Which diagnostic steps are appropriate when a door misalignment is suspected?

• A. It is safe to operate doors beyond their limits.
• B. Inspect door alignment, verify interlocks and limit switches, and check for binding in door or hinge.
• C. Replace the entire door mechanism immediately.
• D. Ignore the door issue if the gear extends.

Answer: (B)

When a door misalignment is suspected, focus on diagnosing both the physical position of the door and the control/sensing hardware that governs its operation. Start with inspecting door alignment visually and checking for any binding or interference in the door, its tracks, or hinges. Then verify that interlocks and limit switches are functioning correctly, because a fault in these components can cause the system to misinterpret the door’s state even if the door itself is fine. If binding is found, address it and recheck; if the interlocks or limit switches are faulty, they need repair or replacement to restore proper operation. Safely diagnosing rather than forcing operation beyond limits or replacing the entire door mechanism without assessment, and not ignoring the issue while the gear is extended, are essential safety considerations.