52
VM9115
TROUBLESHOOTING
Table.7:.Troubleshooting
Problem
Cause
Corrective.Action
GENERAL
Unit will not power on Radio Fuse blown
Install new fuse with correct
rating
Car battery fuse blown
Install new fuse with correct
rating
Illegal operation
Press the RESET button
located in the bottom right
corner of the front panel
No/low audio output
Improper audio output
connection
Check wiring and correct
Volume set too low
Increase volume level
Improper “MUTE”
connection
Review wiring diagram and
check “MUTE” connection
Speakers damaged
Replace speakers
Heavily biased volume
balance
Adjust the channel balance
to the center position
Speaker wiring is in
contact with metal part
of car
Insulate all speaker wiring
connections
Poor sound quality or
distortion
Pirated disc is in use
Use original copy
Speaker power rating
not compatible with
unit
Connect proper speakers
Speaker is shorted
Check speaker contact
Unit resets itself when
engine is off
Incorrect connection
between ACC and
positive battery wire
Check wiring and correct
TFT.MONITOR
Monitor does not
open automaticallyf
TFT Auto Open is turned
off
Turn TFT Auto Open on
No image
Incorrect connection to
parking brake wire
Check wiring and correct
Parking brake is not
engaged
Stop vehicle in safe place
and apply parking brake
