Caution lite flashing over cartridge of hp deskjet 940c. error message says that there is not color ink cartridge in printer. There is and the interface says the tank is full. It won't print anything (even though I just want to print from black cartridge only, which is a default setting.) Help! Lori

HP 78 Tri-color Inkjet Print Cartridge (C6578DN)HP 78XL Tri-color Inkjet Print Cartridge (C6578AN)
HP 78+ Tri-color Inkjet Print Cartridge (CB277AN)

Good luck

For the HP 940c, there is only one light to indicate a possible low ink cartridge. The LED above the cartridge symbol (the only one without a button) will flash. (Note: this LED is the second from the left.) When you see the error code, open the printer's top cover. If the error is a low ink issue, the LED will stop blinking.

With the cover open, the cartridge carrier will move until the yellow arrow lines up with an icon on the printer itself. These five icons are in order from left to right (as you look at the cartridges) : tri-color ink cartridge problem, black ink cartridge problem, tri-color ink low, black ink low and cartridges OK. If both cartridges are low, replace the one indicated by the arrow. Then the cartridge carrier will move to indicate the other cartridge is low. (If only one has a problem, after you replace it, the carrier will move to the cartridge OK symbol.)

If HP offers the full-feature software for your OS, then install the software. Use the HP Deskjet Toolbox to get exactly which cartridge needs to be replaced without needing to be ready to replace both (or to monitor your ink level (approximate ink level)).

The manual for the Deskjet 940c is available as a PDF from HP: http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentType=SupportManual&lang=en&cc=us&docIndexId=64179&taskId=125&prodTypeId=18972&prodSeriesId=35985 .

I hope this helps.

Cindy Wells

You will need to replace the empty color cartridge to get the flashing to stop.

However you should still be able to print in BW. Check that the applications you are running are set to
BW and not color in the configuration menu. That should permit you to print in BW only.

Try using the HP Print Diagnostic Utility in Windows - HP Customer Care (United States - English).

If you need more help come back.Post / thumbs / testimonial are welcome!

the moving ink frame is probably pointing to a symbol such as replace color ink( three dots on ink cartridge picture). Replace color ink. You are probably printing your black and white documents with colored ink--always select black or greyscale.

Hi,
If the ink level is low in a print cartridge, the Print Cartridge Status light stops flashing when the printer’s top cover is opened. When you open the panel the ink cartridges slide to the center , as far as checking the ink level find and right click on the printer icon, click properties, and find ink cartridges and ink levels.
Thanks
Shereena.

Some HP ink refills have the exact same product number but the electrical contact tips on the back of the cartridge are not the same configuration, resulting in red ink only being printed. One example is the DeskJet color ink cartridge C1823D having multiple configurations.Find a printer just like yours that's working properly and compare the contact tips if possible. HP tech help is a joke on this one. Good luck!

This mean one or both print cartridges not recognized.Try to clean the contacts on the carriage unit using piece of cotton and some alcohol.Make sure both print cartridges are in printer.If you replace one of the cartridges, try replace the other one.

try aligning the printer from the hp solution center again..
hopefully it will work

try cleaning the contacts with a wet towel
from both cartridge (black and color) and in the printer
where the cartridges get in (metal pins)