Ricoh FT7770 Service Manual page 182

Prepare the development unit as follows:
23.
a) Remove the development unit cover [A] (1 screw).
b) Remove the development unit [B] by removing the development unit
mounting screw [C] and place the unit on a sheet of paper.
c) Remove the developer inlet cover [D].
d) Pour two kilograms of developer into the development unit. While
pouring in the developer, turn the paddle roller knob [E] clockwise
to evenly distribute the developer.
Reinstall the developer inlet cover and the development unit.
e)
Confirm that the development unit is seated on the guide rails properly Also,
Note:
confirm that the development unit is set correctly. If not, pull the unit out
slightly, turn the paddle roller knob, and push the unit back in.
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30 April, '89