HP Officejet Pro 8000 - A809 - Manual (Page 65)

1 Printer Information: Shows device information (such as the product model number, serial
number, and firmware version number), the number of pages printed from the trays and
duplexer, the ink level information, and the printhead health status.
NOTE: Ink level warnings and indicators provide estimates for planning purposes only.
When you receive a low-ink warning message, consider having a replacement cartridge
available to avoid possible printing delays. You do not need to replace cartridges until
prompted to do so.
2 Test Pattern 1: If the lines are not straight and connected, align the printheads. For more
information, see
To align the printheads .
3 Test Pattern 2: If there are thin white lines across any of the colored blocks, clean the
printheads. For more information, see
To clean the printheads .
4 Test Pattern 3: If there are dark lines or white gaps where the arrows are pointing,
calibrate the linefeed. For more information, see
To calibrate the linefeed .
To align the printheads
Whenever you replace a printhead, the device 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 start the alignment process
manually.
•
Control panel: Press and hold the Power button, press the Resume button
three times, and release the Power button.
• Embedded Web server: Click the Settings tab, click Device Services in the left
pane, select Align Printer from the drop-down list in the Print Quality section,
and then click Run Diagnostic.
• HP Toolbox (Windows): Click the Services tab, and then click Align Printheads,
and follow the onscreen instructions.
• HP Printer Utility (Mac OS X): Click Align from the Information and Support
panel.
To clean the printheads
If printed characters are incomplete, or dots or lines are missing from printouts, ink
nozzles might be clogged, and you might need to clean the printheads.
NOTE: Cleaning uses ink, so clean the printheads only when necessary.
The cleaning process can take several minutes. Some noise might be generated in
the process.
Make sure paper is loaded before you begin to clean the printheads.
•
Control panel: Press and hold the Power button, press the Cancel button
two times, press the Resume button one time, and release the Power button.
• Embedded Web server: Click the Device Settings tab, click Device Services in
the left pane, select Clean Printheads from the drop-down list in the Print Quality
section, and then click Run Diagnostic.
Maintain the printheads 61