Dell PowerEdge M520, Owner'S Manual

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System Board
Removing The System Board
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your
warranty. Read and follow the safety instructions that came with the product.
CAUTION: If you are using the Trusted Program Module (TPM) with an encryption key, you may be prompted to
create a recovery key during program or System Setup. Be sure to create and safely store this recovery key. If you
replace this system board, you must supply the recovery key when you restart your system or program before you
can access the encrypted data on your hard drives.
1. If installed, remove the front bezel.
2. Turn off the server modules using the operating system commands or the CMC.
3. Turn off the enclosure, including any attached peripherals, and disconnect the enclosure from the electrical outlet.
4. Remove the following:
a) hard drives
b) power supplies
c) server modules
5. If applicable, rotate the system feet inward and lay the system on its side on a flat stable surface, with the cover
release latch side on top.
6. Open the system.
7. Remove the following:
a) cooling shroud
b) cooling-fan assembly
c) backplane expander board
d) hard-drive backplane
e) PCIe cage
f) power distribution board
g) CMC cards
h) integrated storage controller card
8. Disconnect all cables from the system board.
9. Loosen the spring-loaded screw securing the system board handle to the chassis, and lift the handle.
10. Holding the system board handle on one side and the system board holder on the other side, lift the system board.
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