This procedure will show you how to check and replace the fuse 320V Power Supply (MMPS).
Machines equipped with 320V Power Supply (32-5566A).
This Procedure Applies to the Following Parts:
Caution: When you do maintenance or repair on CNC machines and their components, you must always follow basic safety precautions. This decreases the risk of injury and mechanical damage.
Danger: Before beginning any work inside the control cabinet the High Voltage indicator light on the 320V Power Supply / Vector Drive must have been off for at least 5 minutes.
Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not fully understand. If you have any doubts about doing a procedure contact your Haas Factory Outlet (HFO) and schedule a service visit.
Power on the machine.
Zero Return and verify that there are no alarms generated during this process.
If alarms occur, check the fuse again and check for a short circuit in the axis drive system. Refer to the following troubleshooting guides: