Panasonic C7301U, CQ-C8401U, C8301U, C7401U operating instructions Troubleshooting, Radio, XM Tuner

Troubleshooting

	Problem	Possible cause a Possible solution
	Some operations	Some operations are not executable in particular modes such as menu mode.
		a Read the operating instructions carefully and cancel the mode. In case the
	are not executable.
		unit is still out of order, consult the dealer.
		BALANCE/FADER setting is not appropriate.
	No sound from	a Readjust BALANCE/FADER.
		There is a break, a short circuit, poor contact or wrong wiring regarding the speaker
	speaker(s)
		wiring.
(continued)		a Check the speaker wiring.
	right and left.
	The speaker
	channels are	The speaker wiring is confused between right and left.
	reversed between	a Perform the speaker wiring in accordance with the wiring diagram.
Common
	The sound field is
	not clear in the	The plus and minus terminals at right and left channels of speakers are connected
	stereo mode.	reversely.
	Central sound does	a Perform the speaker wiring in accordance with the wiring diagram.
	not settled.
	The power fails	The safety device works.
		a Call the store where you purchased the unit, or your nearest Panasonic
	unintentionally.
		Servicenter.
		Antenna installation or wiring of antenna cable is faulty.
		a Check whether the antenna mounting position and its wiring are correct. In
	Poor reception or	addition, check to see whether the antenna ground is securely connected to
	noise	the chassis.
		No power is supplied to the antenna amplifier (when using a film antenna, etc.).
		a Check the wiring of the antenna battery lead.
Radio
	The number of auto	The number of receivable stations is less than 6.
	preset stations is	a Move to an area where receivable stations number is maximum, and try pre-
	less than 6.	setting.
	Preset stations	The contact of the battery lead is poor, or the battery lead is not always powered.
		a Make sure that the battery lead is connected securely, and preset stations
	cannot be stored.
		again.

XM Tuner

CD

MP3/WMA

Problem Possible cause a Possible solution

Channel	No contract with XM Satellite Radio Inc.	English
	a Refer to page 13 of this book and the XM's website to sign up for XM Radio
unselectable
	service.
	The disc is inserted upside down.
No playback or	a Insert a disc correctly.
disc ejected	There is a flaw or foreign material on the disc.
	a Remove the foreign material, or use a flawless disc.
Sound skipping or	There is a flaw or foreign material on the disc.
noise	a Remove the foreign material, or use a flawless disc.
	The unit is not sufficiently secured.
Sound skipping	a Secure the unit to the console box with the rear support strap, etc.
due to vibration	The unit is tilted at over 30˚ in the front-to-end direction.
	a Make the angle 30˚ or less.
	Something such as a peeled label obstructs the disc coming out.
	a Hold down the [OPEN] button for 2 sec. or more when the face plate is open
	(disc forced ejection). In case that the disc forced ejection does not work,
Disc unejectable	consult the dealer	Troubleshooting
	The disc has unplayable formatted data.
	The microcontroller in the unit operates abnormally due to noise or other factors.
	a Unplug the power cord and plug it again. In case the unit is still out of order,
	consult the dealer.
No playback or	a Refer to the description about MP3/WMA for playable sound data except CD-
disc ejected
	DA (i.e. music CD).
The CD-R/RWs that	The playability of some CD-R/RWs may depend on the combination of media,
are playable on	recording software and recorder to be used even if these CD-R/RWs are playable on
other devices are	other devices such as a PC.
not playable on	a Make CD-R/RWs in different combination of media, recording software and
this unit.	recorder after referring to the description about MP3/WMA.
	There is a flaw or foreign material on the disc.
Sound skipping or	a Remove the foreign material, or use a flawless disc. For MP3/WMA, refer to
	the description about MP3/WMA.
noise
	Playing VBR (Variable Bit Rate) files may cause sound skipping.
	a Play Non-VBR files.

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