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HP Color LaserJet 2550 Series Printer - Cleaning and Calibrating the Printer


In order to ensure a high level of performance and print quality it is necessary to occasionally perform maintenance procedures. The following sections provide useful information and instructions about cleaning and calibrating the printer.

Cleaning the printer

During the printing process, paper, toner and dust particles can accumulate inside the printer. Over time, this buildup can cause print-quality problems such as toner specks or smearing. This printer has a cleaning mode that can correct and prevent these types of problems.

Cleaning the engine (preferred method)

The most effective solution resides within the HP LaserJet Toolbox for the HP Color LaserJet 2550 series product. Initiate the Cleaning Process from the Cleaning Mode section of the Service section of the HP LaserJet Toolbox.
  1. Click the Device Settings button in the upper right hand corner of the HP Toolbox page.

  2. Click the Settings tab.

  3. Click the Service button on the Settings page.

  4. Click the Start button in the Cleaning Mode section of the Service page.

  5. This will pull a blank page from the first available paper tray and step the blank page through the cleaning process.

Clean the engine

NOTE: The following procedure must be performed from the HP Toolbox. To clean the engine when the computer is running an operating system that does not support HP Toolbox, see the late-breaking Readme on the root of the CD-ROM, or click here to visit .
  1. Make sure that the printer is turned on and in the Ready state.

  2. Open the HP Toolbox.

  3. On the Troubleshooting tab, click Maintenance , click Cleaning Page and then click Print . A page with a pattern prints from the printer.

  4. At the printer, remove any print media that might be in tray 1.

  5. Remove the page that printed and load it face-down into tray 1.

    Figure 1: Load the page

  6. At the computer, press Clean .

NOTE: Allow a minimum of 2 minutes for the process to complete. The Attention light begins flashing when the cleaning process begins. This due to the empty paper. Once the process has completed, load paper back into the paper bin; the printer will return to the Ready state.


Calibrating the printer

The printer automatically calibrates at various times. Adjust the calibration settings by using the HP Toolbox.

Environmental differences, aging print cartridges, aging toner, and an aging imaging drum might cause fluctuations in image density. The printer accounts for this with image stabilization control. The printer automatically calibrates at various times to maintain the highest level of print quality. It is also possible to request a calibration by using the HP Toolbox.

The printer does not interrupt a print job to calibrate. It waits until the job is complete before calibrating or cleaning. While the printer is calibrating, it pauses printing for the time that is required to complete the calibration.

Calibrate the printer at the printer

Press (GO ) and (ROTATE CAROUSEL ) simultaneously to start a calibration.

Calibrate the printer from the HP Toolbox

NOTE: This procedure applies to Windows operating systems only. Macintosh users should calibrate the printer manually using the procedure above.

For any issues trying to open the HP Toolbox CLICK HERE to view the document titled HP Color LaserJet and LaserJet Series Printers - Troubleshooting HP Toolbox (doc ID c00064492)

  1. Open the HP Toolbox in one of these ways:

    • On the desktop, double-click the HP Toolbox icon.

    • On the Start menu, click Programs , Hewlett-Packard , HP color LaserJet 2550 , and then click HP Toolbox .

  2. Click Print Quality Tools on the left side of the screen on the Troubleshooting tab.

  3. Click Color Calibration .


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