1. remove documents from the stacker. pull up on the lever on the right front of the upper transport and then raise it.
raise the upper transport unit fully, then lower the transport to engage lockbefore you put your hands inside of the scanner.

2. while pulling the adf lever toward you, lift up the adf upper sheet guide.

3. lift up the pick roller unit a little. slide the pick roller unit to the left to disengage the clutch ring from the shaft.

4. install a new pick roller unit in the reverse order of its removal.
when attaching the pick roller unit, hold the unit as shown. engage the drive ring onto the drive shaft. move left and align the clutch ring with the shaft and move right to engage.

5. lower the adf upper sheet guide carefully.
6. lift the upper transport unit fully to release the safety lock and then lower the transport unit carefully.
7. clear the pick roller counter.
please refer to the section “7.3 setup mode details”, “9. abrasion counter reset.”