Lexmark MX521
Initial power-up of the printer results to a 200.91B error.
Make sure that all packaging material is removed from the Imaging Unit.
To do this:
Open the front door.
Remove the toner cartridge bottle.
Remove the Imaging Unit.
Remove any packaging material from Imaging Unit that may not have been removed, e.g., foam blanket, red shipping separator, and/or hand tag.
Reinsert all supplies and close the door.
Power on the device and it should now be READY.
Refer to this sample Video for more information.
A covered input sensor triggers this error. It is most frequently observed when packing materials have not been fully removed and the printer is powered ON.
LEGACY ID: TE885