Owners Manual

Steps
1 Strip the insulation from the end of the green or yellow wire, exposing approximately 4.5 mm (0.175 inch) of copper wire.
2 Using a hand-crimping tool (Tyco Electronics, 58433-3 or equivalent), crimp the ring-tongue terminal (Jeeson Terminals Inc., R5-4SA
or equivalent) to the green and yellow wire (safety ground wire).
3 Connect the safety ground wire to the grounding post on the back of the system by using a #6-32 nut equipped with a locking
washer.
Assembling DC input power wires
Prerequisite
WARNING: For equipment using –(48–60) V DC power supply units (PSUs), a qualied electrician must perform all connections
to DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself. All electrical wiring
must comply with applicable local or national codes and practices. Damage due to servicing that is not authorized by Dell EMC is
not covered by your warranty. Read and follow all safety instructions that came with the product.
Steps
1 Strip the insulation from the ends of the DC power wires, exposing approximately 13 mm (0.5 inch) of copper wire.
WARNING: Reversing polarity when connecting DC power wires can permanently damage the power supply or the system.
2 Insert the copper ends into the mating connectors and tighten the captive screws at the top of the mating connector using a Phillips
#2 screwdriver.
WARNING: To protect the power supply from electrostatic discharge, the captive screws must be covered with the rubber
cap before inserting the mating connector into the power supply.
3 Rotate the rubber cap clockwise to x it over the captive screws.
4 Insert the mating connector into the power supply.
System board
A system board (also known as the motherboard) is the main printed circuit board in the system with dierent connectors used to connect
dierent components or peripherals of the system. A system board provides the electrical connections to the components in the system to
communicate.
NOTE
: After the system board is replaced, you must update the system with the latest available BIOS and iDRAC versions. For
more information, go to Dell.com/XCSeriesmanuals.
Removing the system board
Prerequisites
CAUTION
: If you are using the Trusted Platform 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.
CAUTION: Do not attempt to remove the TPM plug-in module from the system board. Once the TPM plug-in module is installed,
it is cryptographically bound to that specic system board. Any attempt to remove an installed TPM plug-in module breaks the
cryptographic binding, and it cannot be re-installed or installed on another system board.
1 Follow the safety guidelines listed in Safety instructions.
2 Follow the procedure listed in Before working inside your system.
3 Remove the following:
a Air shroud
b Cooling fan assembly
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Installing and removing system components