Diskette Drive Activity Led Does Not Light; Hard Disk Drive Activity Led Does Not Light; Cd-Rom Drive Activity Light Does Not Light - NEC MC2200 User Manual

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Are the power connectors for the cooling fan module and fans connected to the
system board?
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Is the front panel power on indicator lit?
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's 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 RCU 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.
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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Is the optional disk controller board fully seated in the system board connector?
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Is the disk drive seated properly?
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Are the jumpers on the system board set correctly?
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Is the hard disk controller properly configured in the RCU?
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Is the hard disk activity LED cable connector plugged into the optional controller
board, if present?
If you received error messages, refer to the Error Messages section for information
about error messages.
If you did not receive error messages, run the RCU to make sure that the hard disk drive
is configured with the correct parameters. For information about running the RCU, refer
to Chapter 3, Configuring Your System.
If the problem persists, there may be a problem with the hard disk drive, the optional
controller board, system board, drive signal cable, or LED connector. Contact your
service representative for assistance.

CD-ROM Drive Activity Light Does Not Light

Check the following:
Problem Solving 5-9