I am replacing a small simple diode on my fanuc 10t spindle velocity control unit.
I cannot find an identifier on it other than the regular diode sign on the board.
It is small glass and one blue stripe with no other markings.

Yes I have to replace the 4 major transistors they all blew.
It blew a small fuse too.
But that is another matter.

My maintenance book is inconclusive listing 4 different A50L-2001 diode #s
(A50L-2001-0081/60 A50L-2001-0097/U06G perhaps likely)
and one A42L-0001--0103.
I find no way on Sunday to cross reference this to a 1NXXXX number to order a replacement.

I see some with a green stripe too on another area of the board.
Does Fanuc use a standard diode?

It is in a section with 2 diodes on top of 2 resistors by the 8 large transistors.
Some clues would he appreciated.
Thanks
Steve