Minolta Di450 Service Manual page 90

Tension Lever 2
(3) Adjustment of the Scanner Motor Timing Belt
7. Loosen two screws by which the Tension Lever 2 is
mounted as shown on the left and then re-tighten
it.
4002D202AC
1. Remove the Rear Upper Cover.
2. Loosen three screws on the Scanner Motor mount-
ing bracket and then re-tighten them.
4002D203AB
D-71