CAUTION: If you are unable to turn on the computer, if your computer is unable to enter Service Mode, or the
computer does not support Service Mode, proceed to disconnect the battery cable.
2. Remove the SIM card.
About this task
NOTE: Before removing the base cover, ensure that there is no SD card that is installed in the SD card slot on your
computer.
The following images indicate the location of the base cover and provide a visual representation of the removal procedure.
Figure 13. Loosen the captive screws
Removing and installing Customer Replaceable Units (CRUs)
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