Trouble Shooting - Boss Audio Systems 620UA User Manual

TROUBLE SHOOTING

Before going through the checklist, check wiring connection. If any of the problems persist
after checklist has been made, consult your nearest service dealer.
Symptom
No power.
No sound.
The operation
keys do not work.
The radio does not
Work. The radio
station automatic
selection does not
work.
Cause
The car ignition switch is not
on.
The fuse is blown.
Volume is in minimum
Wiring is not properly
connected.
The built-in microcomputer is
not operating properly due to
noise.
The antenna cable is not
connected.
The signals are too weak.
If the power supply is connected
to the car accessory circuits, but
the engine is not running, switch
the ignition key to "ACC".
Replace the fuse.
Adjust volume to a desired level.
Check wiring connection.
Press the RESET button.
Control panel is not properly fixed into
its place.
Insert the antenna cable firmly.
Select a station manually.
10
Solution