc.)Select a file that the player can read.Confi rm the type of data recordedon the disc. Create a new disc ifnecessary.MP3/WMA *No disc in the player. Insert a disc into the player.An attempt has been made to playa copy-protected WMA file.Play WMA files which are notcopy-protected.WMANo operation by some cause. If normal operation is not restored,call the store where you purchasedthe unit or the nearest PanasonicServicenter to ask for repairs.Disc unejectable Something such as a peeled labelobstructs the disc coming out.Press and hold [<: eject] (OPEN) formore than 4 seconds when the frontpanel is open (disc forced ejection). Incase that the disc forced ejection doesnot work, consult the dealer.The microcontroller in the unitoperates abnormally due to noiseor other factors.Unplug the power cord and plug itagain. In case the unit is still out oforder, consult the dealer.Note:≥ Refer to the section on “Notes on MP3/WMA” (page 36).