Haas Alarm: 946 (M) APC-PALLET CLAMP TIMEOUT – The pallet in the mill did not clamp in the time allowed. Check for foreign objects under the pallet and between the pallet and the clamp plate. Verify there is an adequate supply of air pressure and air volume. Check air solenoids for sticking and air release ports for clogging. Check the pallet clamped position switch for correct operation, the switch and wiring for damage, and pallet alignment. Check the pallet clamp mechanism for correct operation. After determining the cause and correcting the problem, press Tool Changer Restore to enter pallet changer recovery, recover the pallet changer, and then continue operation. Parameter 317 specifies the pallet clamp timeout period.