NEC Express 5800/140Rb-4, Руководство по обслуживанию

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Verifying Proper Operation of Key System Lights
As POST determines the system configuration, it tests for the presence of each mass storage device
installed in the system. As POST checks each device, the activity light for that device should turn
on briefly. Check for the following:
Does the diskette drive activity light turn on briefly? If not, see “Diskette Drive Activity Light
Does Not Light” on page 95.
Does the hard disk drive activity light on the control panel turn on briefly? If not, see “Hard
Drive Activity Light Does Not Light” on page 95.
Confirming Loading of an Operating System
Once the system boots up, the operating system prompt appears on the screen. The prompt varies
according to the operating system. If the operating system prompt does not appear, see “Initial
System Startup” on page 91.
Specific Problems and Corrective Actions
This section provides possible solutions for these specific problems:
•
Power light does not light
•
No beep or incorrect beep pattern
•
No characters appear on the screen
•
Characters on the screen appear distorted or incorrect
•
System cooling fans do not rotate
•
Diskette drive activity light does not light
•
Hard drive activity light does not light
•
CD-ROM drive activity light does not light
•
Problems with applications software
•
The startup prompt “Press <F2> key if you want to run Setup” does not appear on the screen
•
The bootable CD-ROM is not detected
Try the solutions in the order given. If you cannot correct the problem, contact your service
representative or authorized dealer for assistance.
Power Light Does Not Light
Check the following:
Are all the power supplies plugged in? Is the power turned on to the power strip or outlet? Do
you have a blown fuse or breaker?
Is the system functioning normally? If so, the power LED might be defective, the cable from
the front panel to the fan carrier board might be loose, or the cable from the fan carrier board to
the baseboard might be loose.
Are there other problems with the system? If so, check the items listed under “System Cooling
Fans Do Not Rotate Properly” on page 95.
If all items are correct and problems persist, contact your service representative or authorized dealer
for assistance.
Solving Problems 93