Lenovo IdeaCentre B550 All-in-One - Manual (Page 35)

Step 3. Disconnect the failing power cord and adapter from the computer.
Step 4. Connect the new power cord to the same connector as
shown.
Removing the computer cover
Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
To remove the computer cover:
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.
Chapter 8 . Replacing hardware 29