Latitude 5421 Service Manual

If you are replacing a component, remove the existing component before performing the installation procedure.

The following image indicates the location of the coin-cell battery and provides a visual representation of the installation procedure.

1. Install the system board.
2. Install the assembly inner frame.
3. Install the heat sink - UMA or discrete based on the system configuration.
4. Install the battery.
5. Install the WWAN card.
6. Install the WLAN card.
7. Install the 2280 solid-state drive or 2230 solid-state drive.
8. Install the memory module.
9. Install the base cover.
10. Install the microSD card.
11. Install the SIM card.
12. Exit Service Mode.
13. Follow the procedure in After working inside your computer.