Dell Latitude E5420 (Early 2011) - Manual (Page 130)

26. Remove the speakers.
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Installing the Speakers
Installing the Speakers
1. Secure the speaker cables to the routing channels.
2. Connect the speakers.
3. Tighten the screws to secure the speakers.
4. Replace the audio board .
5. Replace the Bluetooth .
6. Replace the system board .
7. Replace the support brackets .
8. Replace the LED board. .
9. Replace the display assembly .
10. Replace the ExpressCard/Smart Card/PCMCIA module .
11. Replace the palm rest .
12. Replace the processor.
13. Replace the heat sink.
14. Replace the CPU door .
15. Replace the wireless local area network (WLAN) .
16. Replace the wireless wide area network (WWAN) .
17. Replace the hard drive.
18. Replace the optical drive.
19. Replace the keyboard .
20. Replace the keyboard trim .
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