There is a printable Robot Inspection List on each of the qualifier web pages.
Teams should print out and go through the Inspection Checklist before they come to inspection. Before they come to the event is better! Many don't know what the questions mean and end up with serious problems that require significant changes.
The most common problems were inaccessible (or too open to robot to robot contact) power switches, robot controller phones not visible to FTAs during matches, and missing or numbers too small. Pre-event self inspection will greatly speed up the hardware inspection process.
Please refer to the Game Manual (go to http://www.firstinspires.org/resource-library/ftc/game-and-season-info) for questions.