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Problem
Unit will not turn on
(no power)
Unit has power
(but no sound)
Unit blows fuses
NO FILE appears
on display
NO SUPPORT appears
on display
Cause
Yellow wire not connected or incorrect
voltage Red wire not connected or
incorrect voltage
Black wire not connected
Fuse blown
Speaker wires not connected
One or more speaker wires touching
each other or touching chassis ground
Yellow or red wire touching chassis
ground
Speaker wires touching chassis ground
Incorrect fuse rating
No playable MP3/WMA files found on
the device
An invalid ID3 tag version is present
XR4120 OPERATION
Troubleshooting
Check connections for proper
voltage (11~16VDC)
Check connection to ground
Check connections at speakers
Insulate all bare speaker wires
from each other and chassis
Check for pinched wire
Check for pinched wire
Use fuse with correct rating
Check the device for valid
Version 1.0 to 2.0 ID3 tags are
Action
Replace fuse
ground
MP3/WMA files
supported.
11
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