Clean the Print cartridges HP Deskjet F340 All-in-One Printer

Clean the Print cartridges when the self-test report shows streaking, white lines through any of the lines of color or when a color is muddy after installing a print cartridge for the first time. Do not clean print cartridges unnecessarily, as this wastes ink and shortens the life of the ink nozzles.

To clean the print cartridges from the HP Photosmart Software

• 1. Load letter, A4, or legal unused plain white paper into the input tray.
• 2. In the HP Solution Center, click Settings, point to Print Settings, and then click Printer Toolbox.
  Note You can also open the Printer Toolbox from the Print Properties dialog box. In the Print Properties dialog box, click the Services tab, and then click Service this device.
  The Printer Toolbox appears.
• 3. Click the Device Services tab.
• 4. Click Clean the Print Cartridges.
• 5. Follow the prompts until you are satisfied with the quality of the output, and then click Done.

If copy or print quality still seems poor after you clean the print cartridges, try cleaning the print cartridge contacts before replacing the affected print cartridge.

To clean the print cartridges from the HP Photosmart Mac Software

• 1. Load letter, A4, or legal unused plain white paper into the input tray.
• 2. In the HP Photosmart Studio task bar, click Devices.
  The HP Device Manager window appears.
• 3. Make sure the HP All-in-One is selected in the Devices pop-up menu.
• 4. From the Information and Settings pop-up menu, choose Maintain Printer.
  The Select Printer window appears.
• 5. If the Select Printer dialog box appears, choose the HP All-in-One, and then click Launch Utility.
  The HP Printer Utility window appears.
• 6. Click Clean in the Configuration Settings Panel.
• 7. Click Clean.
• 8. Follow the prompts until you are satisfied with the quality of the output, and then close the HP Printer Utility.

If copy or print quality still seems poor after you clean the print cartridges, try cleaning the print cartridge contacts before replacing the affected print cartridge.

Clean the print cartridge contacts
Clean the print cartridge contacts if you get repeated messages on your computer screen prompting you to check a print cartridge after you already have cleaned or aligned the print cartridges, or if the Check Print Cartridge light is blinking.
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
contacts.
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.
  Tip Coffee filters are lint-free and work well for cleaning print cartridges.
• Distilled, filtered, or bottled water (tap water might contain contaminants that can damage the print cartridges).
  Caution 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

• 1. Turn on the HP All-in-One and open the print cartridge door.
  The print carriage moves to the center of the HP All-in-One.
  2. Wait until the print carriage is idle and silent, and then unplug the power cord from the back of the HP All-in-One.
  3. Lightly press down on the print cartridge to release it, and then pull it toward you out of the slot.
  Note 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.
• 4. Inspect the print cartridge contacts for ink and debris buildup.
• 5. Dip a clean foam rubber swab or lint-free cloth into distilled water, and squeeze any excess water from it.
• 6. Hold the print cartridge by its sides.
• 7. Clean only the copper-colored contacts. Allow the print cartridges to dry for approximately ten minutes.
  

  1 Copper-colored contacts
  2 Ink nozzles (do not clean)

• 8. Slide the print cartridge back into the slot. Push the print cartridge forward until it clicks into place.
• 9. Repeat if necessary for the other print cartridge.
• 10. Gently close the print cartridge door and plug the power cord into the back of the
  HP All-in-One.