Kontron NSN2U IP Network Server - Manual (Page 65)

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Removing the Old Power Distribution Board
1. Power down the server and unplug all peripheral devices and the power cable(s).
2. Remove both of the chassis covers. For instructions, see “Removing the Chassis
Covers” in Section 3.2.
3. Remove the riser card assembly. For instructions, see “Removing the Riser Card
Assembly” in Section 3.2.
4. Remove the 60mm PCI fan assembly. For instructions, see ”Replacing 60mm PCI Fans”
in Section 5.2.
5. Remove the processor air duct. For instructions, see “Removing the Processor Air
Duct” in Section 3.2.
6. Remove the black plastic riser card assembly/bridge board guide bracket by
loosening the two screws that secure it to the chassis base. See Figure 48 for the
location of this bracket and the screws that attach it.
7.
Slide the power supply module(s) out a few inches to disengage it from the PDB.
8. Remove the SAS/SATA control module or SAS/SATA hardware RAID module, if installed.
See Section 4.3, “Installing a SAS/SATA Control Module” or Section 4.4, “
Installing a Hardware RAID Module” for help with how these modules are fastened.
NOTE: Other components that are removed to fully install a SAS/SATA module do not
need to be touched when replacing the PDB; only the sheet metal cover, the module
itself, and the flex cable connection on the SAS/SATA module side.
9. Remove the SATA optical drive data cable from the retention feature on the black
plastic cover.
10. Remove the black plastic cover that shields the PDB.
There is one screw that fastens this cover below where the SAS/SATA modules are
installed. (Figure 53, “A”)
11. Unplug the HDD backplane power cable from the PDB. (“B”)
12. Loosen the two screws that secure the PDB to the chassis and save them for re-
installing the new board. (“C”)
13. Gently pull the five edge connectors away from the T5520UR server board to free the
PDB from the chassis. (“D”)