Installing System Board Options 6-9
6. Insert the new SEC cartridge/heat sink assembly
into the system board connector.
Press the SEC cartridge release latches outward until
they snap into position. Orient the assembly with the
heat sink facing toward the right (as you face the
front of the chassis), and press the SEC cartridge
firmly into its connector until it is fully seated. You
must use up to 25 pounds of force to fully seat the
SEC cartridge/heat sink assembly in the connector.
7. Slide the heat sink clips back into position.
8. If your upgrade kit included an airflow shroud,
install it over the SEC cartridge/heat sink
assembly.
Fit the mouth of the shroud into the alignment slots on
the sides of the cooling fan. Then squeeze the tabs on
the top of the shroud and lower it down until the clips
under the tabs engage onto the top of the heat sink.
9. If necessary, change the microprocessor speed
jumper setting (see Figure 5-6 to locate the system
board jumpers).
The microprocessor speed jumper should be set for
the installed microprocessor’s rated internal speed.
For example, for a 300-megahertz (MHz) Intel Pen-
tium II processor, a jumper plug should be installed
on the pins labeled “300MHZ.” (See Table 5-1 for
more information.)
10. Rotate the power supply back into position.
11. Replace the computer cover; reconnect your com-
puter 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 Microprocessor category correctly identi-
fies the installed microprocessor.
See Chapter 2, “Using the System Setup Program.”
13. Run the Dell Diagnostics to verify that the new
microprocessor is operating correctly.
See your Diagnostics and Troubleshooting Guide for
information on running the Dell Diagnostics and
troubleshooting any problems that may occur.
R
eplacing the System Battery
A 3.0-volt (V) CR2032 coin-cell battery installed on the
system board maintains system configuration, date, and
time information in a special section of memory.
The operating life of the battery can extend up to ten
years. The battery may need replacing if an incorrect time
or date is displayed during the boot routine along with a
message such as:
Time-of-day not set — please run SETUP
program
or
Invalid configuration information —
please run SETUP program
or
Strike the F1 key to continue,
F2 to run the setup utility
To determine whether the battery needs replacing, reenter
the time and date through the System Setup program (not
through the MS-DOS time and date commands) and exit
the program properly to save the information (see
Chapter 2, “Using the System Setup Program,” for
instructions). Turn off your system and disconnect it from
alternating current (AC) power for a few hours; then
reconnect and turn on your system. Enter the System
Setup program. If the date and time are not correct in the
System Setup program, replace your battery.
You can operate your system without a battery; however,
without a battery, the system configuration information is
erased if the system is turned off or unplugged from AC
power. In this case, you must enter the System Setup pro-
gram and reset the configuration options.
WARNING: There is a danger of the new battery
exploding if it is incorrectly installed. Replace the
battery only with the same or equivalent type rec-
ommended by the manufacturer. Discard used
batteries according to the manufacturer’s
instructions.