Understanding The Power Supply Unit Leds - IBM Storwize V7000 Unified Problem Determination Manual

Table 87. LED state descriptions used in the Storwize V7000 2076-524
enclosure (continued)
State
description
Flashing
Flashing fast
On
Flashing
Procedure
Complete the following steps to understand when a node canister is not
participating in the system, and what remedial action to take.
1. Identify the control enclosures for the system you are troubleshooting.
2. Use Table 88 to check the status of each power supply unit (PSU) in a control
3. If at least one PSU is providing power to a control enclosure, use Table 89 on
Table 88. Understanding the power supply unit LEDs
LED state
IN
ac power
Fault (amber)
(green)
On (any)
On
Off
Off
Note: The fourth status LED on the power supply unit is not used.
Detail
The LED turns on and off at a frequency of 2 Hz: It is on for 250 ms, then
off for 250 ms, then repeats.
The LED turns on and off at a frequency of 4 Hz: It is on for 125 ms, then
off for 125 ms, then repeats.
The LED is continuously lit.
The LED is lit to indicate some activity, then turns off. The rate and
duration that the LED is lit depends on the rate and duration of the
activity.
To understand which are the control enclosures, refer to the topic about
identifying the Storwize V7000 2076-524 enclosure or canister to service.
enclosure.
page 258 to check the status of each node canister in that enclosure.
dc
power
(green)
Replace the power supply unit, as described in "Replacing a
(any) Storwize V7000 Gen2 power supply unit for a control enclosure" on
page 305.
The power supply is functioning normally, providing power to the
On
enclosure.
Replace the power supply unit, as described in "Replacing a
Off Storwize V7000 Gen2 power supply unit for a control enclosure" on
page 305.
Replace the power supply unit, as described in "Replacing a
On Storwize V7000 Gen2 power supply unit for a control enclosure" on
page 305.
The power supply is not receiving power from the power outlet
through the power cord. To power on the system, connect the
Off
power supply to an outlet in use for the power cord and turn on
the power outlet.
Action
Chapter 5. Control enclosure
257