Correcting Poor Print Quality on an HP Business Inkjet 2800 Printer

To align the printheads

Whenever you replace a printhead, the printer automatically aligns the printheads to ensure the best print quality. However, if the appearance of your printed pages indicates that the printheads are misaligned, you can align them manually.

•  From the control panel

  1. Press green checkmark symbol (Select button) on the control panel.
  2. Press up arrow symbol (Up Arrow button) until MAINTENANCE is highlighted, and then press green checkmark symbol (Select button).
  3. Ensure PRINT QUALITY is highlighted, and then press green checkmark symbol(Select button).
  4. Ensure ALIGN PRINTHEADS is highlighted, and then press green checkmark symbol (Select button).

Maintaining the printheads

If printed characters are incomplete, or dots or lines are missing from printouts, this may be caused by clogged ink nozzles and you might need to clean the printheads.

To clean printheads automatically

Note Clean the printheads only when necessary; cleaning uses ink and shortens the life of the printheads. There are three levels of cleaning available. After one level of cleaning, perform the next level of cleaning only if the results are not satisfactory.

•  From the control panel

  1. Press green checkmark symbol (Select button) on the control panel.
  2. Press up arrow symbol (Up Arrow button) until MAINTENANCE is highlighted, and then press green checkmark symbol (Select button).
  3. Ensure PRINT QUALITY is highlighted, and then press green checkmark symbol(Select button).
  4. Press up arrow symbol (Up Arrow button) until the option to clean printheads is highlighted, and then press green checkmark symbol (Select button).

Calibrating the linefeed

If regular horizontal bands appear in printed text or graphics, calibrate the linefeed.

•  From the control panel

  1. Press green checkmark symbol (Select button) on the control panel.
  2. Press up arrow symbol (Up Arrow button) until MAINTENANCE is highlighted, and then press green checkmark symbol (Select button).
  3. Ensure PRINT QUALITY is highlighted, and then press green checkmark symbol(Select button).
  4. Press down arrow symbol (Down Arrow button) until LINEFEED CALIBRATION is highlighted, and then press green checkmark symbol (Select button).
    Two linefeed calibration pages print.
  5. Follow the instructions on the control-panel display to complete the process.
    1. On the calibration page, find the box that has the fewest horizontal bands across it, and note its number.
    2. Press up arrow symbol (Up Arrow button) or down arrow symbol (Down Arrow button) to select the number of the box, and then press green checkmark symbol(Select button).