Component replacement procedures
This chapter provides removal and replacement procedures.
There are as many as 90 screws that must be removed, replaced, or loosened when servicing the
computer. Make special note of each screw size and location during removal and replacement.
Service cover
Description Spare part number
Service cover, black 727508-001
Service cover, red 728180-001
Before disassembling the computer, 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.
Remove the service cover:
1. Position the computer face down, and then remove the 4 smaller Phillips screws along the front of
the computer.
Component replacement procedures
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