Lenovo IdeaCentre A720 - Manual (Page 60)

Step 10. To install the new converter board:
a. Line up the holes on the new converter board with the mounting holes on the middle frame
and secure it with the 4 screws.
b. Connect the 2 cables to the new converter board.
Step 11. Reattach the rear cover to the LED panel.
Step 12. Reattach the hinge to the chassis, and reconnect the touch and LED panel cables to the
motherboard.
Step 13. Reattach the base cover and secure it with the screws.
Replacing the power switch board
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
To replace the power switch board
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. Disconnect the power cable from the power switch board.
54 IdeaCentre A720Hardware Maintenance Manual