Fix HP Deskjet 3420 Not Printing
The printer displays an error code along with a message stating “depleted cartridges must be replaced to resume printing.” Replace the black ink cartridge if it runs low on ink. Do not use non-HP ink cartridge for your printer. Always use genuine HP ink cartridge that is compatible with the 123.hp.com/dj3420 printer. Ensure that the ink cartridge is inserted into the designated ink slot. Review the print settings under the current printer driver. Make sure to clean the ink nozzles regularly.