Lenovo B575e Laptop User Guide - Lenovo B475e, B575e - Page 60
Prerequisites for the procedure, Electric current from power, telephone
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Prerequisites for the procedure DANGER During electrical storms, do not connect the cable to or disconnect it from the telephone outlet on the wall. DANGER Electric current from power, telephone, and communication cables is hazardous. To avoid shock hazard, disconnect the cables before opening the cover of this slot. Attention: Before you start installing a PCI Express Mini Card, touch a metal table or a grounded metal object. This action reduces any static electricity from your body. The static electricity could damage the card. To replace the PCI Express Mini Card, refer to the instructions for the computer. • "Lenovo B475e" on page 46 • "Lenovo B575e" on page 47 Lenovo B475e To replace the PCI Express Mini Card, do the following: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait for a few minutes, till the inside of the computer cools, before you start the following procedures. 2. Close the computer display, and turn the computer over. 3. Remove the battery. See "Replacing the battery" on page 35. 4. Loosen or remove the screws 1 , and then remove the cover 2 . 1a 1b 2 1a 5. If a tool for removing connectors is included in the package with the new card, use it to disconnect the cables 3 from the card. If no such tool is included, disconnect the cables by picking up the connectors with your fingers and gently unplugging them. Then remove the screw 4 and the card pops up. 46 User Guide