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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
Identifying the Chassis, Routine Care, and Disassembly Preparation on page 120
safety procedures.
1.
Close any open software applications.
2.
Exit the operating system.
3.
Remove any compact disc. or media card from the computer.
4.
Turn off the computer and any peripheral devices that are connected to it.
5.
Disconnect the power cord from the electrical outlet and then from the computer.
CAUTION:
as long as the system is plugged into an active AC outlet. You must disconnect the power cord
to avoid damage to the internal components of the computer.
6.
Disconnect all peripheral device cables from the computer.
NOTE:
Keep all screws with the units removed.
CAUTION:
the wrong screw in an application may damage the unit.
Serial Number Location
Each computer has a unique serial number and product ID number located on the back or side of the
computer. Keep these numbers available for use when contacting customer service for assistance.
Regardless of the power-on state, voltage is always present on the system board
During disassembly, label each cable as you remove it, noting its position and routing.
The screws used in the computer are of different thread sizes and lengths; using
for initial
Preparation for Disassembly
15
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