Dell Dimension 2200, Руководство пользователя

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7-10 Dell PowerEdge 2200 Systems User’s Guide
6. Reinstall the two screws securing the micro-
processor module to the system board assembly.
Carefully stand the system board assembly on one
edge, and reinstall the two hexagonal screws in the
underside of the system board assembly (see Figure
7-9).
7. If necessary, change the microprocessor speed
jumper setting to correspond to the new micro-
processor’s operating frequency.
The microprocessor speed jumper should be set for
the installed microprocessor’s rated internal speed.
For example, for a 266-megahertz (MHz) Intel Pen-
tium II processor, a jumper plug should be installed
on the jumper labeled “266MHZ.” (See Appendix B,
“Hardware Configuration Features,” for more infor-
mation on jumpers.)
8. Connect the temperature sensor cable to the
microprocessor module and to the system board
(see Figure 7-10).
The cable for the primary microprocessor attaches to
connector TEMP_1 on the system board, while the
cable for the secondary microprocessor attaches to
connector TEMP_2 on the system board. The con-
nectors on the cable are keyed to ensure proper
orientation.
9. Replace the system board according to the
instructions in “Replacing the System Board
Assembly” in Chapter 6.
10. Replace the computer cover according to the
instructions in “Replacing the Computer Cover”
in Chapter 6.
11. Reconnect your computer and peripherals to
their power sources, and turn them on.
As the system boots, it detects the presence of the
new microprocessor and automatically changes the
system configuration information in the System
Setup program.
12. Enter the System Setup program, and confirm
that the Processor 1 and Processor 2 categories
correctly identify the installed microprocessor(s).
See Chapter 4, “Using the System Setup Program.”
13. Run the system diagnostics to verify that the new
microprocessor is operating correctly.
See Chapter 2, “Using the Dell Server Assistant
CD,” for information on running the diagnostics
from the Dell Server Assistant CD. The chapter titled
“Running the Diskette-Based Diagnostics” in your
Diagnostics and Troubleshooting Guide provides
additional information on running the diagnostics
and troubleshooting any problems that may occur.
R
eplacing the System Battery
The 3-volt (V) lithium backup battery (see Figure 7-11),
mounted in the BATTERY socket on the system board
(Figure 7-1), maintains system configuration, date, and time
information in a special section of memory when the system is
turned off and disconnected from alternating current (AC)
power.
Figure 7-11. System Battery and Battery Socket
The operating life of the battery can extend up to 10 years,
depending on how you use your system (for example, if
your system is connected to AC power most of the time,
the battery gets little use and thus lasts longer). The battery
may need replacing if an incorrect time or date is displayed
during the boot routine along with a message such as:
System battery is dead - Replace and run
Setup
or
System CMOS checksum bad — Run Setup
BATTERY socket
battery