For some HP DeskJet printers, you need to trick the printer into thinking that you have replaced the old ink cartridge with new ones instead of refilled ink cartridges that you filled yourself. If the printer keeps telling you to replace the ink cartridge, or if the ink level still shows empty, you can reset the printer so that it recognizes the refilled ink cartridge as a new one and reads the ink level as full, or close to it.
First, remove the ink cartridge from the printer carriage. Turn the cartridge over to view the copper contacts. The contacts should be the closest to you. If the contact is on the top of the cartridge, turn it around so that the contact is closest to you.
Then, put a small piece of clear tape over the seventh copper contact in the second row of contacts on the left. Put the ink cartridge back in the printer. Tell the printer to calibrate. After the alignment is complete, remove the ink cartridge.
Third, keep that the tape on the contacts. On the right side of the ink cartridge, in the second row from the right, place a small strip of tape above the sixth copper contact. Place the ink cartridge in the printer. Run an alignment page again.
After the alignment is complete, remove the ink cartridge. Remove the tape and make sure to remove the sticky residue when removing the tape. Place the ink cartridge in the printer. The printer is ready.
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