HP proliant ML110 Operation And Maintenance Manual page 74

System Maintenance
•
If the server is plugged into a switched multiple-outlet box, make sure the switch on the
outlet box is turned on.
•
Plug a different electrical device (such as a printer) into the power outlet, and turn on the
device to verify the outlet has power.
•
If you hear a series of beeps when you power on the server, count the number of beeps,
then go to the "POST Beep Codes" section in Chapter 7 for information on what it
indicates.
•
Verify that the problem is not caused by an internal device connection. Perform the
following steps:
1. Perform steps 1 through 3 of the pre-installation instructions listed in Chapter 4.
2. Remove the left-side cover as described in Chapter 4.
3. Verify that the power supply unit and the front panel power switch are firmly
4. Remove the power connectors of all internal devices.
5. Observe the post-installation procedures described in Chapter 4.
6. Press the power button again.
7. Check the status of the power indicator.
I/O Devices Problems
Video/Monitor Problems
The following conditions are indicative of a video/monitor problem:
•
The monitor's power indicator LED is on, but the monitor is blank.
•
The wrong size characters display on the monitor.
•
Colors are wrong or there are no colors on the monitor.
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connected to their corresponding mainboard connectors.
If it remains off, call your HP Customer Support provider for assistance.
If it lights up:
a. Reconnect the power connectors one by one to the internal devices to determine
which device or connection is defective.
Make sure that you disconnect the power cord before you reconnect each internal
device.
b. After reconnecting the device, turn the power on again.
c. If the green LED is still on, repeat this step with another device until you find the
device that prevents the power indicator from turning on.
d. Call your HP Customer Support provider with this information for further
instructions.
HP ProLiant ML110 Server Operations and Maintenance Guide