Printhead for LQ-590 LQ590 LQ-2090 LQ2090 ^^ Please turn off the Printers power supplybefore install the printhead ^^ Move the old printer to the right side andtwist off the screws of bothsidesPull out the old printer softly ^^ Install the new printhead and notice the note alignmentRestore the printhead to correct position ^^ You'll Receive 1 pcs Printhead for LQ-590/LQ-2090