Offset is mentioned on page 43-44
Print and Cut Misaligned is mentioned on page 60
Your not being very specific, is it way off or is it a hair off? These things are far from perfect but for most small issues you just have to apply a little common sense, another words if it's just a bit off you need to create bleeds/traps within your artwork (print just beyond your cut path to compensate for the misalignment). Keep in mind these printers use heat to print so there is some expansion and contraction involved with the media.
If it's way off there are probably adjustments that can be made in Sevrice Mode but I've never been able to acquire a service manual so I'm not quite sure about that.
Favorite job ever done on my PC-600 was the grill on this race car, not bad for a printer that everyone says can't do nothing but small spot color decals.