Fujitsu M10-4 Service Manual page 328

Figure 13-4 Screws in the fan slot
2. Loosen the two screws securing the PSU backplane unit and then partially
pull out the PSU backplane unit.
Figure 13-5 Screws securing the PSU backplane unit
3. 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.
314 Fujitsu M10-4/Fujitsu M10-4S/SPARC M10-4/SPARC M10-4S Service Manual ･ June 2023