Boss Audio Systems 620UA manual Trouble Shooting, Symptom Cause Solution

Page 11

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 not

If the power supply is connected

on.

to the car accessory circuits, but

 

 

 

the engine is not running, switch

 

 

the ignition key to “ACC”.

 

The fuse is blown.

Replace the fuse.

 

 

 

No sound.

Volume is in minimum

Adjust volume to a desired level.

 

 

 

Wiring is not properly

Check wiring connection.

 

connected.

 

The operation

The built-in microcomputer is

Press the RESET button.

keys do not work.

not operating properly due to

Control panel is not properly fixed into

 

noise.

its place.

The radio does not

The antenna cable is not

Insert the antenna cable firmly.

Work. The radio

connected.

 

station automatic

The signals are too weak.

Select a station manually.

selection does not

 

 

work.

 

 

 

 

 

10

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Contents Page 620UA Contents Installing the unit InstallationTo Detach the Control panel Using the Detachable Control PanelPrecautions when handling To Install the Control PanelWiring Connection Location of Keys OperationUSB Operation Radio OperationRepeating the Same Track Pausing PlayingMemory Card Operation Previewing ALL TracksUSB/SD/MMC Player Remote ControlSpecification GeneralSymptom Cause Solution Trouble Shooting