Question about Apple HP DeskJet 840c InkJet Printer
I have the same printer and I've suffered this problem before,
I solved mine by replacing the ink cartridge
I used to clean the head using a smooth piece of cloth and hot water " real hot water"
that used to solve the proplem periodically and when I replaced the couple of cartridges the problem was solved totally.
If this did not work for you then try to replce the cartridge capint it selfe
if this did not work for you then try to replace the main board 'the mother board"
if this did not work for you then try to replace the whole printer.
if this did not work for you then try to replace the computer itself
if this did not work for you then try to replace the place you live in
if this did not work for you then try to replace the planet.
and good luck.
Posted on Nov 21, 2008
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Posted on Jan 02, 2017
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