Konami Over drive Volume error

[gnomx]

Hi there guys.
I have a problem to boot this pcb arcade game.

When I plugged it , I get this error : " Volume Error ".

[Zebius]

This game uses a steering wheel (connected to a potentiometer).
During the boot sequence the wheel should be in the resting/middle position, so you have to adjust the potentiometer until the "volume" is equal to 80.

[gnomx]

This game uses a steering wheel (connected to a potentiometer).
During the boot sequence the wheel should be in the resting/middle position, so you have to adjust the potentiometer until the "volume" is equal to 80.

Ok , where is located this trimmer?
I don't have a steering wheel to do it.

[Zebius]

You can download the manual/wiring diagram from this page:
https://www.arcade-museum.com/game_deta ... me_id=8944

[gnomx]

You can download the manual/wiring diagram from this page:
https://www.arcade-museum.com/game_deta ... me_id=8944

I've install a potentiometer 2kohm and now works.