TA Triumph-Adler P-C3570DN - Manual (Page 211)

5-6 Maintenance
Replacing the Waste Toner Box
Replace the waste toner box when the Check waste toner box.
Message is displayed. A new waste toner box is included with the toner
kit. The waste toner box needs to be replaced before the printer will
operate.
1
Open the left cover.
2
While holding the waste toner box, press the lock lever and then
gently remove the waste toner box.
3
Close the cap to the old waste toner box after removing the box from
the printer.
4
To prevent toner from spilling, put the old waste toner box in the
plastic bag (contained in the toner kit) and discard it later according
to the local code or regulations for waste disposal.
Note Remove the waste toner box as gently as possible so
as not to scatter the toner inside. Do not let the opening of the
waste toner box face downward.
Left Cover
Lock Lever
Old Waste
Toner Box
Cap
Plastic Bag