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HP Officejet Pro 8000 (A809a) and 8000 Wireless (A809n) Printers - Poor Print Quality Immediately after Setup, an Extended Idle Period, or after Printhead Replacement

This document is for the HP Officejet Pro 8000 (A809a) and 8000 Wireless (A809n) printers.
After the initial printer setup, print quality is poor. This issue can also occur if the printer is used infrequently or not at all for a prolonged period, or after replacement printheads are installed. Black text prints poorly, and printouts might have horizontal streaks or lines.
HP recommends that you use genuine HP ink or toner supplies. HP cannot guarantee the quality or reliability of non-HP or refilled cartridges. If you do not use genuine HP cartridges, the steps in this document might not resolve the issue. To check the authenticity of your cartridges, go to hp.com/go/anticounterfeit.
Visit HP SureSupply to check ink or toner cartridge compatibility or purchase replacement cartridges and other supplies.
  1. If necessary, select your country/region.
    Figure : Country/region selector
    Selecting your country/region
  2. Follow the on-screen instructions to order new supplies or check cartridge compatibility with your printer.
You can also purchase genuine HP cartridges and supplies from other retailers.
Solution two: Align the printer
Make sure paper is loaded in the input tray and then follow these steps to align the printheads through the HP software.
  1. Open HP Solution Center:
    • Windows XP: Click Start, click All Programs, click HP, and then click HP Solution Center.
    • Windows Vista: Click the Windows icon (), click All Programs, click HP, and then click HP Solution Center.
    HP Solution Center opens in a new window.
  2. Click Settings (), and then click Printer Toolbox. The printer Toolbox opens.
  3. Click the Services tab, and then click Align the Printheads.
  4. Follow the on-screen instructions to align the printheads. An alignment page prints when the process completes.
  1. Open HP Solution Center:
    • Windows XP: Click Start, click All Programs, click HP, and then click HP Solution Center.
    • Windows Vista: Click the Windows icon (), click All Programs, click HP, and then click HP Solution Center.
    HP Solution Center opens in a new window.
  2. Click Settings (), and then click Printer Toolbox. The printer Toolbox opens.
  3. Click the Services tab, and then click Clean the Printheads.
  4. Click Clean to begin the cleaning process, and then follow the on-screen instructions to complete the process. A test page prints after the cleaning process completes.
    Figure : Test page
Solution four: Replace the printhead
Follow these steps in the order presented to print a Print Quality Diagnostics report, determine the problem printhead, and then replace the problem printhead.
Step one: Print a Print Quality Diagnostics report
Follow these steps to print a Print Quality Diagnostic report.
  1. Open HP Solution Center:
    • Windows XP: Click Start, click All Programs, click HP, and then click HP Solution Center.
    • Windows Vista: Click the Windows icon (), click All Programs, click HP, and then click HP Solution Center.
    HP Solution Center opens in a new window.
  2. Click Settings (), and then click Printer Toolbox. The printer Toolbox opens.
  3. Click the Services tab, and then click Print a PQ (Print Quality) Diagnostic Page. The Print Quality Diagnostic report prints.
    Figure : Print Quality Diagnostic report
Examine the color blocks labeled Test Pattern 2.
The color block with the white, horizontal streaks indicates the problem printhead. Use the guidelines in the following guidelines to determine which printhead to replace:
Condition
Action
The black color block shows white horizontal lines
Replace the Black/Yellow (KY) printhead
The cyan (blue) color block shows white horizontal lines
Replace the Magenta/Cyan (MC) printhead
The magenta color block shows white horizontal lines
Replace the Magenta/Cyan (MC) printhead
The red color block shows white horizontal lines
Replace the Black/Yellow (KY) printhead
The green color block shows white horizontal lines
Replace the Black/Yellow (KY) printhead
Step three: Replace one or both printheads
After you determine the problem printhead(s), follow these steps to install one or both of the replacement printheads.
The following video demonstrates how to install and replace ink cartridges and printheads.
  note:
The video shows the HP Officejet Pro 8000. The outside of the product might not look the same as your product, but the steps are the same.
.
If you have trouble viewing the video, or to view the video in a different size, click here to play the video on YouTube.
  1. Lift the top cover of the printer.
  2. If the carriage does not move to the left automatically, press and hold the Resume () button until the carriage moves to the left. Wait for the carriage to stop moving.
  3. Lift the printhead latch.
    Figure : Lifting the printhead latch
  4. Lift the handle of a printhead and use it to pull the printhead out of its slot.
    Figure : Removing the printhead
  5. Before installing a printhead, shake the printhead up and down at least six times while the printhead is still in its package.
    Figure : Shaking the new printhead
  6. Remove the new printhead from its package and then remove its orange protective caps.
    Figure : Removing the protective caps
  7. Insert the printhead into its color-coded slot. The label on the printhead must match the label on the printhead latch. Press down firmly on the printhead until it snaps into place.
    Figure : Inserting the new printhead
  8. Pull the printhead latch all the way forward, and then press down to make sure that the latch engages. You might have to apply some pressure to engage the latch.
    Figure : Closing the printhead latch
  9. Close the top cover of the printer.
  10. Wait for the product to align the printheads and print one or more alignment pages.
  note:
Keep a print sample that shows the problem. If the ink cartridges, printhead, or printer is replaced under warranty, the support agent will request the print sample. If the printer is returned to HP, the print sample must be returned with the printer. Place the sample in the output tray when you package your printer for shipping.
Contacting HP for service in Asia Pacific.
If you completed all the preceding steps and your product still has an issue, you might need further assistance from HP. Go to Contact HP Support to review available service options.

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