I own two LaserWriter 16/600s and both have recently done something that has left me baffled. After years of unproblematic use, both printers recently started printing very dirty pages. The print itself is weak in places with dark streaks of toner along one paper edge. There is also a fine dusting of toner all over the entire page, so that it seems that I am printing onto grey paper, although it is standard white laser printer paper. Have my LaserWriters reached the end of their lives or is there something I can do to bring them back? Any help will be greatly appreciated and thank you in advance!