Dell Latitude 3420 Service Manual page 90

Steps
After performing the succeeding steps, you are left with the palmrest assembly.
Next steps
1. Install the system board.
2. Install the WWAN I/O board
3. Install the USB cable.
4. Install the coin-cell battery.
5. Install the I/O board.
6. Install the power adapter
7. Install the heatsink assembly.
8. Install the system fan.
9. Install the display assembly.
10. Install the I/O board cable.
11. Install the WWAN card
12. Install the WLAN card.
13. Install the hard-disk drive.
14. Install the M.2 SSD conversion
15. Install the M.2 SSD conversion
16. Install the M.2 SSD.
17. Install the memory module.
18. Install the battery.
19. Install the base cover.
20. Install the SIM card tray
21. Install the microSD-card.
22. Follow the procedure in
90 Removing and installing components
for systems enabled with 4G LTE.
port.
for systems enabled with 4G LTE.
plate.
bracket.
for 4G LTE enabled systems.
after working inside your computer.