HP Color LaserJet 9500 Administrator's Manual page 24

3. Turn the large green knob until you see the blue dot (this indicates that the stapler is fully open).
4. Turn the small green knob at the top of the stapler unit clockwise until the staple cartridge moves
to the left of the stapler unit.
CAUTION:
staple cartridge. If you try to remove the staple cartridge before the blue dot appears in the window,
you could damage the device.
5. On the empty staple cartridge, squeeze the tabs together and pull the empty cartridge out.
6. Insert the new staple cartridge so that it locks into place.
18 Chapter 2 Finisher tasks
The blue dot must appear in the window of the stapler unit before you remove the
ENWW