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Chapter 1. Getting to Know Your Computer
8
c Battery pack
The battery pack provides power for the computer when no AC power source
is available. If the AC adapter is connected to the computer, the battery pack is
automatically charged. For details on “Using battery and AC adapter”, see
page 28.
d Battery latch - manual
The manual battery latch is used to keep the battery pack secured. Move the
manual battery latch to the unlocked position to insert or remove the battery
pack. Move the manual latch to the locked position after inserting the battery
pack.
e Hard Disk Drive/ TV card (Specific models only) compartment
The hard disk drive and TV-card are secured in a compartment.
 Important:
Do not disassemble or replace the hard disk drive yourself! If you do need to,
ask a Lenovo authorized service center or dealer to disassemble or replace it.
f Central Processor Unit (CPU)/ Memory (RAM)/ Wireless LAN Card
compartment
Central Processor Unit (CPU)
The CPU compartment provides space for the CPU and the radiator.
 Important:
Do not replace the CPU yourself! Visit an authorized service center or
retailer for replacing.
Memory (RAM) compartment
The memory compartment provides expansion capabilities for additional
memory. The BIOS automatically detects the amount of memory in the
system and configures CMOS accordingly during the Power-On Self-Test
(POST) process. There is no hardware or software (including BIOS) setup
required after the memory is installed.
Notes:
(1) Only purchase expansion modules from authorized retailers of this
computer to ensure maximum compatibility and reliability.
(2) If you only insert one memory card in the compartment, plug it into the
slot near the mainboard.
Wireless LAN Card compartment
The wireless network card are secured in a compartment.
 Important:
Do not disassemble or replace the Wireless LAN card by yourself! If you do
need to, ask a Lenovo authorized service center or dealer to disassemble or
replace it.