IBM 1800409-001A - Manual (Page 66)

3. Remove the pressure release and tension release pin sets (one
set on the left and one on the right) from the OPC belt cartridge
(fig. 2.25).
NOTE: The pressure release and tension release pins protect
the belt and its cleaning blade by relieving tension during
shipment. Save these pins to reinstall them if you need to ship
the printer later.
Fig. 2.25 Remove the Release Pins
Chapter 2
2 - 3 4 I n i t i a l P r i n t e r S e t u p