Okuma Alarm-C 3791 Mist air lubrication unit
The M spindle mist lubrication unit failed
Code
1->The oil mist level normal signal remained OFF for more than 3[s].
2->The X-/Z-axis oil mist level normal signal remained OFF for more than 3[s].
3->The M spindle oil mist level normal signal remained OFF for more than 3[s].