Dell PowerEdge R905 Hardware Owner's Manual (PDF) - Page 135
Installing the System Board, Installing Memory Modules
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Installing the System Board 1 Transfer the processors and heat sinks to the new system board. See "Removing a Processor" on page 99 and "Installing a Processor" on page 101. 2 Remove the memory modules and transfer them to the same locations on the new board. See "Removing Memory Modules" on page 97 and "Installing Memory Modules" on page 95. 3 Transfer the riser board to the new system board. See "Removing the Riser Board" on page 81 and "Replacing the PEM or PEM Shell" on page 76. 4 Install the new system board: a Holding the system board by the heat sinks, lower the right side of the system board into the chassis. b Slowly lower the left side of the system board into the chassis. NOTE: Ensure that the power cables from the power distribution board do not impede the system board as you lower the system board into the chassis. c Slightly lift up the front of the system board and maneuver the system board to the bottom of the chassis until it lays completely flat. d Ensure that all retention hooks on the bottom of the chassis are inserted into the retention slots on the system board. See Figure 3-35. e Push the system board toward the back of the chassis until the blue retention pin snaps into place. 5 If applicable, transfer the internal USB key, SD card, and TOE/iSCSI key. 6 Install the RAID battery compartment: a Insert the two securing tabs on the battery compartment into the two securing slots on the side of the chassis. See Figure 3-34. b Press down the battery compartment to secure it. 7 Connect the cables in the order listed below (see Figure 6-1 and Figure 6-3 for the locations of the connectors on the system board and on the SAS backplane): • The three power distribution cables • SAS power cable SAS backplane power connector Installing System Components 135