Hitachi Seiki HITEC-TURN 20SII Error

Hi,
i stated my lathe today just to run it like we do every month if it isn't working and today the X axis was making a terrible vibration even when it wasn't moving, like the servo was chattering back and forth.
then it cut out and now has the following errors 931, 930, 310

when i push standby the hydraulic pump starts for a second or so then cuts out.

1996 machine with Seiki multi controller

can anyone help me please?

Have you checked the servo cards? PM me a pic of them