NEC SP B-Series - Manual (Page 72)

4-6 Maintenance and Troubleshooting
Problems and Solutions
Problem Symptom Solution
Computer halts during loading
sequence. Power the computer off. Check for proper
jumper settings, then power on the
computer.
Check condition of selected bootload
device (diskette or hard drive) for bad boot
track or incorrect OS files.
Try booting OS from diskette or recopy OS
files onto hard drive.
Verify correct hard drive is selected.
Diskette drive does not
work Lamp on drive panel does not
light when diskette is loaded. Check power and signal cable connections
between diskette drive, system board, and
power supply.
Check diskette drive jumpers.
Check diskette cable. Replace as
necessary.
Check power supply.
Replace diskette drive.
Replace system board.
Hard drive malfunction Hard drive lamp does not light
but hard drive can be accessed. Check cable connections between lamp
and system board.
Hard drive controller failure
message displayed. Check that the IDE port and hard drives
are enabled in Setup.
Cannot access the hard drive. Check signal/power connections between
hard drive, system board, and power
supply.
Check hard drive jumper settings.
Check power supply.
Check hard drive cable and hard drive.
Replace as necessary.
Replace system board (or hard disk
controller board if the system board
controller is not used).
Memory malfunction Total memory not recognized. Reseat DIMMs.
Systematically swap DIMMs.
Check to see if the DIMM configuration is
valid (see Section 3, “Option Installation”).
Replace DIMMs.
Replace system board.