NEC POWERMATE 5100 - SERVICE, Руководство по обслуживанию

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Troubleshooting 8-7
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 (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.
“Invalid Configuration” message
displayed. 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 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, disc, or hard disk) for bad
boot track or incorrect OS files.
3. Try booting OS from diskette or disc, or
recopy OS files onto hard disk.
4. Verify 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, riser
board, and power supply.
2. Check diskette drive cable. Replace as
necessary.
3. Check power supply.
4. Replace diskette drive.
5. Replace riser board.
6. Replace system board.
Hard drive
malfunction Hard drive lamp does not light but
hard drive can be accessed. 1. Check cable connections between lamp
and system board.
Hard drive controller failure
message displayed. 1. Check that the IDE channel and hard
drives are enabled in Setup (see Section 2).