Ricoh DDP 184 User Manual page 194

4. Pull out the Toner Hopper Unit using the two handles.
5. Install the new color Toner Hopper Unit in the reverse order.
6. Pull down the Latch and remove the Toner Hopper Shutter.
7. Install the new color Developer Unit in the reverse order.
See page 6-48.
6-50 Care and Maintenance