Dell Latitude E5420 (Early 2011) - Manual (Page 58)

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Installing the LED Board
Installing the LED Board
1. Insert the LED board on the left bracket.
2. Connect the cable to the system board.
3. Tighten the screw to secure the LED board.
4. Replace the palm rest.
5. Replace the CPU door .
6. Replace the keyboard .
7. Replace the keyboard trim .
8. Replace the optical drive.
9. Replace the back panel.
10. Replace the battery.
11. Follow the procedures in After Working Inside Your Computer .
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