Ricoh D129 Service Manual page 63

7. Remove two screws [A] from the bottom of the ARDF.
8. Remove all tapes on the ARDF.
9. Place the platen sheet [A] on the exposure glass.
10. Align the rear left corner (of the platen sheet) with the corner [B] on the exposure glass.
11. Close the ARDF.
12. Open the ARDF and check that the platen sheet is correctly attached.
SM 2-31
ARDF Installation (D630)
D129/D130