1. Remove the duplex unit. (Duplex Unit)
  2. Pull out the 2nd paper tray [A].
  3. Remove the brackets [A] [B] on both sides.
  4. Remove the stopper, and then remove the paper feed guide plate [A].
  5. Press the tab to release the lock, and remove the paper feed guide plate [A].
  6. Remove the 2nd paper feed unit [A].