Brother HL-3170CDW - Manual (Page 141)

Routine Maintenance
135
4
d
Hold the green handle of the belt unit and lift the belt unit up, and then pull it out.
IMPORTANT
To avoid print quality problems, DO NOT touch the shaded parts shown in the illustrations.
e
Remove the orange packing material and discard it.
NOTE
This step is only necessary when you are replacing the waste toner box for the first time, and is not
required for the replacement waste toner box. The orange packing pieces are installed at the factory to
protect your machine during shipment.