HP PSC 750 message says error, black ink cartridge installed incorrectly.

It means you have a faulty or incorrect cartridge installed on the right side position. It could also mean the contacts are dirty or misaligned. Remove the cartridge, clean with rubbing alcohol and reinstall.

This is not a unknown error particularly if you are using cartridges other than the HP brand. Other people will tell you it is fine to use off brand cartridges or refilled cartridges. For myself, I have never had luck doing that - on the other hand, I have never been disappointed using the more expensive cartridges recommended by the manufacturer across several brands including Epson, Canon, Compaq and HP.

Try cleaning the contacts and ink jets. You may have to replace the cartridge. If that is the case, I would return the faulty cartridge and get a store credit.

Just a few thoughts for you to consider. Thank you for using FixYa.com today.

I am having the same problem, I tried to replace the black cartridge and now it says it is the incorrect cartridge, so I put the old one back in and get the same error message.

Did you make sure you removed the plastic tape protection before installing the cartridge? Check to see if there is anything on the bottom of the unit. It could be the problem. Check the install instructions.

Need to replace all print head with error or nozzles block
and try for alignment
once the page is printed it needs to be scanned to save alignment
if still get same message need to check for scanner functionality

uninstall and reinstall printer and make sure u follow the promp and put the right cartridge in the right spot....black and color....2 different chambers

try to reinstall the cartridge also unplug printer for a while and plug it back in

here is a link to resolve the problem:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=buu02180&lc=en&dlc=en&cc=us&lang=en&rule=21439&product=60259

here is a link to the users manual:

http://h10032.www1.hp.com/ctg/Manual/bpu05029.pdf

Ink Cartridge Supplies for the HP PSC 750
Description
C6615A Black Ink Cartridge (HP #15)
C6578AN Color Ink Cartridge (HP #78)



That's right according to the above info
Try
Normal 0 Driver could be corrupt.
Disconnect the printer or at least be sure it is turned off. I'd do both and reinstall the CD software program that came with the printer. When the software program asks you to connect the printer to the USB port, do so and it should again work properly.
Hope this helps. Bud

According to the HP website, the correct cartridge for the HP PSC950 is HP15 or HP78. Comes in black only or tri-color.

I just turned on my hp psc 750 and an error message appeared. Incorrect black cartridge installed
I just used it yesterday, what is wrong???