Konica Minolta bizhub C25 - Manual (Page 229)

Replacing Consumables 8-18
Replacing the Waste Toner Bottle
When the waste toner bottle becomes full, the message [WASTE TONER
FULL REPLACE BOTTLE] appears in the message window. The machine
stops and will not start again until the waste toner bottle is replaced.
1
Open the machine’s front cover.
2
Pull up the waste toner bottle to
unlock it.