My 2140 HP Fax will not print and I cleaned and replaced the cartridge?I just receive blank sheets yet it sounds as if it is printing.

Check the cartridge; defective or SEAL not propperly removed.

CHECK IF THERE IS ANY ALARM, CHECK CARTRIDGE, CHECK PAPER PICK UP ROLLER AND SEPARATION PAD, CLEAN OR REPLACE IT.

New cartridge wouldnt print but sounded like it was printing. You can check ink levels clean or align cartridge by pushing menu then tools. I cleaned contact points w qtip and alcohol. What seemed to work is putting alcohol on cartridge where ink is released and putting back into machine wet did this three times first time little dots of ink then a faint print and now it is printing must have been dried ink further then I could access.

This can be caused by a number of reasons however it is mostly caused by the toner cartridge missing a small spring on one end. Try replacing toner cartridge first.

If the fax is acting like it is printing (print head moving back and fourth) then it sounds like the ink cartridge is clogged. Remove the cartridge and clean with cotton swab and rubbing alcohol. If this helps a little or not at all replace the ink cartridge. If it still prints blank, the print head could be the problem (this is where the ink cartridge goes). At this point it would be cheaper to replace the fax.

The document should be face down when copying..

Hope this helps !!
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If it is a color printer, try printing just grayscale or black& white.  It is is already set to print just b/w, try printing in color.  Basically you may be out of ink.  Run the printer utility to clean the heads and see if anything changes.  A new set of cartridges should fix the problem, I believe.
Hope this helps...
~enov8

No, they need to be replaced.

Did you remove the plastic tape from the carts?

The ink may be dried out inside the cartridge. Try cleaning the brass parts of the cartridge with SOAPY WATER or replace the cartdridge.

If it's blank, is this on what you send/recieve?

Also if you print something like a status sheet, is it missing on those too? If so, your print head needs replacing.

If its on copies/sents you need to clean the scanner head.