Mtnmike293,
I'm glad you asked - I didn't think about that. Eeesh. Sorry!!
Any technician worth his salt would be able to see when the menu was accessed last if he wanted to. Usually damage that occurs from an unauthorized user in the service menu is not covered under warranty, which is why I'm such an open stickler about it. I would not suggest trying to 'reset' anything, as I know one instance where such a reset turned all the picture values to zero, and pretty much scrap-heaped the unit. I'm not trying to scare people, but that's the reality. You can't work on your own car engine, screw it up, and expect the warranty to cover the resulting fix - that logic applies here as well.
Calibrations do often require the service menu, and some people watch and notice things during the calibrator's visit.
I can't speak to the official result of admitting <b>any</b> service menu access from non-auths, so I don't know how that would be logged.
There are some other tech forums where people might be able to address that openly - and this is one - but just... not by me. I might suggest exploring that route first - maybe some online technicians have some experience or insight on that. I did a google search to see what would appear, and I got nothing. For all I know - honestly - that could just be where the list of error icons are stored, such as "Mode Not Supported" or "Function Not Available".
I appreciate your understanding about the prior requests. 
--HDTech