I believe the button under the key is also a reset but I may be wrong on that one. I know on one of my machines the sliders did two different things.

1. Changed the machine from automatic payout to being able to store up to 50 credits before paying out.

2. I cannot remember what the second one did at the moment as I have since sold that machine.

I am sure someone who can translate the characters will be along soon and can shed some more light on it.

Can you post a picture of the front of the machine as well?