Troubleshooting - Boss Audio Systems BV9968MB User Manual

General
Problem
Unit not
powered on
Insensitive
screen touch
No audio output
Low audio output
Bad sound or
distortion
Tuner
Problem
Poor reception
Image
Problem
No image
Image flashing
or interference
occurring
Improper image
height/width
display
Cause
Unit's fuse is blown.
Car battery fuse is blown.
Illegal operation.
Place of touch screen is offset.
Improper audio connection.
VOLUME 0
Volume set too low.
Heavily biased volume balance.
Speaker power rating is not
compatible with the unit.
Speaker is shorted.
Casue
Auto antenna is not connected.
Local function is activated.
Casue
Parking wire is not connected.
Parking brake is not engaged.
Video signal connection is not
properly made.
Image aspect ratio is not properly
set up.
Corrective Action
Install a new fuse with right rating.
Install a new fuse with right rating.
Press the Reset button to reset.
Calibrate the screen (SETTINGS
> About > Screen Calibration)
Check wiring and correct it.
Turn up the volume.
Increase the volume.
Check and adjust audio balance
to the center position
Connect proper speakers.
Check speaker wiring.
Corrective Action
Connect and extend the auto
antenna properly.
Activate Distance (DX) function.
Corrective Action
Connect and check the wiring.
Stop the vehicle in a safe place
and engage the parking brake.
Check and correct the wiring.
Change the aspect ratio to
correct one.
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