HP Designjet T790 and T1300 ePrinter Series - The front-panel display recommends reseating or replacing a printhead

From the front panel, turn the power off then on.

Check the front-panel display message, if it shows the ready message, the printer is ready to print. If the problem remains continue with the next step.

Remove the printhead, see Remove a printheadRemove a printhead.

Clean the electrical connections on the backside of the printhead with a lint free cloth. You can carefully use a mild rubbing alcohol if moisture is needed to remove residue. Do not use water.

  caution:

This is a delicate process and may damage the printhead. Do not touch the nozzles on the bottom side of the printhead, especially not with any alcohol.

Reinsert the printhead, see Insert a printheadInsert a printhead.

Check the front-panel display message. If the problem remains, try a new printhead.