13
XR4115
WARRANTY
Troubleshooting
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
"SD ERR" or "USB ERR"
appears on display
USB or SD card compatibility issue
Device capacity must be less than
32GB.
File system is incompatible - it must
be FAT or FAT32.