4-10 Maintenance and Troubleshooting
Table 4-2 Problems and Solutions
Problem
Symptom
Solution
Power supply
malfunction
Any of the following conditions
could occur:
Front panel lamps out, hard
drive does not spin, monitor
blank, interface ports not
working, and keyboard lamp
out and/or cannot input from
keyboard.
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).
See Appendix A for connector pin
assignments and Section 1 for power
supply specifications.
3. Replace the power supply.
Operating system
does not boot
Intermittent beeping at power-
on. Computer beeps more than
once and is unable to complete
boot-up.
1. Check system configuration (see
Section 2).
2. Check all jumper settings and verify
that drives are enabled (see appendices
and Section 2).
3. Reseat DIMMs and option boards in
their connectors. Inspect system board
for dropped objects.
4. Remove option boards and reboot.
5. Replace system board.
“Invalid Configuration”
message displayed.
1. Press
F2
to run Setup and correct the
parameters.
2. Replace the CMOS battery if the date
and time must be set each time the
computer is powered on.
Computer halts during loading
sequence.
1. Power the computer off. Check for
proper system jumper settings (see
Appendix B), then power-on the
computer.
2. Check condition of selected bootload
device (network server or hard disk) for
bad boot track or incorrect OS files.
3. Verify boot load device (network
server or hard disk) is enabled in the
BIOS Setup utility.
4. Use NEC Select Install CD to restore
OS files using the OS Restore program
(see “NEC Select Install CD” in
Section 2).
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