Fujitsu M10-4 Service Manual page 345

Remove all the crossbar cables connected to the crossbar units requiring
2.
maintenance.
3. Loosen the two screws securing the crossbar unit.
Figure 15-2 Location of screws securing crossbar units
4. Open the eject levers (A in
and then pull the crossbar unit out of the CPU memory unit.
Figure 15-3) upward and downward, respectively,
Chapter 15 Maintaining the Crossbar Units 331