Question about HP Office Equipment & Supplies
Cartriges have a shelf life. It's printing in blue either because it has dried up or is out. Different cartriges have different timelines but if you haven't been using the printer often, it could have dried up or is simply out of ink. I would suggest first to try cleaning the head of the cartrige where the ink comes out with alcohol and a Q-tip and then if that doesn't work, buying a new black cartrige.
Posted on Nov 06, 2007
SOURCE: orange flashing light on printer
No the ink is not to low you could try removing the ink cartridges and using a soft cloth wipe clean the little gold contacts on the cartridge and also the printer. Is the ink cartridge a original one if not even though the HP software states that there is 20% in there the likely thing is that the cartridge is empty replace and this should be OK.
I hope the first suggestion works for you as will not cost any money.
Posted on Jan 12, 2008
Try changing the color cartridge. Also it is a good idea to clean the electrical contacts if it looks dirty.Use slightly damp(use water only) q-tips .
Hope this helps
Posted on Mar 28, 2008
just unplug the power cable and usb cable from the back side of the printer and let it be for an hour it will help
Posted on Jul 19, 2008
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
Posted on Oct 22, 2008
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