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Dell Latitude 3420 - System Board Replacement Guide

Dell Latitude 3420
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System board
Removing the system board
Prerequisites
1. Follow the procedure in before working inside your computer.
2. Remove the microSD-card.
3. Remove the SIM card tray for 4G LTE enabled systems.
4. Remove the base cover.
5. Remove the battery.
6. Remove the memory module.
7. Remove the M.2 SSD.
8. Remove the hard-disk drive for systems shipped with hard-disk drive.
9. Remove the WLAN card.
10. Remove the heatsink assembly.
About this task
System board connectors
NOTE: The location of the memory module may vary depending on your system.
1. System fan cable connector 2. I/O cable connector
3. Memory module connector 4. Display cable connector
5. Power adapter port connector 6. Keyboard backlit LED cable connector
7. Keyboard cable connector 8. Touchpad cable connector
9. Battery cable connector 10. Hard-disk drive cable connector
11. USB cable connector 12. Speaker cable connector
13. WLAN card connector 14. M.2 SSD connector
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
Removing and installing components
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