NEC POWERMATE VE - SERVICE MANUAL 05-1996 Service Manual page 98

4-6 Maintenance and Troubleshooting
Problem
Operating system
does not boot
Diskette drive does
not work
Hard disk
malfunction
Table Section 4-2 Problems and Solutions
Symptom
Intermittent beeping at power-
on. Computer beeps more
than once and is unable to
complete boot-up.
"Invalid Configuration"
message displayed.
Computer halts during loading
sequence.
Lamp on drive panel does not
light when diskette is loaded.
Hard disk drive lamp does not
light but hard disk drive can
be accessed.
Hard disk controller failure
message displayed.
Solution
1. Check system configuration and jumper
settings (refer to Appendix B).
2. Verify that drives are enabled.
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.
1. Press F1 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.
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 correct hard disk is selected.
1. Check power and signal cable
connections between diskette drive,
system board, and power supply.
2. Check diskette drive jumpers.
3. Check power supply and replace
diskette cable.
4. Replace diskette drive.
5. Replace system board.
1. Check cable connections between lamp
and system board.
1. Check that the IDE port and hard disk
drives are enabled in Setup.