NEC PowerMate 466M, Руководство по обслуживанию

Страница: 107 / 184

Maintenance and Troubleshooting 4-7
Table Section 4-3 Problems and Solutions
Problem Symptom Solution
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.
2 . Check all jumper settings and
verify that drives are enabled (refer
to Section 2).
3 . Reseat SIMMs 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 the
F2
key to run Setup
and correct the parameters.
2 . Replace the 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 jumper settings (see
Section 2), then power-on the
computer.
2 . Check condition of selected
bootload device (diskette or hard
disk) for bad boot track or incorrect
OS files.
3 . Try booting OS from diskette or
recopy OS files onto hard disk.
4 . Verify the correct hard disk is
selected.
Diskette drive does
not work Lamp on drive panel does not light
when diskette is loaded.
1 . Check power and signal cable
connections between diskette drive,
system board, and power supply.
2 . Check diskette drive jumpers
(see Section 3).
3 . Check power supply and replace
diskette cable.
4 . Replace diskette drive.
5 . Replace system board.