Pre-move out inspection rights vs no-repair clause in lease

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I tried posting this in the landlord forum, but ended up getting replies from people in other parts of the country who don't know the rules specific to California.

I normally have a good handle on who is going to leave damage behind. This is the first time that I've had someone who I think might produce significant damage. Thus, I'm going through the pre-moveout inspection process in a very thorough way.

I've been wondering about the inherent conflict between the clause in the lease which states that they cannot perform their own repairs (for fear of low-quality work, especially shoddy work that might not be immediately visible) and the law surrounding pre move-out inspections. 

If I identify items that should be fixed, are they prevented from fixing these things themselves because of the lease or are the lease terms overridden by the law?