IBM Storwize V7000 Unified Problem Determination Manual page 69

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 85 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
AC DC Error
Off Off Off
Off Off On
Off On Off
Off On On
Description Action
No ac power to
1. Check the ac power to the server.
the server or a
2. Make sure that the power cord is
problem with the
connected to a functioning power
ac power source
source.
3. Turn the server off and then turn the
server back on.
4. If the problem remains, replace the
power supply.
No ac power to
1. Replace the power supply.
the server or a
2. Make sure that the power cord is
problem with the
connected to a functioning power
ac power source
source.
and the power
supply had
detected an
internal problem
Faulty power Replace the power supply.
supply
Faulty power Replace the power supply.
supply
Notes
This is a normal
condition when no
ac power is present.
This happens only
when a second
power supply is
providing power to
the server.
Chapter 3. Getting started troubleshooting
45