Ricoh D146 Service Manual page 161

Booklet Finisher SR3170 (D688)/ Finisher SR3160 (D689)
4. Remove the items in the package (fixing screws, etc.).
5. Attach the shift tray [A] ( ×1).
6. SR3170 only: Attach the extension [B] to the booklet tray ( ×1) ,and attach the booklet tray
[A]
7. Attach the relay guide plate [A] ( ×2).
D146/D147/D148/D149/D150 2-90 SM