Service manual

Dell
™
Latitude™ E6420 XFR Service Manual
Page 13
5. Slide the card out of the card connector on the system board.
1
WWAN card
2
Card connector
4.2 Replacing a WWAN/FMC 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 WWAN card, ensure the cables are not under the card when
you replace it.
NOTICE: Insert a WWAN card or FCM only into the slot labeled WWAN/WiMax.
1. Slide the card into the connector labeled WWAN/FCM.
2. Press the card down and hold it in place.
3. Replace the M2 x 3-mm screw.
4. Connect the white antenna cable to the connector labeled "main" (white triangle), and connect the black
antenna cable to the connector labeled "aux" (black triangle).
5. Replace the Bottom Access Panel (see
Replacing the Bottom Access Panel
).
6. Follow the procedures in
After Working on Your Computer.
5 WPAN (UWB) Card
CAUTION: Before you begin any of the procedures in this section, follow the safety
instructions that shipped with your computer.
NOTICE:
WPAN is a generic name for Ultra Wide Band (UWB) and Bluetooth® (BT). Insert a
WPAN card only into the slot labeled WPAN/UWB/FCM.
5.1 Removing a WPAN (UWB) Card
1. Follow the procedures in Before Working on Your Computer.
2. Remove the Bottom Access Panel (see
Removing Bottom Access Panel).
3. Remove the WWAN/FMC card if present to fully expose the WPAN card (see Removing the WWAN/FMC Card).
4. Disconnect any cables from the card.
5. Remove the M2 x 3-mm screw. The card pops up at a 45-degree angle.