Old Syncro 250

[QuestWeld]

Well it has been some time since I posted here but have been lurking quite a bit lately. I recently purchased an older Syncrowave 250. Not a bad deal for everything that was included... weldcraft wp26, rfcs-5 and stick leads for 1500.00. Not to mention all the other goodies along with it. Too many to list now.

My question is how can I determine if this machine has pfc built into it? It seems highly unlikely that it is because the manual I downloaded shows it to be an 88 model.
Serial is JJ508971
Any help with this will be highly appreciated!