Canon imageCLASS MF3010 VP Multifunction Monochrome Laser Printer - Manual (Page 208)

Before Replacing the Toner Cartridge
85RS-051
See " Attention (Replacing the Toner Cartridge)(P. 210) " in advance.
When the toner nearly runs out, follow the steps in the procedure below before replacing the toner cartridge.
The machine continues printing until the toner runs out completely.
1
Hold the operation panel.
2
Lift the scanning platform.
When you cannot lift the scanning platform
Make sure that the platen glass is completely closed.
Do not try to forcefully lift the scanning platform, as this may damage the machine.
The platen glass may not be completely closed when a thick document such as books is placed
inside. In such case, remove it from the platen glass.
3
Hold the grip on the left front side of the toner cover.
Maintenance
203