When the toner is about to run out, the following message appears (If it is replaceable by the user.).
!
Detail
For details on the replacement procedure, refer to page x-40 of this manual.
When the waste toner box is full, the following message appears (If it is replaceable by the user).
!
Detail
For details on the replacement procedure, refer to page x-41 of this manual.
C550
x-37