Work Zone GMP Manual
08/25/2022
20
7. TROUBLESHOOTING
7.1 Common Problem
Please confirm that all connectors fit tightly.
Symptom
Possible Cause
Recommended action
Game will not
start
Frame assembly connector is
loose.
Check connector.
Frame assembly fault
Contact with UNIS Service.
Power off
Circuit protector make power SW
in off state.
Turn on power SW again. If appeared
again and again, machine has
anomaly. Please contact with UNIS
Service.
No sound
Low volume
Raise the volume.
Connector loose.
Check connector.
Speaker fault.
Check speaker.
POT installation error.
Install POT correctly.
POT fault.
Change POT.
Audio cable problem.
Reconnect the audio cable or change
it.
Display black
screen
Check connectors.
Plug in connector tightly
Display fault.
Utilize another source such as a PC to
verity if the display is operational.
Display blue
screen
VGA signal cable is loose.
Check VGA cable
