2MA/2MB
1-5-20
5. Check or replace the developing unit 
and refit all the removed parts.
NOTE:
*: Remove the cap before installing the new 
developing unit.
*: When reinstalling the developing unit, 
press it down until the lever of developing 
unit is engaged with the notch.
*: If it is difficult to engage the lever, press 
the unit down while rotating the gear to 
engage it.
Figure 1-5-29
Lever
Lever
Gear
Notch
Developing unit
New 
developing 
unit
Cap
Notch