Solution
1. Lift the scanning platform (A) until it is locked. (You will hear an audible [click].)
(A): Scanning platform
2. Open the toner cover (B), using the tab (A) which covers over on dent.
(A): Tab
(B): Toner cover
3. Close the toner cover using the tab.
4. Lower the scanning platform.
CAUTION
Be careful not to get your fingers caught.