It depends a bit on why the original post was downvoted. Asking for explanation when the problem is obvious, or on a forbidden topic tends not to get back to neutral.
Obvious to regular users != obvious to new user
Monkeymind knew why he was being downvoted.
Edit: But, I agree with your point that many community norms that will get one downvoted are not accessible to new members.
It depends a bit on why the original post was downvoted. Asking for explanation when the problem is obvious, or on a forbidden topic tends not to get back to neutral.
Obvious to regular users != obvious to new user
Monkeymind knew why he was being downvoted.
Edit: But, I agree with your point that many community norms that will get one downvoted are not accessible to new members.