Dell XPS 13 9305 Service Manual - Page 37

Replacing the heat-sink assembly, Procedure

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18 Replacing the heat-sink assembly NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Incorrect alignment of the heat sink can damage the system board and processor. NOTE: If either the system board or the fan and heat-sink assembly is replaced, use the thermal pad/paste provided in the kit to ensure that thermal conductivity is achieved. Procedure NOTE: The following procedure applies only to computers shipped with Intel Core i5 or Intel Core i7 processor. 1. Align the screw holes on the heat-sink assembly with the screw holes on the system board. 2. Replace the two screws (M1.6x3) that secure the heat-sink assembly to the system board. 3. Replace the four screws (M2x3) that secure the heat-sink assembly to the system board in sequential order (as indicated on the heat-sink assembly). 4. Connect the right-fan cable to the system board. 5. Connect the left-fan cable to the system board. 6. Connect the camera cable to the system board. 7. Align the screw hole on the wireless antenna and camera-cable bracket to the screw hole on the system board 8. Replace the screw (M1.6x3) that secures the wireless antenna and camera-cable bracket to the system board. Replacing the heat-sink assembly 37

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Replacing the heat-sink assembly
NOTE:
Before working inside your computer, read the safety information that shipped with your computer and follow
the steps in
Before working inside your computer
. After working inside your computer, follow the instructions in
After
working inside your computer
. For more safety best practices, see the Regulatory Compliance home page at
www.dell.com/
regulatory_compliance
.
CAUTION:
Incorrect alignment of the heat sink can damage the system board and processor.
NOTE:
If either the system board or the fan and heat-sink assembly is replaced, use the thermal pad/paste provided in the
kit to ensure that thermal conductivity is achieved.
Procedure
NOTE:
The following procedure applies only to computers shipped with Intel Core i5 or Intel Core i7 processor.
1.
Align the screw holes on the heat-sink assembly with the screw holes on the system board.
2.
Replace the two screws (M1.6x3) that secure the heat-sink assembly to the system board.
3.
Replace the four screws (M2x3) that secure the heat-sink assembly to the system board in sequential order (as indicated on
the heat-sink assembly).
4.
Connect the right-fan cable to the system board.
5.
Connect the left-fan cable to the system board.
6.
Connect the camera cable to the system board.
7.
Align the screw hole on the wireless antenna and camera-cable bracket to the screw hole on the system board
8.
Replace the screw (M1.6x3) that secures the wireless antenna and camera-cable bracket to the system board.
18
Replacing the heat-sink assembly
37