NEC POWERMATE CT 815 - RELEASE NOTES, Инструкция по обслуживанию и справочник, Страница: 115 / 155

Troubleshooting 7-7
Problems and Solutions
Problem Symptom Solution
Operating system
does not boot
(cont’d) System halts during loading
sequence. 1. Power the system off. Check for proper
jumper settings (see Section 2), then power-on the
system.
2. Check the condition of the 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 and power supply.
2. Check diskette drive cable. Replace as
necessary.
3. Check power supply.
4. Replace diskette drive.
5. 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 drive are
enabled in Setup (see Section 2).
Cannot access hard drive. 1. Check signal/power cable connections
between hard drive, system board, power supply.
2. Reseat all hard drive cable connectors.
3. Check hard drive jumper settings.
4. Check power supply.
5. Check hard drive cable and hard drive.
Replace as necessary.
6. Replace system board.
Memory
malfunction Total memory not recognized. 1. Reseat DIMMs.
2. Systematically swap DIMMs.
3. Check to see if DIMM configuration is valid
(see Section 4).
4. Replace DIMMs.
5. Replace system board.