HP Photosmart C4390 User Guide - Page 153
Solution, Contact HP, Cause, touch the ink nozzles or the copper-colored contacts.
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Chapter 13 Solution: If you have colored paper loaded in the input tray when you align the print cartridges, the alignment fails. Load unused plain white letter or A4 paper into the input tray, and then try the alignment again. If the alignment fails again, you might have a defective sensor or print cartridge. To find support and warranty information, go to the HP Web site at www.hp.com/ support. If prompted, choose your country/region, and then click Contact HP for information on calling for technical support. Cause: Protective tape is covering the print cartridges. Solution: Check each print cartridge. The tape might have been removed from the copper-colored contacts, but still might cover the ink nozzles. If the tape is still covering the ink nozzles, carefully remove the tape from the print cartridges. Do not touch the ink nozzles or the copper-colored contacts. Troubleshooting 1 Copper-colored contacts 2 Plastic tape with pink pull tab (must be removed before installing) 3 Ink nozzles under tape Reinsert the print cartridges and verify that they are fully inserted and locked in place. Cause: The contacts on the print cartridge are not touching the contacts in the print carriage. Solution: Remove and then reinsert the print cartridges. Verify that they are fully inserted and locked in place. Cause: The print cartridge or sensor is defective. 152 Troubleshooting