Troubleshooting, Problem Cause Action

MXD254B OPERATION

Troubleshooting

Unit will not turn on

(no power)

Unit has power (but no sound)

Unit blows fuses

Excessive skipping

Unit will not accept

a disc

Yellow wire not connected or incorrect voltage	Check connections for proper voltage
Red wire not connected or incorrect voltage	(11~16VDC)

Black wire not connected	Check connection to ground

Fuse blown	Replace fuse
Speaker wires not connected	Check connections at speakers

One or more speaker wires touching each	Insulate all bare speaker wires from
other or touching chassis ground	each other and chassis ground

Yellow or red wire touching chassis ground	Check for pinched wire
Speaker wires touching chassis ground	Check for pinched wire

Incorrect fuse rating	Use fuse with correct rating

Unit is not mounted correctly or backstrap is	Check mounting sleeve and backstrap
not secure	support

Physical defect in media (CD, CD-R or CD-RW)	Check media for scratches

CD mechanism position out of alignment	Press EJECT for 3 seconds to reset
	CD mechanism position

CD transit screws still in place	Remove 2 transit screws located on top
	of the unit.

		Error Codes

Error Code	Cause	Action
ER-1 appears on display	Disc error	Press eject or RESET

ER-2 appears on display	Mechanism error	Press eject or RESET

ER-3 appears on display	Servo error or disc is in upside down	Press eject or RESET