NEC Direction SP E-Series Reference Manual page 63

Problem
Diskette drive does not
work
Hard drive malfunction
Memory malfunction
4-6 Maintenance and Troubleshooting
Problems and Solutions
Symptom
Computer halts during loading
sequence.
Lamp on drive panel does not
light when diskette is loaded.
Hard drive lamp does not light
but hard drive can be accessed.
Hard drive controller failure
message displayed.
Cannot access the hard drive.
Total memory not recognized.
Solution
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.
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.
Check cable connections between lamp
and system board.
Check that the IDE port and hard drives
are enabled in Setup.
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).
Reseat DIMMs.
Systematically swap DIMMs.
Check to see if the DIMM configuration is
valid ( see "Option Installation").
Replace DIMMs.
Replace system board.