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Re: Spots when printing
It sounds to me like you may have 2 low or defective toners, the Cyan and the Magenta. If you have another machine like this available to you try swapping these 2 toners out to test the theory or you can take these 2 toners out and spin the drum manually (by only touching the gear) checking to see if the spots you see on the pages correspond on the applicator roll of the toners...
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You should print the "Repeating Defects Page"
Using the printer's front panel menu keys perform the following steps:
With Information highlighted, press the OK button.
Scroll to Troubleshooting by pressing the Scroll Up or Scroll Down button.
Press the OK button.
Scroll to Print Quality Probelms by pressing the Scroll Up or Scroll Down button.
Press the OK button.
Scroll to Repeating Defects Page by pressing the Scroll Up or Scroll Down button.
Press the OK button to print the Repeating Defects Page.
Most likely you have a defect on your magenta imaging unit. Switch the Magenta and Cyan imaging units and try the test print....if you have blue spots 3 3/4 then it is the imaging unit (drum). If not you may need to change the belt cleaner assy.
If it isn't the imaging unit then it will be a problem with the fuser rollers, so replace the fusing assembly.
First check the rollers of the fuser assembly and drum are free of any greasy spots as if somebody touched them with dirty hands. if they are clean, you may have dirt on the lenses inside of the laser imaging compartment and to clean you must be careful not to scratch them or move them out of alignment. moving the lenses invites a totally different trouble, and plus they are plastic for some reason maybe it is economical that way use a micro fiber cloth only.
Look on the image drum (bottom of toner cartridge) are there spots on that?? if so clean carefully so as not to damage it or replace the cartridge. If this is not the case open the cartridge door during a print, but before the paper fully enters the fuser and check if the spots are already there, if not the fuser is causing the problems.