Dell Latitude E5420 (Early 2011) - Manual (Page 42)

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Installing the CPU Door
Installing the CPU Door
1. Slide the CPU door downwards and towards the back of the computer.
2. Tighten the screws to secure the CPU door.
3. Replace the back panel.
4. Replace the battery.
5. Follow the procedures in After Working Inside Your Computer .
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Removing the CPU Door
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