Ricoh D009 Service Manual page 79

Auto Reverse Document Feeder (B802)
12. Open the ARDF cover [8].
13. Open the feed-in guide plate [9] and feed-out guide plate [10].
14. Install the stamp [11] into the ARDF.
15. Close two guide plates [10] [9].
16. Close the ARDF cover [8].
SM 2-33 D009/D011/D012/D013/D091/D092