How to replace setup cartridges in hp officejet pro 8720 with new cartridges. I only need to replace the black cartridge at this time.

JDTec

• 4338 Answers
• Posted on Apr 23, 2009

SOURCE: Won't accept non-HP cartridge

You ask "Is this a common problem with non-HP cartridges? " It is a possiblity.
Where did you purchase the cartridges from?
This error might be caused by defective printhead or sensors

Are you removing the 2 protective caps from the cartridges?

Read this HP page:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01451117&lc=en&dlc=en&cc=us&lang=en&rule=17507&product=3203059

Click on this link or copy and paste the complete link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe


I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

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SOURCE: Problem in cartridge of HP Officejet Pro L7380 All-in-One Printer

Every cartridge needs to have ink in it to print. Even if you only want to print black and white and one of your colors is empty. A dirty little industry secret is that when you print black....it also makes the colors print too...so you get to buy even more ink than you need to!

SOURCE: Printer will not recognize the new cartridge installed.

Solution
Follow these steps in the order presented to resolve the issue.
NOTE: If error messages also display on the computer, clear the error messages after each of the following steps. You might have to delete pending print jobs from the print queue on the computer to clear the error messages.

Step one: Perform a power reset
Follow these steps to reset the product. Make sure you connect the product directly to a wall outlet and not a surge protector or power strip.

Press the Power button ( ) to turn off the product.
NOTE: The product might not turn off after pressing the Power button. Continue to the next step regardless.
Disconnect the power cord from the rear of the product.
Unplug the power cord from the electrical outlet.
Wait 30 seconds.
Replug the power cord into the electrical outlet.
Reconnect the power cord to the rear of the product.
Press the Power button ( ) to turn on the product.
If these steps resolved the issue , there is no need to continue troubleshooting.
If the issue persists , see the next step.
Step two: Clean the electrical contacts on the printhead and inside the product
The ink nozzles on the printheads might clog if you expose them to air for more than a few minutes. The ink nozzles also might clog if you do not use the product for long periods of time. Follow these steps to clean the electrical contacts on the printheads.
CAUTION: Follow these steps carefully to avoid damaging the sensitive electrical components.
Make sure that the product is turned on.
Open the top cover of the product.
Press and hold the OK button for five seconds. The carriage moves to the left side of the product. Release the OK button.
Wait until the carriage is idle and silent.
Unplug the product power cord from the electrical outlet.
NOTE: Do not turn the product off by pressing the Power button ( ). This causes the carriage to move out of reach.
Lift the printhead latch.


Lift the handle on the printhead that the error message indicates is missing or damaged, and then pull the printhead out of its slot.

Use a dry, soft, lint-free cloth to remove any ink from the electrical contacts on the printhead.
CAUTION: Wipe only the electrical contacts. Wiping the ink nozzles, located on the underside of the printhead, can damage the printhead.Do not touch the nozzles. Doing so permanently damages the ink nozzles, and the ink stains clothing.
Figure 3: Electrical contacts and ink nozzles

1 - Electrical contacts
2 - Ink nozzles
Wipe the electrical contacts with the swab until no ink residue remains.
Wipe the electrical contacts with a fresh cloth to dry them and remove lint.
After the electrical contacts on the printhead are clean and dry, place the printhead on a sheet of paper or a paper towel. Make sure that the ink nozzles face up and do not touch the paper.

1. Use a fresh, dry, soft, lint-free cloth to clean the electrical contacts inside the product. Figure 4: Clean the electrical contacts inside the product
   
2. Allow at least five minutes for the contacts to dry. Check the contacts for lint or debris, and then dry or clean the contacts again if needed.
3. Plug the product power cord into the electrical outlet.
4. Press the Power button ) to turn on the product. 'Printhead missing or damaged, replace the printhead' displays on the control panel.
5. Insert the printhead into its color-coded slot. Press down firmly on the printhead to make sure the electrical contacts touch.
6. Pull the printhead latch all the way forward, and then press down to engage the latch. If the error message indicates that both printheads are missing or damaged, repeat the steps in this procedure to clean the other printhead.
7. Close the top cover of the product. The product restarts and then prints an alignment page.

SOURCE: HP officejet pro 8500 ink cartridge problem

Changing a printer cartridge is not complex but improper handling of the parts may damage the printer and the cartridge. If the user notices that while printing the ink comes out dry or faded, it may be time to change the ink or the toner. The user will know if it is time to change the toner because instead of a sharp image, one will get a faded image. It is time to change the ink cartridge when the printing comes out spotty or colors are used to replace others —for instance, blue for black or yellow for red. Remember, faded images signal the need to change the toner; spotty printing signals the need to change the ink cartridge get more help for change cartridge .
Hope this helps you.

SOURCE: Says that I need ink even though I just replaced it

Replace all the ink cartridges??????? If this is HP's idea of how to sell more ink my printer will be floating down the Ohio River very shortly.