On the Canon scanner 7580, the lid is not closing all the way, which prevents scanning function. I believe the gray handle release that lifts the scanner and resets the scanner may be broken. How do you fix this?

Lid has a couple of other reasons for not closing. but the grey handle does not affect it much. Please see all the screws are correctly tight inside the scanner. Samir Dhingra 9820800633

Please check both hinge assly (left and right of top cover)
to chk this u hav to open left and right cover of the unit.

There grey handle does not reset the scanner. When you press, it pulls back the catch on both sides. If it is working properly, you may need to adjust the two small notches where the catch is held. You can slightly move it so that the scanner closes properly.
S. Mohan