Question about HP LaserJet 2420 Printer
Sounds like you have installed a rebuilt/remanufactured cartridge that is missing the chip on the nose of the cartridge. Check the front of the cartridge for a small green peice that looks like a computer board. I am assuminy the memory error your getting is a "10.10" or starts with a 10.
Hopr that helps you
Posted on Feb 19, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Memory chip at TD sensor: Communication error
Retry of memory chip communication fails three times after the
machine has detected the memory chip communication error.
?? Damaged memory chip data
?? Disconnected inter face
?? No memory chip on the development unit
Replace the PCU.
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