Some models of the ThinkPad X220 and X220i you are servicing might have the SIM card that the customer
has been installed.
If the computer you are servicing has the SIM card, remove it before you start the servicing.
To remove the SIM card, you need to remove the battery pack first. (See "1010 Battery pack" on page 60.)
After you finish the servicing, make sure that you insert the card back into the slot firmly.
Notice on disconnecting a cable from a flip-lock ZIF connector:
Some cables used in ThinkPad X220 and X220i models are connected to flip-lock ZIF connectors.
When disconnecting a cable from a flip-lock ZIP connector, do as shown in the following figure.
1
2
1010 Battery pack
Important notice for replacing a battery pack:
Lenovo ThinkVantage Toolbox (in Windows 7) has an automatic battery diagnostic that determines if the
battery pack is defective. A battery pack FRU should not be replaced unless this diagnostic shows that
the battery is defective.
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Hardware Maintenance Manual