Lenovo A540 All In One - Manual (Page 30)

Step 5. Return the computer to an upright position, then lift the base cover up and slide it out as shown.
Step 6. To reattach the base cover:
a. Line up the base cover with the base, slide it back and snap it into position.
b. Place the computer face-down on a soft flat surface, then secure the base cover to the base
with the 8 screws.
Replacing the hard disk drive
Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
To replace the hard disk drive
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”.
24 Lenovo A540/A740Hardware Maintenance Manual