Marvel: Contest of Champions™
25
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P a g e
Problem
Possible Cause
Solution
Neither buttons nor audio
work.
PCB connected to faulty USB
port (boot message may indicate
not detected)
To test a USB port, turn off the
game, disconnect the device
from the port, and then connect
the game dongle to the port.
Reboot the game. A No Dongle
message indicates the port is
bad. If the game starts, the port
is working. After the test,
reconnect all devices to the
correct USB ports and reboot.
No sound or bad sound.
Bad connection.
Check connection to speakers.
Volume set too low.
Use VOL UP button on Test
panel to raise volume
Faulty wiring.
Verify all wires are firmly
connected to the speakers, PCB,
and green computer audio port.
Verify that each wire is
connected to the correct port
and no wires are frayed or
improperly shorting to ground.
Blown speakers.
Remove the grill and inspect
each speaker for visible damage.
Run the Sound Test from System
Tests in the Operator Menu to
verify each speaker is working.
Reversed wires.
A weak or low muffled sound is
a sign of reversed speaker wires.
Check for reversed wires on
each speaker.
Faulty PCB.
To verify audio is working at the
computer, connect stereo
headphones to the green
computer audio port.
