10. Remove the keyboard (3).
Reverse this procedure to install the keyboard.
Top cover
Description Spare part number
Top cover for use in model 4530s:
With a fingerprint reader and USB 3.0 646251-001
Without a fingerprint reader and with USB 3.0 646253-001
With a fingerprint reader and USB 2.0 658344-001
Without a fingerprint reader and with USB 2.0 658345-001
Top cover for use in model 4730s:
With a fingerprint reader 646257-001
Without a fingerprint reader 646260-001
Before removing the top cover, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
Component replacement procedures 65
