User manual

85
Power light does not light
Check the following:
• Did you press the power-on button?
• Is the system operating normally? If so, the power LED might be
defective or the cable from the front panel to the server board
might be loose.
• Have you securely plugged the server AC power cord into the
power supply?
• Is the power supply correctly set to 110V or 235V, depending on
your power output?
• Will other items plugged into the same power outlet function
correctly?
• Some ATX power supplies have a power switch on the back of the
power supply, next to the fan. If your system has one, is it turned
on?
• Remove all add-in cards and see if the system boots. If successful,
add the cards back in one at a time with a reboot between each
addition.
• Make sure the memory DIMMs comply with the system
requirements.
• Make sure the memory DIMMs have been populated according to
the system requirements.
• Remove the memory DIMMs and re-seat them.
• Make sure the processor(s) comply with the system requirements.
• Make sure the processor(s) have been populated according to the
system requirements.
• Remove the processor(s) and re-seat them.
• Make sure the chassis standoffs are installed only below mounting
holes. Misplaced standoffs can contact the pins on the bottom of
the server board and cause a short.