4 Removal and replacement procedures:
Small Form Factor
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 11 for initial safety procedures.
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as compact discs or USB ash drives, from the computer.
3. Turn o the computer properly through the operating system, then turn o any external devices.
4. Disconnect the power cord from the power outlet and disconnect any external devices.
CAUTION: Turn o the computer before disconnecting any cables.
Regardless of the power-on state, voltage is always present on the system board as long as the system
is plugged into an active AC outlet. In some systems the cooling fan is on even when the computer is in
the “Standby,” or “Suspend” modes. The power cord should always be disconnected before servicing a
unit.
5. If the computer is on a stand, remove the computer from the stand and lay the computer down.
NOTE: During disassembly, label each cable as you remove it, noting its position and routing. Keep all
screws with the units removed.
Preparation for disassembly 19
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