Lenovo IdeaCentre A720 - Manual (Page 62)

Step 6. Remove the rear cover. Refer to “Removing the rear cover”.
Step 7. Use a small flat head screwdriver to prise the Bluetooth module away from the socket. 1 2
Step 8. Disconnect the cable from the Bluetooth module. 3
1
2
3
Step 9. To install the new Bluetooth module:
a. Connect the cable to the new Bluetooth module.
b. Line up the new Bluetooth module with the socket, snap it into position and secure it with
the pins.
Step 10. Reattach the rear cover to the LED panel.
Step 11. Reattach the hinge to the chassis, and reconnect the touch and LED panel cables to the
motherboard.
Step 12. Reattach the base cover and secure it with the screws.
Replacing the WLAN card
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
To replace the WLAN card:
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 base cover. Refer to “Removing the base cover”.
Step 5. Remove the hinge from the chassis. Refer to “Removing the hinge from the chassis”.
Step 6. Remove the rear cover. Refer to “Removing the rear cover”.
Step 7. Use a small flat head screwdriver to prise the WLAN card away from the socket. 1 2
Step 8. Disconnect the antenna cable 3 and data cable from the WLAN card. 4
56 IdeaCentre A720Hardware Maintenance Manual