44
VM9125
TROUBLESHOOTING
Table 4: 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
