Ricoh FT6645 Manual page 243

OPTICS
[A]
[C]
9. Remove the lens unit cover [A] (2 screws).
10. Unhook the tension spring [B].
11. Remove the lens shield plate [C].
NOTE: When installing the lens shield plate, set the rear part [D] of the
lens shield plate between the guides [E] as shown. Then set the
grooves on the guide pins [F] in the rail [G].
After reinstalling the tension spring, confirm that movement of the
lens shield plate is smooth.
[D]
5-18
[B]
[E]
23 April 1993
[F]
[G]