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4
Removal and replacement procedures
Adherence to the procedures and precautions described in this chapter is essential for proper service. After
completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all
components operate properly.
NOTE:
Not all features listed in this guide are available on all computers.
Preparation for disassembly
See
Routine care, SATA drive guidelines, and disassembly preparation on page 9
1.
Remove/disengage any security devices that prohibit opening the computer.
2.
Remove all removable media, such as compact discs or USB flash drives, from the computer.
3.
Turn off the computer properly through the operating system, and turn off any external devices.
4.
Disconnect the power cord from the AC outlet and disconnect any external devices.
IMPORTANT:
the system is plugged into an active AC outlet. To prevent damage to internal components, you must
disconnect the power cord from the power source before opening the computer.
5.
If the computer is on a stand, remove the computer from the stand and lay the computer down.
Regardless of the power-on state, voltage is always present on the system board as long as
for initial safety procedures.
Preparation for disassembly
17
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