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The power button does not work (server does not start)
Note: The power button will not function until approximately 1 to 3 minutes after the server has been
connected to ac power.
Complete the following steps until the problem is resolved:
1. Make sure that the power button on the server is working correctly:
a. Disconnect the server power cords.
b. Reconnect the server power cords.
c. Reseat the operator information panel cable, and then repeat steps a and b.
• If the server starts, reseat the operator information panel.
• If the problem remains, replace the operator information panel.
2. Make sure that:
• The power cords are correctly connected to the server and to a working electrical outlet.
• The LEDs on the power supply do not indicate a problem.
3. Reseat the power supplies.
4. Replace each power supply, restarting the server each time:
• DIMMs
• Power supplies
5. If you just installed an optional device, remove it, and restart the server. If the server starts, you might
have installed more devices than the power supply supports.
Server does not power on
Complete the following steps until the problem is resolved:
1. Check the event log for any events related to the server not powering on.
2. Check for any LEDs that are flashing amber.
3. Check the power LED on the system board.
4. Reseat the power supply.
5. Replace the power supply.
Server does not power off
Complete the following steps until the problem is resolved:
1. Determine whether you are using an Advanced Configuration and Power Interface (ACPI) or a non-ACPI
operating system. If you are using a non-ACPI operating system, complete the following steps:
a. Press Ctrl+Alt+Delete.
b. Turn off the server by pressing the power button and holding it down for 5 seconds.
c. Restart the server.
d. If the server fails POST and the power button does not work, disconnect the power cord for 20
seconds; then, reconnect the power cord and restart the server.
2. If the problem remains or if you are using an ACPI-aware operating system, suspect the system board.
Processor problems
See this section to solve problems related to a monitor or video.
• "The server goes directly to the POST event viewer when it is turned on." on page 226
.
Chapter 5
Problem determination
225
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