Hi Skinnedrabbit,
Yes and no ....
I had a local representative from Laser Experts take a look. Great people to deal with.
The oscillator was cleaned out and mirrors replaced. Two tubes had holes or cracks and we're replaced. The optical coupler was inspected and found to be not perfect, but ok.
A week later the machine was running perfectly.
Three days after that, the same error came back. I had a 5 ton paper weight again and mounting costs resulting from a complete lack of productivity.
The Laser Experts guy came out again and inpected the oscillator. It seemed fine.
There is a power sensor to the right of the optical coupler. He checked that as well as the connections to the board. It seemed to check out fine. Thesee items weren't replaced but when the machine was powered up again, it worked again. I have no idea what the problem was but suspect that it may be back again.
The 2158 error is very general and can indicate a number of problems. Pitty a trouble shooting type chart isn't freely available.