Power Problems - IBM System x3850 X6 Installation And Service Manual

Power problems

Use this information to solve power problems.
Table 50. Symptoms and user actions for power problems
v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v See Chapter 5, "Parts listing, System x3850 X6 and x3950 X6 Types 3837 and 3839," on page 205 to determine
which components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v 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.
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. If not, complete the following step:
1) Check the power supply LEDs and address any power fault issues.
b. Press the power-on button to attempt to restore power.
c. Attempt to restore power remotely.
1) If this action restores power to the server, replace the front operator
panel.
d. 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.
Chapter 4. Troubleshooting
191