Boss Audio Systems 642CA manual Trouble Shooting, Symptom Cause Solution

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	Cause	Solution
No power.	The car ignition switch is	If the power supply is
	not on.	connected to the car accessory
		circuits, but the engine is not
		moving, switch the ignition key
		to “ACC”.
	The fuse is blown.	Replace the fuse.
Disc cannot be	Presence of CD disc	Remove the disc in the player,
	inside the player.	then put a new one.
loaded or
ejected.
	Inserting the disc in reverse	Insert the compact disc with the
	direction.	label facing upward.
	Compact disc is extremely	Clean the disc or try to play a new
	dirty or defective.	one.
	Temperature inside the car	Cool off until the temperature
	is too high.	returns to normal.
	Condensation.	Leave the player off for an hour or
		so, then try again.
No sound.	Volume is in minimum	Adjust volume to a desired level.
	Wiring is not properly	Check wiring connection.
	connected.
Sound skips.	The installation angle is	Adjust the installation angle less
	more than 30 degrees.	than 30 degrees.
	The disc is extremely	Clean the compact disc, then try to
	dirty or defective.	play a new one.
The operation	The built-in microcomputer	Press the RESET button.
keys do not	is not operating properly	Front panel is not properly fixed into
work.	due to noise.	its place.
The radio does	The antenna cable is not	Insert the antenna cable firmly.
not Work. The	connected.
radio station	The signals are too weak.	Select a station manually.
automatic
selection does
not work.
	15