Lenovo IdeaCentre B520 - Manual (Page 14)

9
Hardware Replacement Guide
Attention:
Do not remove the computer cover or attempt any repairs before reading
the “Important safety information” in the Safety and Warranty Guide that was
included with your computer or in the Hardware Maintenance Manual (HMM)
for the computer. To obtain copies of the Safety and Warranty Guide or
HMM, go to the Support Web site at: http://consumersupport.lenovo.com
Note: Use only parts provided by Lenovo.
General information
Pre-disassembly instructions
Before proceeding with the disassembly procedure, make sure that you do the
following:
1. Turn off the power to the system and all peripherals.
2. Unplug all power and signal cables from the computer.
3. Place the system on a flat, stable surface.
Removing the computer cover
Attention:
Turn off the computer and wait 3 to 5 minutes to let the computer cool
down before removing the computer 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 scratching or other
damage.
Replacing hardware
Chapter