Fix HP Deskjet 3420 Won’t Print

 The HP Deskjet 3420 Troubleshooting issue might be due to ink cartridge problem, outdated firmware, or hardware malfunction.

  • Ensure that you load enough papers into the paper tray.
  • Do not load inappropriate papers or overload the tray.
  • Avoid using non-HP ink cartridges and use only genuine cartridges.
  • Make sure to get the latest version of the driver for the printer.
  • Check whether the printer firmware is up to date.
  • Replace the ink cartridges and clean the printheads regularly.
  • Ensure that the print settings are apt for your current print job.
  • Service the printer in an authorized service center.

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