1. Open the front cover.
    IM 550F/600F/600SRF: Push the button [A] and open the front cover [B].

    P 800/801: Open the upper cover [A], and then open the front cover [B].
  2. Unlock the toner cartridge by pulling the lock lever [A] towards the unlock position, and then remove the toner cartridge [B].
  3. Pull out the PCDU [A].
  4. Remove the charge roller [A] from the PCDU [B] by pressing the lock lever [C].