Minolta CF910 Service Manual page 212

10. Remove the Sleeve/Magnet Roller and Developer Supply Roller.
Developer Supply Roller
Compression Spring
Fig. 7
Note 2:
Notice the black paint applied to the
C, M, and Bk Developing Units and
red paint applied to the Y Developing
Unit.
Note 2
Bearing
Paint
1154D159AA
D-51
Sleeve/Magnet Roller
Fig. 7 Compression Spring installed position
1144D160AA
Note:
The spring should fit in the chamber groove.
1154D158AA
Bearing