1. Remove the rear cover. (Rear Cover - Printer Model)
  2. Open the upper cover.

  3. Remove the screws (×4).

    • Do not remove the blue circled screws.

  4. Remove the wire bracket [A].

    • Close the upper cover until you can just about put your fingers in and remove the bracket, and slide the wire bracket [A] in the direction of the arrow.

  5. Remove the wire [A].

  6. Slide to the left and remove the upper cover.

    • There are notches [A] on the shaft. You can remove the upper cover by sliding it to the notch position.
    • Be careful not to lose the attached silencer (at the position circled in blue).