Dual Comprehensive Troubleshooting for Your Car Stereo System

	DCBT304U OPERATION
	Troubleshooting
Problem	Cause	Action
	Yellow wire not connected or incorrect	Check connections for proper
Unit will not turn on	voltage Red wire not connected or
		voltage (11~16VDC)
	incorrect voltage
(no power)
	Black wire not connected	Check connection to ground
	Fuse blown	Replace fuse
	Speaker wires not connected	Check connections at speakers
Unit has power	One or more speaker wires touching	Insulate all bare speaker wires
(but no sound)		from each other and chassis
	each other or touching chassis ground	ground
	Yellow or red wire touching chassis	Check for pinched wire
	ground
Unit blows fuses
	Speaker wires touching chassis ground	Check for pinched wire
	Incorrect fuse rating	Use fuse with correct rating
	Unit is not mounted correctly or	Check mounting sleeve and
Excessive skipping	backstrap is not secure	backstrap support
	Physical defect in media (CD, CD-R or	Check media for scratches
	CD-RW)
	Disc read error	Press eject or RESET
ERR FILE appears
	Focus error or disc is in upside down	Press eject or RESET
on display
	The WMA file is copy-protected by DRM	Write disc using WMA files that
	(Digital Rights Management)	are not copy-protected
NO FILE appears	No playable MP3/WMA files found on	Check the device for valid
on display	the device	MP3/WMA files
	CD mechanism position out of	Press EJECT to reset CD
Unit will not accept	alignment	mechanism position
a disc
	CD transit screws still in place	Remove 2 transit screws
		located on top of the unit
NO SUPPORT appears	An invalid ID3 tag version is present	Version 1.0 to 2.0 ID3 tags are
on display		supported.

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