Hello.

Give this a try (from Minolta Support):

1. With the Menu ENGINE selected, press the Down key.
2. Press the PREV key until SERVICE is displayed
3. Press the Select key to display "FACE COUNT".
4. Press both the Select and Down keys at the same time and hold for at least 3 seconds.
5. With Service Person displayed, press the Down key.

You are now in Service Mode

Select "Reset Counter Fuser Unit"

Exit by selecting the Cancel key.

Hope this resolves your problem.