Replacing The Liquid Cooling Heat Sink Assembly - Dell XPS 730 Service Manual

Replacing the Heat Sink Assembly: Dell XPS 730/730X Service Manual
1 fan power connector
3 captive screws (4)
CAUTION: The processor heat sink is attached to the processor fan shroud. When you remove the
processor fan shroud, lay it upside down or on its side to avoid damaging the heat sink thermal interface.
CAUTION: Ensure that adequate thermal grease is applied to the top of the processor. Thermal grease is
critical for ensuring adequate thermal bonding, which is a requirement for optimal processor operation.
6. To replace the air cooled heat sing assembly, apply thermal grease to the top of the processor as needed.
7. Align the screw holes on the heat sink assembly with the holes on the base of the computer, then tighten the four
screws to secure the assembly.
8. Connect the fan cable to the rear fan connector on the LED circuit board.
9. Replace the computer cover (see

Replacing the Liquid Cooling Heat Sink Assembly

WARNING: The liquid cooling assembly is responsible for cooling the system board chipset in addition to
the CPU. If the liquid cooling assembly is replaced with an assembly other than the original, a cooling
solution must be installed to avoid overheating the chipset. Failure to install a cooling solution, either
third- party or Dell provided, may result in damage to your system and render the system inoperable.
1. Follow the procedures in
2. Remove the computer cover (see
WARNING: The processor heat sink can get very hot during normal operation. Be sure that the heat sink
has had sufficient time to cool before you touch it.
3. Observe the following cautions when working with the liquid cooling assembly.
The liquid cooling assembly is not user serviceable or upgradeable. All required service should be done by
qualified service personnel only.
The liquid cooling assembly in your system contains a non-refillable coolant. In the event of a coolant leak, shut
down your system immediately. Unplug your system from the power outlet and contact Dell Technical Support.
In the event of skin contact with the coolant, wash your skin with soap and water. Seek medical attention if
irritation develops.
In the event of eye contact with the coolant, rinse your eyes immediately with water, with your eyelids open, for
15 minutes. Seek medical attention if irritation persists.
4. Disconnect the liquid cooling cable from the H2C connector on the Master Control Board (see
CAUTION: The processor heat sink is attached to the liquid cooling assembly. When you remove the liquid
cooling assembly, lay it upside down or on its side to avoid damaging the heatsink thermal interface.
5. Loosen the screws on the liquid cooling assembly, then lift the assembly out of the computer and set it aside.
file:///C|/Users/santhosh_v/Desktop/7/SM_en/cooling_.htm[9/5/2013 11:46:40 AM]
2 LED circuit board
Replacing the Computer
Before You Begin.
Replacing the Computer
Cover).
Cover).
Master Control Board).