1. NC system random failure and its elimination Rapid (?) 160mm CNC boring and milling machine is produced by WOTAN company, introduced at the end of 1986. Since the installation and use of the machine tool, the operation has been relatively normal, occasionally malfunctioning, and there are rules to follow in the maintenance. However, when the machine tool is in normal use for a period of time, there is often a sudden shutdown of the equipment. Observe the fault phenomenon: there is no fault number of NC alarm and PC alarm on the operation panel, and the indicators on the NC system board and PC system board are normal, only the ALARM red light on the operation panel
CNC machine tool typical fault repair