Ricoh A172 Service Manual page 102

[C]
[E]
[D]
[F]
[G]
24. Reinstall the following units or parts in the machine as follows.
1) Slide in the drum unit and secure it to the shaft with the knob screw.
2) Set the drum stay [A] in position and secure the drum unit (2 screws).
3) Remove the drum stay [A] and reinstall the quenching lamp, toner
collection tube and development units.
NOTE: When reinstalling the magenta/yellow development unit [B],
make sure that the bottom plate fits the rails as shown.
4) Set the drum stay by securing the 2 screws [C] then the knob [D].
5) Reinstall the charge corona unit [E] (1 screw, 1 connector), PCC [F] (1
screw), and the ID sensor board [G] (1 screw).
SM
[A]
[C]
[B]
3-13 A172/A199