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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 54.)
After you finish the servicing, make sure that you insert the card back into the slot firmly.
1010 Battery pack
Important notice for replacing a battery pack:
• Lenovo ThinkVantage Toolbox 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.
• The only exception to this is if the battery pack is physically damaged or a customer is reporting a possible
safety issue.
• If Lenovo ThinkVantage Toolbox is not installed in the computer, the customer should download this program
before a non-physically damaged battery pack is replaced. Note that a physically damaged battery pack is a
non-warranty replacement part.
Table 8. Removal steps of battery pack
DANGER
Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.
Unlock the battery latch
the direction shown by arrow
54
Hardware Maintenance Manual
1
. Holding the battery lock lever in the unlocked position
3
.
2
, remove the battery pack in
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