Ir 261 jumps forward and backwards moreso after oiling

The roller brush is not balanced. Check everything inside the head unit. Brush, belt and debris. The belt may have burn marks from the motor shaft or if someone worked on the vacuum cleaner beforehand, this could be the only reason.

There are two possible options one is the belt for the drive is shot, the other is that the transmission is shot we tend to go out.

Air motors have plastic fins in them that make it turn. They slide in and out of slots on the motor. You can tear it apart and clean them, but if you don't put all parts back in just right, gun will not work at all. I usually try to run wd-40 thru the gun. It is messy, but the more the better. You can also use carb cleaner (brake cleaner will eat paint, rubber, anything pastic) and then oil with air tool oil. Careful of the cleaner it is flammable!

1) The drive belt between the engine and transmission has broken or jumped off a pulley.
OR
2) Your hydrostatic transmission is dead.

DO NOT STICK YOUR FINGERS UP INSIDE A RUNNING MOWER TO SEE IF THE DRIVE BELT IS MOVING.

fill it wit oil hold in triger and flick between forard and reverse should free up the vains inside

zero cross signal error

Try connecting 222 back up and look up the call forwarding cancel code. My guess, is your mystery phone system is a Nortel CICS which uses a FEATURE 4 to set and FEATURE #4 to cancel CF.

If you can't find the Call Forwarding codes in your user's guide, try posting back the system make and model number as a comment and I'll see if I can get you the proper codes.

Carl

NOT exactly a solution, but may help you with your problem: I'm also a Owner of a 261 ( In fact 90% 0f all my Air Tools are IR) that I used everyday when I was working on Terex Equipment & EMD Locomotives. I "Upgraded" the Major Parts inside my Gun to the "Industrial Line" rather than the Automotive Parts since the 261 is classified as a Automotive Tool..and Installing an Adjustable Regulator on the Gun Helped a Lot too...by "tweeking" my Gun out, I was Pumping almost as much torque as some of the 1" Guns...
FYI: Don't Over Oil as the Oil will absorb into the Vanes, causing them to Expand in thickness "Permanently"...just 2-3 drops of a Hi-Grade Air Tool Oil before starting the Day is enough...sounds to me like your Picking up some contamination someplace??

I would suggest to open the remote and clean the contacts very gentle using rubbing alcohol. If the cleaning does not work, it means the remote keypad is not longer functional.

Have you ever done a thorough internal oil of your machine? These mechanical machines rely on oil to keep moving but, over time, that oil dries and starts to stick things together. I do a deep internal oil about annually and oil the hook at least every 8 hours of sewing.

Wheel on right side that controls the needle up and down is very tight...

There's an oil diagram in this answer:

http://www.fixya.com/support/t26371053-am_looking_bernina_930_service_manual

How do you open bernina 930 sewing machine especially removing the side...