after some help diagnosing a fault on a Fanuc AC spindle drive in a old OKUMA LB 15.

Anyone ? care to have ago

I posted this on the okuma section without any replies , Thought id try here as its fanuc

SDU Alarm on Okuma LB15 it has fanuc drive
AC Spindle Drive A06B-6044-H018

Fault code NUMBERS 1 2 8
Book indicates Voltage at the DC capacitor has risen abnormally
Voltages measure on the circuit board were all ok except the +24 volt which showed 27.8 volts ??
All fuses are ok

I have turned the machine off a few times with rest periods with rest periods in-between but still the error comes up when the computer comes on.



Thanks