error message on HP7720 states remove continuous ink system install original cartridges

[Taff62]

error message on HP7720 states remove continuous ink system install original cartridges

new cartridges and all correct but not working asking to replace which I have done twice at great expense

[VikramTheGreat]

Hi @Taff62,

Welcome to HP Support Community.
 

Thank you for posting your query, I will be glad to help you.

If your HP OfficeJet Pro 7720 is displaying an error related to the cartridges not being original or incompatible, try reinstalling the cartridges, cleaning their contacts, and restarting the printer.

Please remove the Cartridges from the Printer if possible, and try a Hard Reset, do keep us posted to help you better
 

** Hard reset :
1. Turn the printer on, if it is not already on.
2. Wait until the printer is idle and silent before you continue.
3. With the printer turned on, disconnect the power cord from the rear of the printer.
4. Unplug the power cord from the wall outlet.
5. Wait at least 60 seconds.
6. Plug the power cord back into the wall outlet.
NOTE: HP recommends connecting the printer power cord directly to the wall outlet.
7. Reconnect the power cord to the rear of the printer.
8. Turn on the printer, if it does not automatically turn on. The printer might go through a warm-up period. The printer lights might flash, and the carriage might move.
9. Wait until the warm-up period finishes and your printer is idle and silent before you proceed.

Cartridge Contact cleaning:
Try to clean the contacts quickly enough that the cartridges are not outside of the printer for more than 30 minutes. The ink can dry and clog the nozzles if the cartridges are outside of the printer for too long.

1, Remove the cartridges
2, Place the cartridges on a piece of paper with the nozzle plate facing up.
3, Unplug the printer power cord.
4, Lightly moisten the lint-free cleaning material with clean water.
5, Clean the cartridge contacts. Avoid touching the nozzles. Replace the cleaning material if it gets dirty.
6, Clean the carriage contacts. Use new cleaning material if the material used on the cartridge contacts is no longer clean.
7, Let the parts dry for five minutes before reinserting the cartridges.

Do try and let me know

I hope this helps.

Take care and have a good day.

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VikramTheGreat

HP Support