Hello all, I've got a Hitachi Seiki HC 800x2500 with Fanuc11m M16 ii V3.2
with 8 overtravel alarms (HARD)

OT007X +OVERTRAVEL (HARD)
OT008X -OVERTRAVEL (HARD)
OT007Y +OVERTRAVEL (HARD)
OT008Y -OVERTRAVEL (HARD)
OT007Z +OVERTRAVEL (HARD)
OT008Z -OVERTRAVEL (HARD)
OT007B +OVERTRAVEL (HARD)
OT008B -OVERTRAVEL (HARD)


the machine is far from hitting the limits, and I can't get the errors cleared or the HYD pump on,
I have measured 24volts at the switches when I depress it in with my finger.

Also, I'm getting chain errors on the ladder page.

what are some of the things I should start to check?
Thanks