raise the upper transport unit fully, then lower the transport to engage lock before you put your hands inside of the scanner.
2. pull the adf release lever toward you and lift up the adf sheet guide.
3. press down on the upper part of the guide plate with your fingers at the two positions shown and then rotate the plate toward you to remove it.
4. remove the pad assy from the guide plate by pushing the removal metal scroll down and then release hooks.
5. attach a new pad assy by engaging the hooks then pressing scroll into the slot of the guide plate.
confirm that the pad is firmly attached to the guide. make sure that the two tabs are engaged with the guide plate.
if not attached firmly, paper feed errors such as document jams may happen.
6. install the guide plate in the reverse order of the removal. by pressing the guide plate down and pushing the guide plate back then you can install it smoothly.
7. lower the adf upper sheet guide gently.
8. lift the upper transport unit fully to release the safety lock and then lower the transport unit carefully.
9. clear the pad counter.
please refer to the section “7.3 setup mode details”, “9. abrasion counter reset.”