Ricoh C410DN - Aficio SP Color Laser Printer Hardware Manual page 122

Replacing Consumables and Maintenance Kit
C
Turn the two green levers counterclockwise ( ), and then slowly open the
inner cover ( ).
The photo conductor units are installed as shown. From the right, the units
are attached in the order of black (K), magenta (M), cyan (C), and yellow (Y).
6
D
Remove the photo conductor unit you want to replace. Turn the green lever
counterclockwise to unlock the unit. (The black photo conductor unit is
used in this example.)
110
AQC013S
AET137S
AET138S