Lenovo A540 All In One - Manual (Page 37)

Step 9. Remove the 3 screws that secure the motherboard to the chassis and slide it out as shown.
Step 10. To install the new motherboard:
a. Install the memory module to the connector on the new motherboard.
b. Line up the new motherboard with the chassis and slide it into position. Align the holes on
the new motherboard with the mounting holes on the chassis and secure it to the chassis
with the screws.
c. Connect all the cables to the new motherboard.
Step 11. Reattach the base cover and secure it with the screws.
Removing the hinge from the chassis
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
To remove the hinge from the chassis
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”.
Chapter 7 . Replacing hardware 31