Diskette Drive Activity Led Does Not Light; Hard Disk Drive Activity Led Does Not Light - NEC LS2400 User Manual

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Is the power connector for the cooling fan connected to
the system board?
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Is the front panel power on indicator lit?
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Is the cable from the front panel board connected to the
system board?
If the switches and connections are correct and the power
outlet is functioning, the power supply has probably failed.
Contact your service representative for assistance.

Diskette Drive Activity LED Does Not Light

Check the following:
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Are the diskette drive power and signal cables properly
installed?
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Is the diskette drive properly configured?
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Is the diskette drive activity light always on? If so, the
signal cable may be plugged in incorrectly.
If you are using the onboard diskette controller, use Setup
or the SSU to make sure that Onboard Floppy is set to
Enabled. Conversely, to use an optional fixed/diskette
controller, make sure that Onboard Floppy is set to
Disabled. For information about running Setup or the SSU,
refer to the "Configuring Your System" chapter.
If the problem persists, there may be a problem with the
diskette drive, system board, or drive signal cable. Contact
your service representative for assistance.

Hard Disk Drive Activity LED Does Not Light

If you have installed one or more hard disk drives in your
system, check the following:
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Are the power and signal cables to the drive properly
installed?
Problem Solving 5-17