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Problem Cause Action
Unit will not turn on
(no power)
Yellow wire not connected or incorrect voltage
Red wire not connected or incorrect voltage
Check connections for proper voltage
(11~16VDC)
Black wire not connected Check connection to ground
Fuse blown Replace fuse
Unit has power
(but no sound)
Speaker wires not connected Check connections at speakers
One or more speaker wires touching each
other or touching chassis ground
Insulate all bare speaker wires from
each other and chassis ground
Unit blows fuses
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
Excessive skipping
Unit is not mounted correctly or backstrap is
not secure
Check mounting sleeve and backstrap
support
Physical defect in media (CD, CD-R or CD-RW) Check media for scratches
ERROR-01 appears
on display
Disc read error Press eject or RESET
ERROR-02 appears
on display
Focus error or disc is in upside down Press eject or RESET
ERROR-03 appears
on display
FAT error Press eject or RESET
ERROR-04 appears
on display
MP3/WMA decode error Press eject or RESET
PROTECT appears
on display
The WMA file is copy-protected by DRM
(Digital Rights Management)
Write disc using WMA files that are not
copy-protected
NO FILE appears
on display
Selected file is not available in direct or
alphanumeric search modes
Repeat search using valid parameters
INVALID appears
on display
The file format is incompatible Write disc using valid audio files with
.mp3 or .wma file extensions
Unit will not accept
a disc
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
Troubleshooting - General
XDMR7710 OPERATION