Service manual

Dell
™
Latitude™ E6420 XFR Service Manual
Page 15
5.2 Replacing a WPAN (UWB) Card
NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the
connectors on the card and on the system board, and realign the card.
NOTICE: To avoid damage to the WPAN card, ensure the cables are not under the card when
you replace it.
NOTICE: Insert a WPAN card only into the slot labeled WPAN/UWB/FCM.
1. Slide the card into the connector labeled WPAN/UWB/FCM.
2. Press the card down and hold it in place.
3. Replace the M2 x 3-mm screw.
4. Connect any cables to the WPAN card.
5. Replace the WWAN/FMC Card if present (see Replacing the WWAN/FMC Card).
6. Replace the Bottom Access Panel (see
Replacing the Bottom Access Panel).
7. Follow the procedures in
After Working on Your Computer.
6 RF Passthru Board (Optional)
6.1 Removing the RF Passthru Board
CAUTION: Before you begin any of the procedures in this section, follow the safety
instructions that shipped with your computer.
1. Follow the procedures in Before Working on Your Computer.
2. Remove the bottom access panel (see
Removing the Bottom Access Panel).
3. Disconnect the 3 antenna connections on the RF Passthru board.
4. Disconnect the antenna connection from the RF Passthru board to the GPS module if present