Battery; Lithium-Ion Battery Precautions - Dell Latitude 9420 Service Manual

Steps
1. Align and place the palm-rest assembly under the hinges of the display assembly.
2. Replace the six (M2.5x3) screws that secure the display assembly to the system.
3. Connect the display and camera cable to the connector on the system board.
Next steps
1. Install the base cover.
2. Install the SIM card tray.
3. Install the SD card.
4. Follow the procedure in
NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in
computer.

Battery

Lithium-ion battery precautions

CAUTION:
● Exercise caution when handling Lithium-ion batteries.
● Discharge the battery completely before removing it. Disconnect the AC power adapter from the system and
operate the computer solely on battery power—the battery is fully discharged when the computer no longer
turns on when the power button is pressed.
● 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.
34 Removing and installing components
After working inside your computer.
Before working inside your