Lenovo x3250 m6, Installation And Service Manual

Page: 83 / 696

Power problems
Table 19. Power problems and actions
Symptom Action
The power-control button does
not work, and the reset button
does not work (the server does
not start).
Note: The power-control
button will not function until
approximately 20 seconds after
the server has been connected
to power.
1. Disconnect the server power cords.
2. Reconnect the power cords.
3. (Trained technician only) Reseat the operator information panel cable, and then
repeat steps 1a and 1b.
• (Trained technician only) If the server starts, reseat the operator information
panel. If the problem remains, replace the operator information panel.
• If the server does not start, bypass the power-control button by using the
force power-on jumper. See “System-board switches and jumpers” on page
22. If the server starts, reseat the operator information panel. If the problem
remains, replace the operator information panel.
4. Make sure that:
a. The power cords are correctly connected to the server and to a working
electrical outlet.
b. The type of memory that is installed is correct.
c. The DIMM is fully seated.
d. The LEDs on the power supply do not indicate a problem.
5. Reseat the following components:
a. DIMMs
b. (Trained technician only) Power-supply cables to all internal components
c. (Trained technician only) Power switch connector
6. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. DIMMs
b. Power supply
c. (Trained technician only) System board
7. If you installed an optional device, remove it, and restart the server. If the server
now starts, you might have installed more devices than the total devices that
power supply could support.
8. See “Power-supply LEDs” on page 54.
The server does not turn off. 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, do the following:
a. Press Ctrl+Alt+Delete.
b. Turn off the server by pressing the power-control button for five seconds.
c. Restart the server.
d. If the server fails the POST and the power-control button does not work,
disconnect the power cord for five 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.
The server unexpectedly shuts
down, and the LEDs on the
operator information panel are
not lit.
See “Solving undetermined problems” on page 72.
Chapter 5
.
Troubleshooting
69