New color and black cartridges. Put in color one first but when I tried putting black in the white guard underneath the cartridges wouldn't go down so I couldn't put the black one in or remove the color one.
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I have an HP DeskJet 1220C that has been working fine for two years
now. All of a sudden it can only print in pink and black. It is driving
me crazy. I have tried the following without any success:
1. Replaced the cartridges twice 2. Aligned and cleaned the cartridge from the computer 3. Soaked the cartridge head in hot water, and made sure that all three colors will bleed out of the head 4. Cleaned the cartridge contacts with an eraser 5. Cleaned the cartridge contacts on the printer with a brush
This is typical cartridge problem.Which cartridge changed?This printer can print with the only one cartridge inside it, whatever which.Try this: Open cover put out color cartridge then close cover.If blinking stops replace color cartridge.If blinking continues put out black cartridge and put in color.If blinking stops replace black cartridge, if not stop replace both cartridges. If this not help your printer has problem in carriage unit and need repair.
Please remove the cartridges from the printer. Take a dry lint free paper towel and gently wipe the contacts on the back of the cartridge (not the bottom from where ink is present). Wipe the contacts inside the printer (on cartridge carrier). Please snap the cartridges back into the cartridge carrier and please try to print a printer self test.
My HP Deskjet 6940 is not printing. The color (left) low ink light is dark and the black (right) low ink light is flashing. I replaced the black ink cartridge with a new one but the low ink light continues to flash. No tears/rips in the circuit strip and all the copper leads appear to be connected
The Deskjet 6940 will only show ink level for original HP cartrdgies. Refilled or reman cartridges will show as empty or unknown in the toolbox. This is not an issue with the driver, the cartrdige itself has information that it has been previously used and this is not resettable. You can continue to print with a cartrdige that has unknown ink levels, you will just not get low ink warnings.
Regards, Bob Headrick, Micosoft MVP Printing/Imaging
Pop out the cartridge and look inside the printer where the black cartridge goes. There may be punctures in the ribbon cable from the metal wire that rests against the catridge. I have lost 2 6940's to this problem.
Due to shiaty design, it is easy to accidentaly puncture the printed
circuit with the sharp end of the retention spring while inserting a
new cartridge. Use a flashlight too look at the white/copper
sheet the cartridge makes contact with and look for a puncture
(probably near the lower right side.)