Troubleshooting
Table D-2: Front Panel Power-On/Standby LED Is Not On
WARNING: To reduce the risk of electric shock or damage to the equipment,
before opening access panels to reseat components, power down the server, and
then disconnect the power cord.
Note: For LED locations and functions, refer to Appendix E, “LED Indicators, Switches, and
Jumpers.”
Possible Reasons
The Next Step
There is no AC power connection.
The power button was not firmly pressed.
The power button connector cable is not
properly connected to the system board.
A processor has failed or is not properly seated.
The power supply has failed or is not
connected.
1. Check the power cables. Be sure that they
are fully connected.
2. Press the power button.
3. Check the power source.
Refer to the Servers Troubleshooting Guide
for further options.
4. Reconnect the power button cable to the
system board.
Refer to Chapter 1, “Server Features,” for
the location of the power button connector.
5. Power down the server. Reseat all
expansion boards, DIMMs, processors, and
PPMs, checking that all cables are securely
connected.
Refer to Chapter 3, ”Hardware Options
Installation,” for complete instructions.
Refer to the Servers Troubleshooting Guide
for tips on proper procedures.
6. Check the diagnostic LEDs on the system
board for failure conditions.
7. If these steps do not correct the problem,
the most likely cause lies either in the
power supply subsystem or a processor.
Contact your authorized service provider for
further technical support.
Refer to the Servers Troubleshooting Guide for
a list of authorized service providers.
HP ProLiant ML310 Server Setup and Installation Guide
D-7
HP CONFIDENTIAL
Writer: Ted Weiman File Name: k-appd.doc
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