Some users may experience the following symptoms:
Lines and/or streaks on printed pages
Noticeable toner dust inside the printer
More ‘cleaning cycles’ than usual
Go to the Software and Drivers Download page at HP.com and install the latest available firmware for the printer.
Go to this document for instructions on upgrading the printer’s firmware: HP Enterprise printers – Update firmware using a USB flash drive or the Embedded Web Server (EWS) (28K) (ID: emr_na-c03847902) .
Ensure that the Toner Collection Unit (TCU) is not full. If the TCU is full, it must be replaced.
For the M552/M553, go to this document for instructions on replacing the TCU: HP Color LaserJet Enterprise M552, M553 – Removal and replacement: Toner collection unit (TCU) (8K) (ID: emr_na-c04740542) .
For the M557, go to this document for instructions on replacing the TCU: HP Color LaserJet Enterprise MFP M577 – Removal and replacement: Toner collection unit (TCU) (9K) (ID: emr_na-c05013637) .
From the control panel of the printer, print a Cleaning Page: Device Maintenance > Calibration/Cleaning > Cleaning Page.