Quoted from ScoobaDoo:
Not at all. They all work fine. I’m just wondering if the specific tests run on their own or do I have to keep pushing the buttons during the test?
It depends on the test. Switch tests you choose the setting then tap switches on top of the playfield and it will tell you which switch plus make a noise. Other tests, like coil tests, you may need to select a setting then hit the start button to fire the coil you’ve selected. Lastly there are lighting tests which typically light something for ever option you have on the screen.
The one thing that can be confusing for a new owner is the interlock switch which turns off the high voltage when you open the coin door. For testing, you can pull the switch mechanism out to lock it always on.