We have several M402n's here in the office, but mine is the only one with these issues:
When I print PDF's I have 2 problems:
1. It literally takes a full minute between the time I tell my document to print for it to actually print. My printer has to really think long and hard about printing pdfs.
2. If I print a pdf document (doesn't matter if it's one I've created/downloaded/our accounting software creates), and it's more than 10 pages in total, I'll get about 6 pages, the printer will halt (as if thinking), then will print garbage as the remainder of the document. I can print it in 10 page increments, but then we fall back to problem #1, and I spend a lot of time waiting for my printer.