A SERVICE OF

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18. Ensure that the ten screw holes in the new system board are aligned with the mounting studs in the
chassis. Then, install the ten screws following the numerical sequence as shown to secure the new
system board in the chassis.
Figure121. Installing the screws to secure the system board
19. For the new system board, open the small handles and microprocessor retainer on each of the
microprocessor socket. See “Installing the second microprocessor” on page 107.
20. Remove the microprocessor(s) from the old system board and install them directly on the new system
board. See “Replacing the microprocessor” on page 111.
150 ThinkServer RD540 User Guide and Hardware Maintenance Manual