HP Photosmart A310 Compact Photo Printer - Manual (Page 34)

4. If the print cartridge is new, the printer prints an
alignment page to confirm that the alignment was
successful. This may take a few minutes.
The check marks verify that the print cartridge is
installed correctly and functioning properly.
If an "x" is displayed to the left of any of the bars,
align the print cartridge again.
Clean and maintain the printer
Keep the printer and print cartridge clean and well
maintained using the simple procedures in this section.
Clean the outside of the printer
To clean the outside of the printer
1. Turn off the printer, and then disconnect the power
cord from the back of the printer.
30 HP Photosmart A310 series