I need some advice with the following machine problem :
Machine model : HITACHI SEIKI VA-40
X & Y axis are o.k. but Z axis dose not move at all .
There is no message alarm on the fanuc-6 monitor .
The tool changer at its home .
Also the display at the MICON-8 auxiliary control shows -.- 0000 and it is impossible to change modes or display tool changer status .
Also all the leds at the tool changer hydraulic solenoids are off .