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Before servicing ThinkPad X1 models
Removing the SIM card:
Some models of the ThinkPad X1 you are servicing might have the SIM card that the customer has installed.
If the computer you are servicing has the SIM card, remove it before you start the servicing.
After you finish the servicing, make sure that you insert the card back into the slot firmly.
1000 Disabling the battery pack in the UEFI BIOS
Before servicing the computer, disable the battery pack in the UEFI BIOS.
1. Turn off your computer and disconnect the ac power adapter and all cables from the computer.
2. Turn on your computer. Press F1 to enter the ThinkPad Setup program when the ThinkPad logo is
displayed.
3. Select Config ➙ Power. The submenu will be displayed.
4. Select Disable Built-in Battery.
5. Follow the instructions on the screen.
Then the battery pack is disabled in the UEFI BIOS. When ac power is reconnected, the battery pack
will be automatically enabled.
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ThinkPad X1Hardware Maintenance Manual
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