Lenovo IdeaCentre B520e - Manual (Page 58)

Step 8. Line up the new IR emitter with IR emitter port then push it into position.
Step 9. Reattach the LED panel, the EMI cover, back deco, the computer cover and computer stand.
Replacing the keyboard and mouse
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 replace the keyboard and mouse:
Step 1. Remove any media (disks, CDs, 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.
52 IdeaCentre B520e Hardware Maintenance Manual