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Communications Cards

Dell™ Latitude™ D820  Service Manual

  Wireless Cards

  Subscriber Identity Module (SIM) Card

Wireless Cards

If you ordered a wireless LAN or WAN card with your computer, the card is already installed.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: To avoid damaging the system board, you must remove the main battery before you begin working inside the computer.

Wireless Local Area Network (WLAN) Cards

1. Follow the procedures in Before You Begin.
   
   
2. Remove the hinge cover (see Hinge Cover).
   
   
3. Remove the keyboard (see Keyboard).
   
   
4. Ground yourself by touching one of the metal connectors on the back of the computer.
   
   

NOTE: If you leave the area, ground yourself again when you return to the computer.

5. If a card is not already installed, go to step 6. If you are replacing a card, remove the existing card:
   
   
   1. Disconnect the antenna cables from the card.
      
      

1	antenna cables

2. Release the card by spreading the metal securing tabs until the card pops up slightly.
   
   

1

WLAN card

2

metal securing tabs (2)

3. Lift the card out of its connector.
   
   

NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card.

NOTE: Do not insert a Mobile Broadband network card into the WLAN card slot.

NOTE: The WLAN card may have two or three connectors, depending on the type of card you ordered.

6. Install the card:
   
   

NOTICE: To avoid damaging the WLAN card, never place cables on top of or under the card.

1. Move any antenna cables out of the way to make space for the WLAN card.
   
   
2. Align the card with the connector at a 45-degree angle, and press the card into the connector until it clicks.
   
   

NOTE: Your WLAN card may have two or three connectors, depending on the type of card you ordered. Most connectors have color-coded markings that correspond to the type of cable required.

NOTE: For more specific information about which cable to connect to which connector, see the documentation that came with your WLAN card.

7. Connect the antenna cables to the WLAN card, ensuring that you route the cables correctly.
   
   

Mobile Broadband Cards

1. Follow the procedures in Before You Begin.
   
   
2. Remove the hinge cover (see Hinge Cover).
   
   
3. Remove the keyboard (see Keyboard).
   
   
4. Ground yourself by touching one of the metal connectors on the back of the computer.
   
   

NOTE: If you leave the area, ground yourself again when you return to the computer.

5. If a card is not already installed, go to step 6. If you are replacing a card, remove the existing card:
   
   
   1. Disconnect the antenna cable or cables from the card.
      
      

1	antenna cables

2. Release the card by spreading the metal securing tabs until the card pops up slightly.
   
   

1

Mobile Broadband card

2

metal securing tabs (2)

3. Lift the card out of its connector.
   
   

NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card.

6. Install the card:
   
   

NOTICE: To avoid damaging the Mobile Broadband card, never place cables on top of or under the card.

1. Align the card with the connector at a 45-degree angle, and press the card into the connector until it clicks.
   
   

NOTE: Your Mobile Broadband card may have two or three connectors, depending on your configuration. Most connectors have color-coded markings that correspond to the type of cable required. For more specific information about which cable to connect to which connector, see the documentation that came with your Mobile Broadband card.

2. Connect the antenna cable or cables to the Mobile Broadband card, ensuring that you route the cables correctly.
   
   

Subscriber Identity Module (SIM) Card

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

1. Follow the procedures in Before You Begin.
   
   
2. Slide the SIM card into the slot with the cut-off corner of the card facing away from the slot.
   
   

1

SIM card

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