Canon imageCLASS MF264dw II Multifunction Monochrome Laser Printer - Manual (Page 532)

Do not shake or tilt the toner cartridge. Also, make sure to avoid applying shocks to the toner cartridge, such
as by hitting it against something. Doing so may cause the toner left in the toner cartridge to leak.
5
Gently remove the drum cartridge.
Do not shake or tilt the drum cartridge. Also, make sure to avoid applying shocks to the drum cartridge, such
as by hitting it against something. Doing so may cause the toner left in the drum cartridge to leak.
6
Wipe away toner powder or paper dust from the inside.
Use a lint-free clean, soft, dry cloth.
7
Insert the drum cartridge.
8
Insert the toner cartridge.
Maintenance
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