My Hp 2820 machine is showing that the i need to replace new the black cartridge but when i chnged when cartridge the same massage is showing

Unplug machine for awhile then plugback. It may reboot..remember its a computer n needs dailyrest. Also any connecting plugs on machine shud b done the same....debris gits on the pins causin bad contact. Make sure fan is workn rite

Did you purchase a new cartridge or refill? These supplies have a non-resetable chip on them that must be replaced when a cartridge is refilled. If it is an new HP original cartridge, contact HP and have them replace it. If it is a refill, contact whoever you bought it from and get them to replace it.

well you can easily replace the cartridge ...all you need to follow is the steps mentioned in the following link:

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=125&prodSeriesId=445194&prodTypeId=18972&objectID=c00364321

dont worry ...you can do it..:-)

This is a classic failure mode of HP Printers. I've tossed out two of them for the same reason, after fooling around for hours and wasting a couple of cartridges. My solution? Buy a different printer next time -- Canon, Brother, etc.

what is showing toner life end ? [email protected]

Yes, you will need to replace the drum unit as well. be sure to shop around so you can get the best price because some people mark up the price for that part. You can check the status of your supplies from the printer itself by pushing the "menu" button the printer and scrolling through until you see something about supplies status then press the check mark button.

Do you have a dial tone?

You must replace both ink cartidges to align the printer carts.

I recently spent six hours troubleshooting the exact same problem (swapping all kinds of parts and motors) except with mine only the yellow would print and one time the print came out correctly. If you know how to take the machine apart, this has to do with the carousel drive motor positioning solenoid. The solenoid has a pad that is a silencer for the solenoid are the starts to deteriorate and "sticks". You could fix this (with electrical tape over the pad) or replace the solenoid. Either way, you need to get to the part.

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