Clean the print cartridge contacts
Clean the print cartridge contacts only if you get repeated messages on the color
graphics display prompting you to check a print cartridge after you already have cleaned
or aligned the print cartridges.
Before cleaning the print cartridge contacts, remove the print cartridge and verify that
nothing is covering the print cartridge contacts, then reinstall the print cartridge. If you
continue to get messages to check the print cartridges, clean the print cartridge
Make sure you have the following materials available:
Dry foam rubber swabs, lint-free cloth, or any soft material that will not come apart
or leave fibers.
Distilled, filtered, or bottled water (tap water might contain contaminants that can
damage the print cartridges).
Do not use platen cleaners or alcohol to clean the print cartridge
contacts. These can damage the print cartridge or the HP all-in-one.
To clean the print cartridge contacts
Turn on the HP all-in-one and open the print-carriage access door.
The print carriage is on the far right side of the HP all-in-one.
Wait until the print carriage is idle and silent, and then unplug the power cord from
the back of the HP all-in-one.
When you unplug the power cord, the date and time are erased. You will
need to reset the date and time later, when you plug the power cord back
in. For more information, see
Set the date and time
. Any faxes stored in
memory are also erased.
Lift one of the latches to the open position, and then remove the print cartridge.
Do not remove both print cartridges at the same time. Remove and clean
each print cartridge one at a time. Do not leave a print cartridge outside the
HP all-in-one for more than 30 minutes.
Inspect the print cartridge contacts for ink and debris buildup.
Dip a clean foam rubber swab or lint-free cloth into distilled water, and squeeze any
excess water from it.
Hold the print cartridge by its sides.
Clean only the copper-colored contacts. For information on cleaning the ink nozzle
Clean the area around the ink nozzles
HP Officejet 7300/7400 series all-in-one
1 Copper-colored contacts
2 Ink nozzles (do not clean)
Place the print cartridge back into the print carriage slot and close the latch.
Repeat if necessary for the other print cartridge.
10 Gently close the print-carriage access door and plug the power cord into the back
of the HP all-in-one.