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M440LX Server System Product Guide
207
Specific Problems and Corrective Actions
This section provides possible solutions for the following specific problems:
• Power light does not light.
• System cooling fans do not rotate or rotate slowly.
• No characters appear on screen.
• Characters on the screen appear distorted or incorrect.
• No beep or incorrect beep pattern.
• Diskette drive activity light does not light.
• Hard disk drive activity light does not light.
• Tape drive activity light does not light.
• The SCU does not boot.
• Problems with application software.
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:
❑ Is the system operating normally? If so, the power LED is probably
defective or the cable from the front panel to the system board is loose.
❑ Are there other problems with the system? If so, check the items listed
under "System Cooling Fans Do Not Rotate Properly."
❑ Is the yellow power supply failure LED flashing? If so, a power supply
has failed.
If all items are correct and problems persist, contact your service
representative or authorized dealer for assistance.