Dell C2660dn User Manual page 295

10 Make sure that the arrow marks on the transfer belt unit and the printer face each other, and then insert the unit
into the printer until it clicks.
11 Close the top cover.
12 Reinsert the removed waste toner box.
CAUTION:
If the waste toner box does not fit into place properly, make sure that the transfer belt unit is fully inserted.
293
Maintaining Your Printer