TX2550 M4 Upgrade and Maintenance Manual 341
Expansion cards and backup units
9.7.2.2 Removing the FBU with the holder
Figure 240: Disconnecting the FBU adapter cable from the FBU cable
Ê Lift up the green locking handle on the holder (see circle) while sliding the
holder in direction of the arrow as far as it will go.
I After that, the shoulder screw caps on the system air duct will rest in
the wide ends of the keyhole slots on the holder.
Ê Lift the holder from the system air duct.