Fujitsu scansnap ix500 Operator's Manual page 454

4.
Install a new pick roller on the ScanSnap.
Insert the left end of the shaft into the slot, and lower the other end gradually.
5.
Rotate the bushing to lock the shaft.
ATTENTION
Confirm that the pick roller is installed properly. Otherwise, paper jams or other feeding errors
may occur.
6.
Close the sheet guide.
Make sure that both ends of the sheet guide are locked firmly.
Pick roller
Bushing
454
Replacing the Roller Set