Dell PowerVault NX400, 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. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. If installed, remove the front bezel.
3. Open the system.
4. Remove the following:
a) cooling shroud
b) PDB shroud
WARNING: The memory modules are hot to the touch for some time after the system has been powered
down. Allow time for the memory modules to cool before handling them. Handle the memory modules by
the card edges and avoid touching the components.
c) memory modules
d) cooling fan cables
e) all expansion cards and expansion-card risers
f) integrated storage controller card
WARNING: The heat sink is hot to touch for some time after the system has been powered down. Ensure
that you do not touch the heat sink while removing the system board.
g) heat sink and processor
h) internal dual SD module
NOTE: It is recommended that you remove the power distribution board before removing the system board
from the chassis.
5. Disconnect all other cables from the system board.
CAUTION: Take care not to damage the system identification button while removing the system board from
the chassis.
6. Remove the nine screws on the system board and slide the system board toward the front of the system.
7. Hold the system board by its edges and lift the system board out of the chassis.
CAUTION: Do not lift the system board assembly by grasping a memory module, processor, or other
components.
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