There is a DMG sales and service team in your area. They may give you phone technical support or at least sell manuals with schematics and basic troubleshooting information.
The errors could be as simple as reloading software or costly enough to make it economically unfeasible to repair. It would be cheap insurance to pay a tech to come out and evaluate the problem. Which makes qualified tech's very rare. Just by the serial number, they may already know the history if recorded.