Problem
l
System message indicates a problem with the microprocessor
l
Heat sink is not installed for the microprocessor
l
Fan is not operating properly
Action
1.
Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2.
Remove the cover (see "
Removing the Cover
").
3.
Lay the system on its right side.
4.
Ensure that the microprocessor and heat sink with cooling fan are properly installed (see "
Removing and Installing a Microprocessor
" in "Installing
System Options").
5.
Stand the system upright.
6.
Install the cover (see "
Installing the Cover
").
7.
Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
8.
Run
Quick Tests
in the system diagnostics (see "
Running the System Diagnostics
").
If the tests fail or the problem persists, see "
Getting Help
."
NOTE:
Microprocessors with an internal speed of less than 3.06 GHz use an active cooling heat sink. Microprocessors with internal speeds greater than
or equal to 3.06 GHz use a passive heat sink and plastic shroud.
CAUTION:
Before you perform this procedure, see "
Safety First
—
For You and Your System
."
CAUTION:
See "Protecting Against Electrostatic Discharge" in the safety instructions in your
System Information Guide
.
Troubleshooting the System Board
Problem
l
System message indicates a problem with the system board
Action
1.
Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2.
Remove the cover (see "
Removing the Cover
").
3.
Lay the system on its right side.
4.
Remove all expansion cards installed in the system (see "
Removing an Expansion Card
" in "Installing System Options").
5.
Stand the system upright.
6.
Install the cover (see "
Installing the Cover
").
7.
Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
8.
Run
Quick Tests
in the system diagnostics (see "
Running the System Diagnostics
").
If the tests fail, see "
Getting Help
."
CAUTION:
Before you perform this procedure, see "
Safety First
—
For You and Your System
."
CAUTION:
See "Protecting Against Electrostatic Discharge" in the safety instructions in your
System Information Guide
.
NOTE:
If the boot drive is connected to a SCSI or RAID controller card, remove all expansion cards except the controller card used by the boot
drive.