Replacing The Base Cover Assembly - ThinkPad S440 User Manual

• Do not short-circuit it.
• Do not drop, crush, puncture, or subject to strong forces. Battery abuse or mishandling can
cause the battery to overheat, which can cause gasses or flame to "vent" from the battery
pack or coin cell.
Before replacing any CRU, 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 appears.
3. Select Config ➙ Power. The Power submenu is displayed.
4. Select Disable Built-in Battery.
5. Click Yes in the Setup Warning window. The built-in battery is disabled and the computer turns off
automatically. Wait three to five minutes to let the computer cool.

Replacing the base cover assembly

Before you start, print these instructions.
To replace the base cover assembly, do the following:
1. Disable the built-in battery. See "Disabling the built-in battery" on page 65.
2. Close the computer display, and turn the computer over.
3. Remove the screws
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User Guide
1 that secure the base cover assembly. Then remove the base cover assembly 2 .