Diagnostic Screen SP 7200/7500

 

Does anyone know how to get to the Diagnostic Screen/Mode on a Garmin StreetPilot 7200/7500 ?

I know there is a diagnostic screen for many other Garmion models and I would think that there is a way to get to it on the 7200/7500 too.

I have tried some of the methods which work for other models, but they seem to differ based on the model.

Thanks