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NOTE: If the memory module is not installed properly, the computer may not boot. No error message indicates this failure. 1 tab 2 notch 3 memory module Back to Contents Page Communication Cards Dell™ Inspiron™ 1420/Dell Vostro™ 1400 Service Manual Removing a WLAN Card Replacing a WLAN Card Removing a Mobile Broadband or WWAN Card Replacing a WWAN Card If you ordered a wireless Mini-Card with your computer, the card is already installed. Your computer supports two types of wireless Mini-Cards: l Wireless Local Area Network (WLAN) l Mobile Broadband or Wireless Wide Area Network (WWAN) Removing a WLAN Card 1. Follow the procedures in Before You Begin. 2. Remove the keyboard cover (see Removing the Keyboard Cover). 3. Remove the keyboard (see Removing the Keyboard). 4. Loosen the screw that secures the WLAN card to the system board. 5. Disconnect the antenna cables from the WLAN card. 6. Lift the WLAN card from the computer at a 45-degree angle. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent damage to the system board, remove the main battery before you service the computer. 1 antenna cable connectors 2 WLAN card 3 screw Replacing a WLAN Card 1. Insert the WLAN card connector into the system board connector labeled "WLAN" at a 45-degree angle by aligning the notch on the WLAN card to the slot on the system board connector. 2. Press down the other end of the WLAN card and tighten the screw securing the card to the system board. 3. Connect the appropriate antenna cables to the WLAN card you are installing: If the WLAN card has two triangles on the label (white and black), 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). If the WLAN card has three triangles on the label (white, black, and gray), connect the white antenna cable to the white triangle, connect the black antenna cable to the black triangle, and connect the gray antenna cable to the gray triangle. 4. Secure unused antenna cables in the protective mylar sleeve. 5. Replace the keyboard (see Replacing the Keyboard). 6. Replace the keyboard cover (see Replacing the Keyboard Cover). Removing a Mobile Broadband or WWAN Card 1. Follow the procedures in Before You Begin. 2. Remove the keyboard cover (see Removing the Keyboard Cover). 3. Remove the keyboard (see Removing the Keyboard). 4. Loosen the screw that secures the WWAN card to the system board. 5. Disconnect the antenna cables from the 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 WLAN card, never place cables under the card. NOTE: WWAN is also available on an ExpressCard. NOTE: WWAN card and FCM share the same slot. You can install only one card at a time. 6. Lift the card from the computer at a 45-degree angle. Replacing a WWAN Card 1. Insert the WWAN card connector into the system board connector labeled "WWAN" at a 45-degree angle by aligning the notch on the WWAN card to the slot on the system board connector. 2. Press down the other end of the WWAN card and tighten the screw securing the card to the system board. 3. Connect the appropriate antenna cables to the WWAN card you are installing. Connect the white striped cable to the connector on the card marked with a white triangle. Connect the black striped cable to the connector on the card marked with a black triangle. 4. Secure unused antenna cables in the protective mylar sleeve. 5. Replace the keyboard (see Replacing the Keyboard). 6. Replace the keyboard cover (see Replacing the Keyboard Cover). Back to Contents Page 1 WWAN card 2 antenna cables (2) 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, never place cables under the card. Back to Contents Page Modem Dell™ Inspiron™ 1420/Dell Vostro™ 1400 Service Manual Removing and Replacing the Modem Removing and Replacing the Modem 1. Follow the procedures in Before You Begin. 2. Turn the computer over, loosen the three captive screws on the modem cover, and then remove the cover. 3. Remove the screw securing the modem to the system board. 4. Remove the modem cable. 5. Remove the modem by using the pull-tab. 6. Connect the modem cable. 7. Install the replacement modem by pressing the modem into the connector on the system board. 8. Tighten the screw securing the modem to the system board. 9. Replace the modem cover and tighten the three captive screws. Back to Contents Page CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. 1 screw 2 pull-tab 3 modem cable 4 modem NOTICE: T...