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Component replacement procedures
This chapter provides removal and replacement procedures for Authorized Service Provider only parts.
There are as many as 47 screws that must be removed, replaced, and/or loosened when servicing the
computer. Make special note of each screw size and location during removal and replacement.
Keyboard/top cover
NOTE: The keyboard/top cover spare part kit includes the keyboard cable, TouchPad, and
TouchPad cable.
Description Spare part number
For use in Canada 740172-DB1
For use in Denmark, Finland, and Norway 740172-DH1
For use in France 740172-051
For use in Germany 740172-041
For use in the Netherlands 740172-B31
For use in the United Kingdom and Singapore 740172-031
For use in the United States 740172-001
Before removing the disassembling the computer, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
Remove the keyboard/top cover:
1. Close the computer.
2. Turn the computer upside down, with the front toward you.
Component replacement procedures
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