IBM Storwize V7000, Problem Determination Manual

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The following table describes the problems that are indicated by various
combinations of the power-supply LEDs and the power-on LED on the operator
information panel and suggested actions to correct the detected problems.
Table 16. Power-supply LEDs
v
Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v If an action is preceded by “(Trained service technician only),” that action must be performed only by a
trained service technician.
v
Refer to “Removing and replacing parts” on page 81 to determine which components are customer replaceable
units (CRU) and which components are field replaceable units (FRU).
v
Go to the IBM support website at www.ibm.com/storage/support/storwize/v7000/unified to check for technical
information, hints, tips, and new device drivers, or to submit a request for information.
Power-supply LEDs
Description Action Notes AC DC Error
Off Off Off No ac power to
the server or a
problem with the
ac power source
1. Check the ac power to the server.
2. Make sure that the power cord is
connected to a functioning power
source.
3. Turn the server off and then turn the
server back on.
4.
If the problem remains, replace the
power supply.
This is a normal
condition when no
ac power is present.
Off Off On No ac power to
the server or a
problem with the
ac power source
and the power
supply had
detected an
internal problem
1. Replace the power supply.
2. Make sure that the power cord is
connected to a functioning power
source.
This happens only
when a second
power supply is
providing power to
the server.
Off On Off Faulty power
supply Replace the power supply.
Off On On Faulty power
supply Replace the power supply.
Chapter 3. Getting started troubleshooting
41