Appendix. CRU instructions
Replacing the battery - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To replace the battery, do the following:
1Turn off the computer. Disconnect the AC power adapter and all cables
from the computer.
2Close the computer display, and turn the computer over.
3Unlock the manual latch 1. Slide the spring-loaded latch to the unlocked
position 2 to eject the battery pack. Lift up the inner edge of the battery
pack, pivoting it on the outer edge. Slide the battery pack in the indicated
direction to remove it.
4Install a fully charged battery.
5Slide the manual battery latch to the locked position.
6Turn the computer over again.
7Connect the AC power adapter and the cables to the computer.
Notes:
• The illustrations used in this appendix are for the Lenovo G500s, unless otherwise stated.
• The following steps about upgrading and replacing devices may differ slightly between
G500s and G400s/G405s/G400s Touch/G505s/G500s Touch.
• Make sure the battery has been removed before replacing any devices.
Note:Use only the battery provided by Lenovo. Any other battery could ignite or explode.
Note:Do not rotate the battery pack beyond 45 degrees, otherwise it may be damaged.
d
c
d
b
a
Appendix. CRU instructions
37
Replacing memory - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
You can increase the amount of memoryin your computer by installing a
double-data-rate three low voltage synchronous dynamic random access
memory (DDR3L SDRAM)-available as an option-in the memory slot of your
computer. DDR3L SDRAMs are available in various capacities.
To install a DDR3L SDRAM, do the following:
1Touch a metal table or a grounded metal object to reduce any static
electricity in your body, which could damage the DDR3L SDRAM. Do
not touch the contact edge of the DDR3L SDRAM.
2Turn off the computer. Disconnect the AC power adapter and all cables
from the computer.
3Close the computer display, and turn the computer over.
4Remove the battery again.
5Remove the Hard disk drive/Memory/Central processing unit/wireless
LAN card slot compartment cover.
a.Loosen the screws that secure the compartment cover .
b.Remove the compartment cover .
Note:Use only the memory types supported by your computer. If you incorrectly install
optional memory, or install an unsupported memory type, a warning beep will sound
when you try to start the computer.
a
b
b
a
a
a
38
Appendix. CRU instructions
6If two DDR3L SDRAMs are already installed in the memory slot, remove
one of them to make room for the new one by pressing out on the latches
on both edges of the socket at the same time. Be sure to save the old
DDR3L SDRAM for future use.
7Align the notch of the DDR3L SDRAM with the protrusion of the socket
and gently insert the DDR3L SDRAM into the socket at a 30-45° angle.
8Push the DDR3L SDRAM inward toward the socket until the latches on
both edges of the socket are pushed into the closed position.
9After aligning the attachment clips with their matching gaps, reinstall the
compartment cover.
0Reinstall and tighten the screws.
AReinstall the battery.
BTurn the computer over again.
CConnect the AC power adapter and the cables to the computer again.
b
a a
b
a
Appendix. CRU instructions
39
To make sure that the DDR3L SDRAM is installed correctly, do as follows:
1Turn the computer on.
2Hold Fn + F2during startup. The BIOS setup utility screen opens. The
System Memoryitem shows the total amount of memory installed in
your computer.
Note:If only one DDR3L SDRAM is used on the computer you are servicing, the card must be
installed in SLOT-0 ( : lower slot), but not in SLOT-1 ( : upper slot).
b
a
40
Appendix. CRU instructions
Replacing the wireless LAN card - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To replace the wireless LAN card, do the following:
1Turn off the computer. Disconnect the AC power adapter and all cables
from the computer.
2Close the computer display and turn the computer over.
3Remove the battery pack.
4Remove the Hard disk drive/Memory/Central processing unit/wireless
LAN card slot compartment cover.
5Disconnect the two wireless LAN cables (one black, one white) .
6Remove the screw that secures the wireless LAN card .
Note:The wireless LAN card in select models may have only one cable (black).
a
1
b
2
Appendix. CRU instructions
41
7Take out the wireless LAN card .
8Install the new wireless LAN card.
9Reinstall and tighten the screw.
0Reconnect the two wireless LAN cables (one black, one white).
AReinstall the compartment cover and tighten the screws.
BReinstall the battery pack.
CTurn the computer over again.
DConnect the AC power adapter and the cables to the computer again.
Note:When installing or reinstalling the wireless LAN card:
• In models with a wireless LAN card that has two cables:
Plug the black cable (MAIN) into the jack labeled M(MAIN).
Plug the white cable (AUX) into the jack labeled A(AUX).
• In models with a wireless LAN card that has only one cable, plug the black cable
(MAIN) into the jack labeled M(MAIN).
c
3
42
Appendix. CRU instructions
Removing the optical disc drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To remove the optical disc drive, do the following:
1Remove the Hard disk drive/Memory/Central processing unit/wireless
LAN card slot compartment cover.
2Remove the screw shown in the illustration .
3Gently pull the optical disc drive out .
The following table provides a list of CRUs (Customer Replaceable Units) for
your computer, and informs you of where to find replacement instructions.
Setup Poster User Guide
AC power adapter O
Power cord for AC power adapter O
Battery pack O O
Memory O
Wireless LAN card O
Optical disc drive O
a
b
a
b
43
Trademarks
The following terms are trademarks or registered trademarks of Lenovo in
the United States, other countries, or both.
Lenovo
OneKey
Microsoft and Windows are trademarks of Microsoft Corporation in the
United States, other countries, or both.
Other company, products, or service names may be trademarks or service
marks of others.
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