Replacing the System Board

WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in "Before You Begin" on page 8. After working inside your computer, follow the instructions in

"After Working Inside Your Computer" on page 10. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.

Procedure

1Replace the primary memory-module by following the instructions from step 1 to step 2 in "Replacing the Memory Module(s)" on page 25.

2Turn the system-board assembly over.

3Slide the system-board ports under the tab and into the slots on the palm-rest assembly.

4Align the screw holes on the system-board assembly with the screw holes on the palm-rest assembly.

NOTE: Ensure that no cables are under the system-board assembly.

5Replace the screws that secure the system-board assembly to the palm-rest assembly.

6Slide the I/O-board cable, keyboard cable, keyboard-backlight cable, touchpad cable, and power/battery status-light cable into their connectors and press down on the connector latches to secure the cables.

7Connect the display cable, speaker cable, coin-cell-battery cable, I/O-board grounding cable, and camera cable to the system board.

8Route the antenna cables through the routing guides on the system-board assembly.

9Adhere the mylar to the system-board assembly.

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Dell 15, XPS L521X, L521X13590620SA manual Replacing the System Board

XPS L521X, L521X13590620SA, 15 specifications

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