1. Operation panel (Operation Panel (Printer Models))
  2. Remove the key and display assembly [A] from the operation panel.

  3. Separate the operation panel [B] and its back cover [A].

    Before separating them, be sure to disengage all 3 hooks.

  4. OPU [A]

  5. NFC [A]


  6. After assembly, check that you can press all the keys smoothly without them catching.