Canon L90 - Manual (Page 168)

8-5
Troubleshooting
2
Open the toner cover by the notch
(A).
Always open the toner cover first before
removing jammed paper inside the machine.
3
Remove the toner cartridge.
To avoid exposing the toner cartridge to
light, place it in its protective bag or wrap it
in a thick cloth.
Do not open the drum protective shutter
(A).
Always hold the toner cartridge by its handle.
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