I have been having some issues with a D125. While printing large PDF files the file cancels itself. Sometimes I can have a 400 page PDF to print 3 sets. 2 of the come out OK and the third is missing pages.
Also it could be printing and when you check the document is missing pages without any previous error or message.
I have tried sending smaller files and get the same problem every now and then.
Any ideas what this could be?
Make sure to print via an LPD port and not RAW.
Set LPD memory to HDD via
Machine Status > Tools > System Settings > Print Service Settings > Allocate Memory (Wording may not be exact, I am referencing from a similarish Fuji Xerox based controller as I don't have a D125 in my lab)