Canon DR-2580C - Manual (Page 97)

Appendices 93
Chapter 3
Problem The hook is not correctly attached to the DR-2580C.
Solution Remove the DR-2580C scanner and then reinstall it correctly.
Problem The DR-2580C scanner was installed without removing the
transport locks.
Solution Remove the DR-2580C scanner and remove the transport locks.
For information about removing the flatbed scanner unit, see the manual that
comes with it.