Dell DL4000 System Board

5. Connect the control panel cable to the connectors on the system board (J_CP and J_FP_USB) and the hard-drive

expander card.

NOTE: Ensure that the control panel cable inside the system is routed along the chassis wall and secured

using the cable securing bracket.

6. Close the system.

7. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.

8. If applicable, install the front bezel.

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) memory modules

c) cooling fans

d) power supply(s)

e) all expansion-card risers

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(s) while removing the system board.

f) heat sink(s) and processors(s)

g) all expansion cards and the integrated storage controller card

h) network daughter card

i) internal dual SD module

j) internal USB key (if installed)

k) hot-swap hard drives

l) hard-drive backplane

CAUTION: To avoid damaging the mini SAS cable and connector, follow the correct procedure in step 5 when

removing the mini SAS cable from the system board.

5. Disconnect the mini SAS cable from the system board:

a) Push the mini SAS cable connector to slide it further into the connector (J_SASX8) on the system board.

b) Press down and hold the metal tab on the mini SAS cable connector.

c) Pull the mini SAS cable out of the connector on the system board.