Wireless Wide Area Network (Wwan) Antenna Module; Removing The Wwan Main Antenna Module - Dell Latitude 9420 Service Manual

Steps
1. Connect the USH daughter board FPC cable from USH daughter board.
2. Place the USH daughter board with the FPC cable in the slot on the system.
3. Replace the two (M1.2x2.5) screws securing the USH daughter board to the palm-rest assembly
4. Adhere the USH daughter board FPC cable to the keyboard.
5. Gently connect the power button with fingerprint reader FPC cable to the connector on the USH daughter board.
Next steps
1. Install the system board
2. Install the I/O daughter
3. Install the battery.
4. Install the display assembly.
5. Install the heat sink.
6. Install the WWAN card.
7. Install the base cover.
8. Install the SIM card tray.
9. Install the SD card.
10. Follow the procedure in
Wireless Wide Area Network (WWAN) Antenna
module

Removing the WWAN main antenna module

Prerequisites
1. Follow the procedure in
2. Remove the SD card.
3. Remove the SIM card
4. Remove the base cover.
5. Remove the WWAN card.
.
board.
After working on your computer.
before working inside your
tray.
computer.
Removing and installing components 53