IBM 1800409-001A - Manual (Page 219)

4. Holding the cartridge by its edges, fold the green end-handle
back down and set the cartridge up on that end. The cartridge
will tilt slightly to one side.
5. Locate the three brass-colored latches, which hold the charger
unit in place. Then, swing each latch to the side to free the
charger unit (fig. 6.12).
6. Grasp the green handle on the end of the charger unit and lift
the unit out of the cartridge (fig. 6.12). Then, place the OPC
belt cartridge in its protective bag or a dark area to protect it
from light and set it aside until you are ready to reinstall it.
Fig. 6.12 Open Charger Unit Brass Latches
Chapter 6
C o n s u m a b l e s a n d P r e v e n t a t i v e M a i n t e n a n c e 6 - 2 9