1. Remove the optional paper feed unit from the main machine.
  2. If the optional paper feed unit is installed on the caster table, remove it from the caster table.
  3. Remove the paper feed tray [A] of the optional paper feed unit by pulling it out.
  4. Turn over the optional paper feed unit [A], and then remove the board cover [B]. (hook×2)
  5. Release the harness of the mainboard [A] from the harness guides.
  6. Disconnect the five connectors from the main board [A].
  7. Turn over the optional paper feed unit again, and then remove the upper cover [A]. (hook×1)

  8. Remove the drive unit [A] from the upper cover [B].

    • When removing the drive unit [A], remove the coupling [B] from the shaft [C].