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Before servicing the computer
Carefully read this topic before servicing the computer.
Disabling the built-in battery
Before replacing any FRU, ensure that you have disabled the built-in battery by doing the following:
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 ThinkPad Setup when the ThinkPad logo is displayed.
3. Select Cong ➙ Power. The Power submenu is displayed.
4. Select Disable built-in battery.
5. Click Yes in the Setup Warning window. Then the computer will be turned off automatically. Wait
three to ve minutes to let the computer cool.
Removing the SIM card
If the computer you are servicing has the SIM card installed, remove it before servicing.
To remove the SIM card, disable the built-in battery rst. See “Disabling the built-in battery” on page 58.
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After you nish the servicing, ensure that you insert the card back into the slot rmly.
1010 Hard disk drive or solid-state drive
Attention:
• Do not drop the drive or apply any physical shock to it. The drive is sensitive to physical shock. Improper
handling can cause damage and permanent loss of data.
• Before removing the drive, have the user make a backup copy of all the information on it if possible.
• Never remove the drive while the computer is operating or in suspend mode.
Removal steps of hard disk drive or solid-state drive
Loosen the screw 1 , and then remove the hard disk drive or solid-state drive slot cover 2 .
58 Hardware Maintenance Manual