Fujitsu M10-4 Service Manual page 299

Figure 14-4 Screws in the fan slot
14.4.2 Removing the PSU backplane unit
1.
Loosen the two screws securing the PSU backplane unit and then partially
pull out the PSU backplane unit.
Figure 14-5 Screws securing the PSU backplane unit
2.
Pull the PSU backplane unit out a little more. Then, remove the unit by holding
its handle.
Note - Place the removed PSU backplane unit on a grounded antistatic ESD mat.
Chapter 14 Maintaining the PSU Backplane Unit 275