Allo,
We have about over a 12 Fanuc S420 RJ2 robots. Some came with I size cabinet with memory configured 4mb, 4mb and 1mb, Others are B size Cabinets with 8mb, 8mb and 1mb.
Some robots are running spottool+, some are handling tool.
I have an instance where we had to replace the CPU on B size robot running spottool+, this is a former GM robot.
We have a few Ebay CPU. But none of them seem to want to work.
I set the right amount of memory so the images can be restored, but it will not work.
Sometime the image on PCMCIA card gets trashed, where I must reformat it on some other robot. Sometimes it all loads and refused to boot after clearing 53 blocks.
Some of the CPU came with BMON 4.1 anb do not have the restore function. Fair enough, It seems V4.2 and up has the restore function.
This is located on an eprom dip40 Hitachi located on the CPU board.
This also got me thinking, could this eprom also be the cause for the image to not work?
This would mean I need to acquire the proper eprom version? I checked on a similar robot and the eprom was a Hitachi hn27c1024hg-85 pgm 12.5v with a sticker 7D05 001F. The sticker is not at all similar to what is on the purchased CPU, which have a V4.10, V4.20, V4.22 for the most part.
If I need a special EPROM, is it possible to copy one of the existing ones that are in a functioning robot? I assume EPROM copier are available.
Thanks.