Single-Function: CS820, CS827 and C6160
Multifunction: CX820, CX825, CX827, CX860, XC6152, XC6153, XC8155, XC8160 and XC8163
Whenever you replace supplies inside the printer, you may notice excessive toner dust, usually of mixed colors (i.e., purple or brown), on the Yellow Imaging Unit.
The existence of toner dust in itself, particularly that of individual colors (Yellow, Magenta, or Cyan) inside the printer, is considered normal (as described in Lexmark CS820 & CX82x ? Excess Toner (Dust) Can Be Found Inside the Printer
However, mixed colored toner dust (i.e., purple or brown) could be a sign of waster toner leaking from the Image Transfer Unit (ITU), especially if its concentration is seen only on the yellow imaging unit or below the right-hand side of the ITU.
Should you find the level of dusting prohibitive, please contact Lexmark Technical Support to set up printer service.
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LEGACY ID: SO7872