Lenovo S40-40 All-in-One - Manuale (Pagina 46)

Step 7. Disconnect the antenna cables from the WLAN card.
Step 8. Remove the screw that secures the WLAN card to the motherboard.
Step 9. Lift up the WLAN card to remove it from the socket.
Step 10. To install the new WLAN card:
a. Insert the notched end of the WLAN card into the card port on the motherboard.
b. Secure new the WLAN card to the motherboard with the screw.
c. Connect the antenna cables to the new WLAN card.
Step 11. Reattach the motherboard cover, hinge fixing bracket, back cover and stand.
Replacing the speaker system
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
To replace the speaker system:
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
Step 2. Unplug all power cords from electrical outlets.
Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to “Left and right view”
and “Rear view” for help with locating the various connectors.
Step 4. Remove the stand and back cover. Refer to “Removing the stand and back cover”.
Step 5. Remove the hinge fixing bracket. Refer to “Removing the hinge fixing bracket”.
Step 6. Remove the motherboard cover. Refer to “Removing the motherboard cover”.
40 Lenovo S40–40Hardware Maintenance Manual