User manual

56
www.digiop.com
APPENDIX G: SERVER HARDWARE TROUBLESHOOTING
Diagnostic LEDs Power Button LED Problem Description Troubleshooting Steps
A possible system board
failure has occurred.
Unplug the computer. Allow one minute for the power to drain.
Plug the computer into a working electrical outlet and press the
power button.
A possible system board,
power supply, or peripheral
failure has occurred.
Power o computer, leaving the computer plugged in. Press and
hold the power supply test button at the rear of the power supply
unit. If the LED next to the switch illuminates, the problem may
be with your system board.
If the LED next to the switch does not illuminate, disconnect all
internal and external peripherals, and press and hold the power
supply test button. If it illuminates, there could be a problem
with a peripheral.
If the LED still does not illuminate, remove the PSU connections
from the system board, then press and hold the power supply
button. If it illuminates, there could be a problem with the
system board.
If the LED still does not illuminate, the problem is with the
power supply.
Memory modules are de-
tected, but a memory power
failure has occurred.
If two or more memory modules are installed, remove the mod-
ules, then re-install one module and re-start the computer. If the
computer starts normally, continue to install additional memory
modules (one at a time) until you have identied a faulty module
or reinstalled all modules without error. If only one memory
module is installed, try moving it to a dierent DIMM connector
and re-start the computer.
If available, install veried working memory of the same type
into your computer.
A possible CPU or system
board failure has occurred.
Replace the CPU with a known good CPU. If the computer still
fails to boot, inspect the CPU socket for damage.
BIOS may be corrupt or
missing.
The computer hardware is operating normally but the BIOS may
be corrupt or missing.
A possible system board
failure has occurred.
Remove all peripheral cards from the PCI and PCI-E slots and
re-start the computer. If the computer boots, add the peripheral
cards back one by one until you nd the bad one.
Power connector not installed
properly.
Re-seat the 2x2 power connector from the power supply unit.
Possible peripheral card or
system board failure has
occurred.
Remove all peripheral cards from the PCI and PCI-E slots and
re-start the computer. If the computer boots, add the peripheral
cards back one by one until you nd the bad one.
A possible system board
failure has occurred.
Disconnect all internal and external peripherals, and re-start the
computer. If the computer boots, add the peripheral cards back
one by one until you nd the bad one.
If the problem persists, the system board is faulty.
A possible coin cell battery
failure has occurred.
Remove the coin cell battery for one minute, reinstall the battery,
and restart.