Ricoh D146 Service Manual page 132

5. Attach the 2 clamps to the bracket provided.
6. Attach the bracket [A] to the frame ( ×2)
7. Retaining bracket [A] ( ×1)
8. Pull out the connector [A] of the scanner cable.
SM 2-61 D146/D147/D148/D149/D150
SPDF DF3080