1. Remove the rear middle cover. (Rear Middle Cover)

  2. Remove the controller box cover [A].

  3. Remove the controller panel plate [A].

  4. Remove the controller board [A].

    • There are two types of controller boards, one for Pro C5210S/MP C8003 SP and one for Pro C5200S/MP C6503 SP. Because there are different part numbers for these two controller boards, when replacing, check the parts catalog to make sure that you install the correct type. If you install the wrong board, the machine will not work.