asked Jan 30, 2001 at 6:13am
Apple Apple LaserWriter LaserWriter

LW 8500 "ROS motor" error

Our school District has 2 LaserWriter 8500's with identical problems. On attempted print, the lights indicate a paper jam (there is none; no paper was fed) and the print monitor indicates "service call needed: ROS motor".

We've been unable to locate any information about this mysterious "ROS motor" in Apple's service information.

Any ideas? Thanks in advance.
I don't have any idea what that means. After my last horrible service experience with an 8500, I will no longer work on them. For what it'll cost to repair, I'd advise writing it off and getting an HP5000. The money you save on toner and service will more than pay for it.
by moe on Jan 30, 2001 at 6:28pm Add comment
In Xerox terminology, a ROS is a Rotating Optical Scanner, this is a multi faceted rotating mirror on a motor. The laser beam hits the mirror facets for scan and the motor speed is monitored by sensors, so it could be that the motor speed is incorrect.Hope this is useful (?)
by Anonymous on Feb 16, 2001 at 1:30pm Add comment
Thanks for the info. On Lexmark printers they call it a Printhead error. Kind of strange terminology for a laser scanner assembly.
by moe on Mar 8, 2001 at 12:02pm Add comment
its a cheap fix, but you have to send the printer in to us at [email protected] fix Apple and these printers all the time.email me specifics.Is the paper jam LED on and does it stay on?
by unknown on Mar 31, 2001 at 5:59pm Add comment
I've just recently run into the same "ROS Motor" error on my 8500. The problem actually appears to be that the toner cartridge is seizing up. On the advice of a local service provider, I swapped out the cartridge for a different one and the problem is now gone. I hope this tip works for anyone else who encounters this problem... it certainly made for a much better day for me!
by unknown on Apr 5, 2001 at 9:44am Add comment