Make sure the power supply/interface cables are disconnected before proceeding!

Open the print head/ribbon cartridge cover.

Remove the two Phillips screws securing the two grounding brackets which hold the cutter unit in place.

Set the metal brackets aside.

Do not pull on them forcibly – you risk tearing the grounding wires.

Remove the cutter, being careful not to tear/pinch the cable coming from it.

Disconnect the cable connecting the cutter to the printer.