HP PtoLiant DL140 Setup And Installation Manual page 55

Table C-2: Front Panel Power On/Off 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 D, "LEDs and Switches."
Possible Reasons
There is no AC power connection.
The power on/off button was not firmly
pressed.
The power on/off 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.
HP ProLiant DL140 Server Setup and Installation Guide
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The Next Step
1.
2.
3.
4.
5.
6.
7.
Be sure the power cables are fully connected.
Press the power on/off button.
Be sure the power source is functioning.
Reconnect the power on/off button cable to the
system board.
Refer to Chapter 3, "Installing Hardware
Options," for the location of the power on/off
button connector.
Power down the server. Reseat all expansion
boards, DIMMs, processors, and PPMs. Reseat
all cable connections.
Refer to Chapter 3, "Installing Hardware
Options," for complete instructions.
Monitor the diagnostic LEDs on the system board
for failure conditions.
If these steps do not correct the problem, the
most likely cause lies either in the power supply
subsystem or a processor. Contact an authorized
service provider for further technical support.
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