Lenovo System x3850 X6 Installation And Service Manual page 202

Table 48. Symptoms and user actions for power problems
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See Chapter 5 "Parts listing, System x3850 X6 and x3950 X6 Type 6241" on page 201 to determine which
components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
• If an action step is preceded by (Trained service technician only), that step must be performed only by a
Trained service technician.
Symptom
The server will not start when
you press the power-on
button.
The server does not turn off
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System x3850 X6 and x3950 X6 Installation and Service Guide
Action
1. If the front information panel power-on button LED is on and blinking more than
once per second, complete the following steps:
a. Check the IMM event log to make sure that the power state matches the
power-on button LED.
b. Check to verify that the power supply ac power LED and dc power LED are
on and lit green. If not, complete the following:
1) Remove the ac power input to the server for 20 seconds and power-on
the server again.
2) If the power supply ac power LED is on and lit green, and the dc power
LED is off, no fault LEDs are on, and if the server has been recently
serviced or moved, reseat the standard I/O book.
2. If the front information panel power-on button LED is on and blinking
approximately once per second, complete the following steps:
a. Check the IMM event log for any power faults and to ensure that the power
state matches the power LED.
b. Check the power supply LEDs and address any power fault issues.
c. Press the power-on button to attempt to restore power.
d. Attempt to restore power remotely. If power is restored, replace the front
operator panel.
e. Remove ac power input to the server for 20 seconds and power-on the
server again.
3. If the front information panel power-on button LED is off, complete the following
steps:
a. Verify that ac power input is present by checking the ac power LEDs located
on each power supply.
b. Verify that the power supplies are producing dc power input by checking the
dc power LEDs on each power supply.
c. If the server has been recently serviced or moved, check that the standard I/
O book is seated properly.
The server will not power-off using the operating system or the power-on button,
complete the following steps:
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-on button and holding it down for
5 seconds.
c. Restart the server.
d. If the server fails POST and the power-on button does not work, disconnect
the ac power cord for 20 seconds; then, reconnect the ac power cord and
restart the server.