Just a quick update and for the benefit of anyone who is experiencing similar problems (alarm 960, 910, 911, 930) The fix was to desolder and replace the two SRAM chips (type 43256) these are still available new and only cost a few pounds. The control now boots as it should so it’s just a case of en...

I’ve double checked all the power supply lines on the main board
including the +24v and they all look good. Service exchange main board is £1400 +VAT need less to say I would really like to avoid this if at all possible. Any suggestions gratefully received.

I am in process of rebuilding a zerocentre, machine number 8 I believe with Fanuc OMb. The mc has been powered down for about 2 years and I have just tried to bring her back to life following major mechanical overhaul. When the mc starts it displays error 960 non masked interrupt. This error code is...