Lenovo IdeaCentre A720 - Manual (Page 52)

Step 13. Pull the TV-Tuner card upward to remove it from the card port on the motherboard.
Step 14. To install the new TV-Tuner card:
a. Insert the notched end of the TV-Tuner card into the card port on the motherboard.
b. Secure new the TV-Tuner card to the motherboard with the 2 screws.
c. Connect the antenna cable(s) to the new TV-Tuner card.
Step 15. Line up motherboard with the chassis and slide it into position. Align the holes on the motherboard
with the mounting holes on the chassis and secure it to the chassis with the screws.
Step 16. Reattach the optical drive, heat-sink, and hard disk drive to the motherboard.
Step 17. Reattach the hinge to the chassis, and reconnect the touch and LED panel cables to the
motherboard.
Step 18. Reconnect all the cables back to the motherboard.
Step 19. Reattach the base cover and secure it with the screws.
Replacing the battery
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
To replace the battery
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 hard disk drive. Refer to “Replacing the hard disk drive”.
Step 6. Remove the heat-sink. Refer to “Replacing the heat-sink”.
Step 7. Remove the optical drive. Refer to “Replacing the optical drive”.
Step 8. Remove the hinge from the chassis. Refer to “Removing the hinge from the chassis”.
Step 9. Remove all the cables connected to the motherboard.
46 IdeaCentre A720Hardware Maintenance Manual