8. Attach the connector of the speaker assembly.
9. Reinstall the base cover assembly.
10. Turn over the computer. Connect the ac power adapter and all disconnected cables to the computer.
USB and audio board (L490)
Prerequisite
Before you start, read Appendix A “Important safety information” on page 95 and print the following
instructions.
Replacement procedure
1. Disable the built-in battery. See “Disable Fast Startup and the built-in battery” on page 52.
2. Turn off the computer and disconnect the computer from ac power and all connected cables.
3. Close the computer display and turn over the computer.
4. Remove the base cover assembly. See “Base cover assembly” on page 52.
5. Remove the screws that secure the USB and audio board
1
, and then remove the USB and audio board
2
.
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L490/L590 User Guide
Summary of Contents for ThinkPad L490
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