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Chapter 6. Replacing devices
This chapter provides instructions on how to install or replace hardware for your computer.
• “Static electricity prevention” on page 67
• “Replacing the battery” on page 67
• “Replacing the SIM card” on page 69
• “Replacing the hard disk drive” on page 70
• “Replacing the optical drive” on page 73
• “Replacing a PCI Express Mini Card for wireless LAN connection” on page 77
• “Replacing a PCI Express Mini Card for wireless WAN connection” on page 80
• “Replacing a memory module” on page 85
• “Replacing the keyboard” on page 87
• “Replacing the backup battery” on page 92
• “Replacing the thermal fan” on page 95
Static electricity prevention
Static electricity, although harmless to you, can seriously damage computer components and options.
Improper handling of static-sensitive parts can cause damage to the part. When you unpack an option or
a CRU, do not open the static-protective package containing the part until the instructions direct you
to install it.
When you handle options or CRUs, or perform any work inside the computer, take the following precautions
to avoid static-electricity damage:
• Limit your movement. Movement can cause static electricity to build up around you.
• Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the
edges. Never touch exposed circuitry.
• Prevent others from touching components.
• When you install a static-sensitive option or CRU, touch the static-protective package containing the
part to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two
seconds. This reduces static electricity from the package and your body.
• When possible, remove the static-sensitive part from the static-protective packaging and install the part
without setting it down. When this is not possible, place the static-protective packaging on a smooth,
level surface and place the part on it.
• Do not place the part on the computer cover or other metal surface.
Replacing the battery
Before you start, print these instructions.
This system supports only batteries specially designed for this specic system and manufactured by Lenovo
or an authorized builder. The system does not support unauthorized batteries or batteries designed for other
systems. If an unauthorized battery or a battery designed for another system is installed, the system will
not charge.
© Copyright Lenovo 2012
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