Duplex unit Have a 6200DN which developed a motherboard fault. I bought a new Xerox Phaser 6250N and wish to know procedure to instal the 6200 Duplex Unit to the new 6250 machine.

SOURCE: My Xerox Phaser 6250 won't duplex all of a sudden

I don't have an answer, but I can add some detail since I have the same problem (6250 that suddenly won't duplex).

I have a wired network with multiple Vista machines connected and have been duplexing just fine for YEARS with the same PCs and same drivers. One day my wife complained she couldn't duplex and I messed around, updated drivers, rebooted everything, etc. etc. and finally gave up and sent the print job from my laptop where it duplexed just fine.

About a week or so later I noticed that my laptop would no longer duplex either! Once again I updated the drivers, rebooted, tried different settings, etc. etc. but no luck.

I'm pretty convinced that a Windows patch has caused this issue (which is why there is a timing difference between my machines). I've rolled back my system to remove several patches and things seem to work fine again, however I'm not exactly sure which patch causes the problem AND within a few days Microsoft reinstalls the patch automatically.

Unfortunately I'm not confident that Xerox will put much effort into fixing this driver problem since this is not only an "old" printer, but I don't think many people do much duplexing (so there won't be many people yelling for help).

I'll let you know if I find a better work-around or fix.