- Remove the exposure glass. (Exposure Glass)
- Remove the scanner carriage front cover [A].
- Move the scanner carriage [A] to the indicated position as shown.
- Remove the resin cover [A] (Hook x3).
- Open the metal cover [A].
- Wipe clean the mirror with a dry cloth.
- When reattaching the metal cover [A], fasten the screws in the order of "1", "2", and "3".
- When attaching the resin cover, insert its tip under the metal frame.