Installing Base Cover; Battery; Lithium-Ion Battery Precautions - Dell Latitude 3490 Owner's Manual

Installing base cover

1. Align the base cover with the screw holders on the computer.
2. Press the edges of the cover until it clicks into place.
3. Tighten the 10 M2.5xL8.5 screws to secure the base cover to the computer.
NOTE: Make sure while installing the base cover not to get caught on the VGA port and damage either the base cover
or VGA port.
4. Remove the SD card
5. Install the SIM tray (WWAN
6. Follow the procedure in

Battery

Lithium-ion battery precautions

CAUTION:
● Exercise caution when handling Lithium-ion batteries.
● Discharge the battery as much as possible before removing it from the system. This can be done by
disconnecting the AC adapter from the system to allow the battery to drain.
● Do not crush, drop, mutilate, or penetrate the battery with foreign objects.
● Do not expose the battery to high temperatures, or disassemble battery packs and cells.
● Do not apply pressure to the surface of the battery.
● Do not bend the battery.
● Do not use tools of any kind to pry on or against the battery.
16 Disassembly and reassembly
models).
After working inside your computer