Dell Alienware x17 R1 Service Manual page 54

Steps
1. Peel the tape that secures the camera-cable connector latch to the system board.
2. Lift the latch and disconnect the camera cable from the system board.
3. Move the camera cable off the system board.
4. Disconnect the left-fan cable from the system board.
5. Using the pull tab, disconnect the I/O-board cable from the system board.
6. Move the I/O-board cable off the system board.
7. Using the pull tab, disconnect the headset-port cable from the system board.
8. Move the headset-port cable off the system board.
9. Lift and latch and disconnect the power-button cable from the system board.
10. Disconnect the speakers cable from the system board.
11. Lift the latch and disconnect the keyboard-controller board cable from the system board.
12. Remove the screw (M2x3) that secures the wireless-card bracket to the system board.
13. Lift the wireless card bracket off the system board.
14. Disconnect the antenna cables from the wireless-card on the system board.
15. Remove the four screws (M2x3) that secure the system-board and heat-sink assembly to the palm-rest and keyboard
assembly.
16. Remove the screw (M2x4) that secures the system board to the palm-rest and keyboard assembly.
17. Hold firmly on the left and right fans and lift the system-board assembly off the palm-rest and keyboard assembly.
18. Remove the fan and heat-sink
NOTE: Before returning the old system board. Adhere the processor (CPU) sticker over the processor (CPU) chip
surface and ensure that it is fully covered .
CAUTION: Once the system board assembly has been removed from the computer, follow the instructions in
the tech sheet dispatched with the replacement system board assembly.
CAUTION: Do not use an alcohol wipe to clean the Element 31 thermal grease from the processor (CPU) chip
which is surrounded by the processor (CPU) barrier sheet. The alcohol solution from the wipes will dissolve
the Element 31 grease into conductive metal particles. If these conductive metal particles come into contact
with the surface of the system board, it will cause the an electrical short when your computer is powered on.
Installing the system board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
54 Removing and installing components
assembly.