Replacing The Power Distribution Board (Pdb) - Kontron CG2300 Installation And Maintenance Manual

5.2.18

Replacing the Power Distribution Board (PDB)

The power distribution board (PDB) routes power from the power supply module(s) to the rest of the server through an integral
wiring harness.
To replace the PDB, first remove the following components:
» Top cover
» Support cross bar and all components attached to it
» SAS HDD backplane board
» All cables from the PDB at the connections on the other end (The cables are soldered onto the PDB and the new board
has a new set of cables attached.)
» Baseboard SSI main power cable (from the 24-pin connector on the baseboard; bundle soldered on the PDB)
» CPU and DIMM power cables (one for each CPU, from the 8-pin connectors on the baseboard; soldered on
the PDB)
» Fan control board power cable (from the 12-pin connector on the fan control board, soldered on the PDB)
» HDD backplane board power cable (from the HSBP board, soldered on the PDB)
» Auxiliary I/O power dongle (from any auxiliary PCI adapters installed and routed out of the PCI air baffle,
soldered on the PDB)
» Baseboard SSI power control signal cable (from the baseboard, soldered on the PDB)
For instructions, see (A), (D), (H), (E1), (E5), and (E4) in Chapter 4.
Refer to Figure 12: Cable Routing" and Table 1: Cable Connections" for the location of the connectors where each cable is
disconnected.
CAUTION: Before replacing any of the boards on the CG2300 server, first take the server out of service, turn off all peripheral
devices connected to the server, turn off the server by pressing the power button, and unplug the power cord(s) from the system
and wall outlet.
When handling the power distribution board, observe the normal safety and ESD precautions. See Appendix A: Safety Information
for more information.
Removing the Old PDB
1. Slide the power supply module(s) out a few inches to disengage it from the PDB.
2. Loosen the two screws that secure the PDB bracket to the chassis and save them for re-installing the new PDB assembly.
(Figure 44, "A")
3. Gently pull the PDB and all its attached cables out of the chassis. ("B").
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Installation and Maintenance Guide
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