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I have the maintenance manual Fanuc 6M Model B-54045E01. Found a troubleshooting flowchart on page 35 that shows the exact screen I have with SLAVE READY at the top (I mistakenly wrote SERVO READY...

Thanks for the previous advice.
Machine has BMU no battery. Definitely not parameter or BMU switches. Machine is running OEM factory issued parameters same as it always has. We manual enter the...

I'm leaving the machine always powered with the estop in now. No problems yet.
If power is lost I will connect the CRO and power on to see if there is a PSU fault when firing up from cold.
There...

With the PC on send I changed the mode switch from tape to mdi and cycled the estop a few times and all of a sudden the pc started to send.
Had the same problem again later and this sequence didn't...

Just changed 04C to 06C motherboard and can't establish RS232 comms with same input parameters.
Any ideas?

Does anyone know what significance the suffix has on the FANUC boards. Does it just refer to minor revisions that do not affect function?
I have a A16B-1000-0030/04C and A16B-1000-0030/06C board (6M...

Have a 1985 model Fanuc Robodrill 6MB system with problems.
Used to run fine but now runs for a while then CRT and controls won't come on when the machine starts.
A BMU delete and reinstall...