I was operating on a Mori Seiki NVX5080 a few days ago and came across an error I had not seen before, nor was I able to find anything online about the particular alarm.
(EX1587 (BICF7) the oil pressure is abnormal)

I read the maintenance manual to see if I could find any information on that, but didn't.

The alarm occured when T1 was switching to T2. And only between those two Tool slots at first. I managed to reset the ATC and the Pot and restart the program. The alarm messed up with the tool numbers.

I figured it might've been an issue with either the tool clamp unit, the ATC unit or the balls in the spindle missing grease, so I cleaned everything and reapplied grease all the places.

It started out once a day, then when the machine had a break for about half an hour and then it happend several times a day with any tool slot.

Anyone in here ever experianced that issue?