I don't think 3dsmax has any one wizards that attempt clean up everything with one button, but it does have a few specific tools that help you find specific problems and fix them either on your own or with the help of other tools.
xView
In the upper right corner of any viewport click the [+] and turn on xView. It will help you find specific things by highlighting them on the screen. This can be pretty resource intensive and kill your FPS so you don't want to leave it on all the time.
How you fix something really depends on what needs to be fixed.
Quadrify (in the graphite modeling tools) will help you get a quaded mesh that was triangulated back to quads.
There are several selection options that help you find n-gons with more than XX sides (also in the graphite modeling tools).
Everything else that I can think of starts to get really specific...
In my general experince between the two, 3dsmax seems to make less nightmare meshes that need to be cleaned. It's optimization is better, it's booleans are cleaner and for a few releases they focused on making sure the meshes stayed clean and didn't need fixing.
Yup, 3dsmax doesn't let you create problems in your mesh in the first place (like lamina and non-manifold geometry). You can find scripts for the other useful things in Maya's cleanup, like selecting non-quads faces, triangulating, etc
Oh ok, cool. I've used the xView mode, but not the Quadrify. I'll have to test it out. Yeah, I'm coming from mainly Maya, so it's interesting how some workflows changes. I'll definitely check out some scripts in Max that could be helpful to try out. Thanks guys.
In the modifiers list you can select STLcheck and it will spot you if your mesh has any technical problems like open faces, you can also select the vertex you want to fix and use weld, i sometimes select a big proportion of the mesh and put a value of 0.001.
Max 2014 introduced a MeshInspector tool that is active by default. It inspects meshes for possible errors during load/save and topology changes. It does'nt provide an interface except a popup in caser of a detected error ( can be disabled ) . It's even in the docs, but i think the UI references there are plain wrong ( at least i don't have it anywhere in the menus )
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xView
In the upper right corner of any viewport click the [+] and turn on xView. It will help you find specific things by highlighting them on the screen. This can be pretty resource intensive and kill your FPS so you don't want to leave it on all the time.
How you fix something really depends on what needs to be fixed.
Quadrify (in the graphite modeling tools) will help you get a quaded mesh that was triangulated back to quads.
There are several selection options that help you find n-gons with more than XX sides (also in the graphite modeling tools).
Everything else that I can think of starts to get really specific...
In my general experince between the two, 3dsmax seems to make less nightmare meshes that need to be cleaned. It's optimization is better, it's booleans are cleaner and for a few releases they focused on making sure the meshes stayed clean and didn't need fixing.
Read more here
http://docs.autodesk.com/3DSMAX/16/ENU/3ds-Max-Help/files/GUID-FAF35B39-0627-40AA-82C5-9B811CB3B9D5.htm
It provides a Maxscript interface too...
Maxscript Docs
http://docs.autodesk.com/3DSMAX/16/ENU/MAXScript-Help/files/GUID-F6F42FCD-36CA-4D76-9B17-EA5A661AA348.htm
To disable the automatic fixing you can edit your 3dsMax.ini