- ADF front cover (ADF Front Cover)
 - Original feed unit (Original Feed Unit)
 - The CIS is inside the ADF and can be removed through [A].
 - First, open raise the platen cover, and then release the white plate [B].
 - Raise the feeder cover.
 - Remove the cover [A], and then remove the separation roller [B].
 - Disconnect the front guide [
x2).
 - Remove:
[A] Front guide
[B] Guide (x1,
x2)
 - Remove the mylar bracket [A] (
x1).
 Disconnect the CIS (
x3).
- Release the tabs on both sides of connector 
and then lower them to release the connector for removal.
 
- Release the tabs on both sides of connector 
 - Raise the ADF slightly and open the white cover. This will prevent scratching the CIS glass when the unit is removed.
 - Slide the belt [A] off so that it does not interfere with removal and re-insertion of the CIS unit.
 - Remove the mylar plate [B] (
x2).
 - Slowly and carefully, pull the CIS out of the ADF.
 Clean the surface of the CIS lens with a lens cloth.
- Never clean the surface of the CIS with tissue or any type of solvent.