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WWAN Card

Dell Precision™ M6400 Service Manual

  Removing a WWAN Card

  Replacing a WWAN Card

CAUTION: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage on www.dell.com at: www.dell.com/regulatory_compliance.

NOTICE: Insert a WWAN card or FCM only into the slot labeled WWAN/FCM.

Removing a WWAN Card

1. Follow the procedures in Before Working on Your Computer.
   
   
2. Remove the base assembly cover (see Removing the Base Assembly Cover).
   
   
3. Disconnect the antenna cables from the card.
   
   
4. Remove the M2 x 3-mm screw. The card pops up at a 45-degree angle.
   
   

1	antenna cables (2)	2	WWAN card
3	M2 x 3-mm screw

5. Slide the card out of the card connector on the system board.
   
   

1

WWAN card

2

card connector

Replacing a WWAN 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/FCM.

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 base assembly cover (see Replacing the Base Assembly Cover).
   
   
6. Follow the procedures in After Working on Your Computer.
   
   

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