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Diagnostics
One beep indicates that the system has completed its POST test. If intermittent beeping occurs,
power off the system and try again. If the beeping persists, see the following table. The table
summarizes problems that may develop during system operation and lists (in sequential order)
suggested corrective actions.
Problem
Symptom
No power
Power lamp on computer
front panel does not light.
Power supply
Any of the following
malfunction
conditions could occur.
Front panel lamps out,
diskette and/or hard drives do
not spin, monitor blank,
interface ports not working,
and keyboard lamp out and/or
cannot input from keyboard.
Operating system
Intermittent beeping at power-
does not boot
on. Computer beeps more
than once and is unable to
complete boot-up.
"Invalid Configuration"
message displayed.
7-6 Troubleshooting
Problems and Solutions
Solution
1.
Check that the power cord is plugged into the
power socket on the computer and into a live,
properly grounded AC power outlet.
2.
Check cable connections between the power
supply and system board and between the system
board and power switch.
3.
Systematically eliminate possible shorted
PCBs by removing cables and expansion boards.
4.
Check +5 and +12 power supply voltages.
Measure voltages with system board installed.
5.
Replace the power switch assembly.
6.
Replace the power supply.
7.
Replace the system board.
1.
Perform steps 1 through 4 listed in this table
under No Power.
2.
Check power supply voltages. Voltages
should be measured with a load on them (system
board plugged in).
3.
Replace the power supply.
1.
Check system configuration (see Section 2).
2.
Check all jumper settings and verify that
drives are enabled (see Section 2).
3.
Reseat DIMMs and option boards in their
connectors. Inspect system board for foreign
objects such as paper clips.
4.
Remove option boards and reboot.
5.
Replace system board.
1. Press F2 to run Setup and correct the
parameters.
2. Replace the CMOS battery (see Section 3) if the
date and time must be set each time the system is
powered on.
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