Question about HP Officejet Pro L7780 All-In-One InkJet Printer
Did you installed cartridges those are hp branded or not...?
Please checkout once again installation is correct or not...?
If so... You just follow the below instructions.
Performing a power reset.
1.Press the On button to turn off the HP All-in-One.
2.Unplug the power cord from the back of the HP All-in-One.
3.Unplug the power adapter from the wall outlet and wait for 30 seconds.
4.Plug the power adapter back into the wall outlet.
5.Plug the power cord to the back of the HP All-in-One.
6.Press the On button to turn on the HP All-in-One.
Try cleaning the cartridge contacts as one last attempt.
1. Make sure the HP All-in-One is turned on.
2. Lift the ink cartridge door.
3. Squeeze the bottom of the latch below the ink cartridge you want to clean, and then lift the latch.
NOTE: Do not remove multiple ink cartridges at the same time. Remove and clean each ink cartridge one at a time. Do not leave an ink cartridge outside the HP All-in-One for more than 30 minutes.
4. Remove the ink cartridge.
5. Inspect the ink cartridge contacts for ink and debris buildup.
6. Dip a clean foam rubber swab or lint-free cloth into distilled water, and squeeze any excess water from it.
NOTE: Hold the ink cartridge by its handle. Do not touch the copper-colored contacts with your hands or anything other than a foam rubber swab or lint-free cloth.
7. Clean only the copper-colored contacts.
8. Place the ink cartridge back into the empty slot and press down on the gray latch until it clicks into place.
9. Repeat if necessary for the other ink cartridges.
10. Gently close the ink cartridge door.
NOTE: The printer may take up to 15 seconds to clear the error and recognize the cartridge after closing the cover.
If problem persists, you need to send the unit for repair.
Let me know,if needed further assistance.
Hope i helped you.
Thanks for using ' Fixya ' and have a nice day!!
Posted on Jul 09, 2010
I am not sure if you have checked on the HP support website about this problem. I noticed that for some other HP printers, the recommedation from HP is to ignore the message if the printing is OK. But I cannot find your model listed specifcally when I checked the problem list
So if the printing is ok then you may have to ignore it, unless you might be using an incorrect cartridge. If printing is not ok then there may be a need to service the printer. Hope this helps.
Posted on Jul 09, 2010
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Posted on Jan 02, 2017
1. clean the ink cartridge contacts both in the printer and the cartridge with a lint free cloth or a cotton swab. and try inserting the ink cartridges again. if it wont work proceed to step 2.
2. unplug the power cord at the back of the printer
3. press and hold # and 3 keys at the same time and plug the power cord back in. Do not release the two keys. wait until the printer would say "partial nvram reset" or anything that says "reset". if this still would not resolve the problem
4. do the same process as 2 & 3 but instead of # and 3 try # and 6. instead of saying "partial nvram reset" it should say "semi-full nvram reset". and if it would not work better go to an onsite technician. but if your printer if brand new return it to the retailer and exchange it. but before you do that try calling HP technician they would instruct you to the things i have given you. Just tell them what you have had done and asked them to replace the ink cartridges. This are the informations the agent would ask you about the ink cartridge
part number and also the expiration date.
try to ask for a replacement first if it would not resolve it. then go to a technician. I could not assure you that a technician could fix it because i have troubleshoot this kind of problems and there are alot of printer parts that needs to be fixed. Usually i suggest my clients to buy a new printer instead
Posted on Mar 07, 2009
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