HP Officejet Pro 8500A - Manual (Page 106)

Diagnostic page are not straight and connected, you can start the alignment process
manually. For more information, see Understand the Self Test Diagnostic Page.
NOTE: Before aligning the printheads, make sure you load plain paper. For more
information, see Load media.
• Control panel: Touch right arrow , touch Setup, touch Tools, and then select
Align Printer.
• 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 Software (Windows): Open the HP software that was included with the
printer. Click Printer Actions, click Maintenance Tasks, and then click Align
Printheads.
• HP Utility (Mac OS X): Click the HP Utility icon in the Dock, and then click Align.
To calibrate the linefeed
If Test Pattern 3 on the Print Quality Diagnostic page shows white gaps or dark lines,
you need to calibrate the linefeed. For more information, see Understand the Self Test
Diagnostic Page.
• Control panel: Touch right arrow , touch Tools, and then select Calibrate
Linefeed.
• Embedded Web server: Click the Settings tab, click Device Services in the left
pane, select Calibrate Linefeed from the drop-down list in the Print Quality
section, and then click Run Diagnostic.
• HP Software (Windows): Open the HP software that was included with the
printer. Click the Device Services tab, and then click Linefeed Calibration and
follow the onscreen instructions.
• HP Utility (Mac OS X): Click the HP Utility icon in the Dock, and then click
Calibrate Linefeed.
To clean the printheads
To determine whether the printheads need to be cleaned, print a Print Quality
Diagnostic page. For more information, see Understand the Self Test Diagnostic Page.
NOTE: Cleaning uses ink, so clean the printheads only when necessary.
The cleaning process takes a few minutes. Some noise might be generated in the
process.
Before cleaning the printheads, make sure you load paper. For more information,
see Load media.
• Control panel: PressSetup, select Tools, and then select Clean Printhead.
• 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.
Chapter 9
102 Solve a problem