Pull out the drawer unit.
Push down the guide plate [A].
Wipe the 1st to 4th duplex feed rollers (drive) and the 2nd to 4th duplex feed rollers (idle) with a damp cloth.
[A]: 1st duplex feed roller (Drive)
[B]: 2nd duplex feed roller (Drive)
[C]: 3rd duplex feed roller (Drive)
[D]: 4th duplex feed roller (Drive)
[E]: 2nd duplex feed roller (Idle)
[F]: 3rd duplex feed roller (Idle)
[G]: 4th duplex feed roller (Idle)
Remove the fusing unit. (Removing the Fusing Unit)
Wipe the duplex feed roller 1st (idle) [A] with a damp cloth.