NEC 870 - SuperScript B/W Laser Printer Online User's Manual page 97

3. Gently lift out the Toner module
Warning! Do not touch the Fuser unit. It
may be extremely hot. The Fuser unit is
clearly labeled and located behind the
Toner module area.
4. Rock the Toner module gently, five or six
times, to redistribute the toner.
5. Holding onto the Toner module's handle,
lower it into the printer, making sure the four
pins (two on each side) fit into the guides and
match the markings inside the printer.
.
6. Gently but firmly close the Top cover of the
printer.
Chapter 8: Maintaining Your Printer
97