Power problems
vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
vSee the parts listing in the Hardware Maintenance Manual to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.
Symptom | Action | |
The | 1. Make sure that the | |
not work, and the reset button | ||
a. Disconnect the server power cords. | ||
does work (the server does not | ||
b. Reconnect the power cords. | ||
start). | ||
Note: The | c. Press the | |
will not function until 20 | d. If the server does not start, disconnect the server power cords and reseat | |
seconds after the server has | ||
the operator information panel cables; then, repeat steps 1b through 1c. If | ||
been connected to ac power. | ||
the problem remains, replace the operator information panel. | ||
|
2.Make sure that:
v The ac power cord is correctly connected to the server and to a working electrical outlet.
vThe server contains the correct type of DIMMs.
vThe DIMMs are correctly seated.
v(Trained service technician only) The microprocessor is correctly installed.
3.If you just installed an optional device, remove it, and restart the server. If the server now starts, you might have installed more devices than the power supply supports.
4.Reseat the following components:
| a. DIMMs | |
| b. (Trained service technician only) | |
|
| components |
| c. (Trained service technician only) Power connector on the system board | |
| 5. Replace the following components one at a time, in the order shown, restarting | |
| the server each time: | |
| a. DIMMs | |
| b. (Trained service technician only) Power supply | |
| c. (Trained service technician only) System board | |
| 6. See “Solving undetermined problems” in the Hardware Maintenance Manual . | |
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The server does not turn off. | 1. Determine whether you are using an Advanced Configuration and Power | |
| ||
| Interface (ACPI) or a | |
| operating system, complete the following steps: | |
| a. | Press Ctrl+Alt+Delete. |
| b. Turn off the server by pressing the | |
| c. | Restart the server. |
| d. If the server fails POST and the | |
|
| disconnect the ac power cord for 20 seconds; then, reconnect the ac power |
|
| cord and restart the server. |
| 2. If the problem remains or if you are using an | |
| suspect the system board. | |
| ||
The server unexpectedly shuts Call for service. | ||
down, and the LEDs on the |
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operator information panel are |
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not lit. |
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Chapter 5. Solving problems 53