1. Open the box of Epson 1390 printer and take out the printer.
2. Remove all adhesive tapes and packaging materials outside the printer to ensure that the surface of the printer is clean.
3. Open the fixing screw on the back of the printer, and install the cardboard to the designated position on the back of the printer.
4. Ensure that the cardboard is firmly installed and not loose.
5. Tighten the fixing screws on the back of the printer to ensure that the platen is fixed in the correct position.
6. Connect the power cord of the printer and start the test to ensure that the printer works normally.