DC power supply unit connectors and indicators
Each enclosure can contain two DC power supply units. Each power supply unit can provide power to the
whole enclosure.
The power supply units have the components that are shown in Figure 4 on page 17.
Figure 4. DC power supply unit connectors and indicators
1 Release tab
2 Handle
3 Power supply LED indicators
4 Direct current power connector
5 Cable retainer
Each power supply also contains fans that cool the enclosure. Cool air is drawn in through the front of the
enclosure. The air passes over the drives, node canisters, and power supplies. The warmed air is ejected
through the rear of each power supply. For optimal cooling, do not obstruct the airflow and ensure that all
enclosure components or llers are installed while the system is operational.
DC power supply LED indicators
Each power supply unit has four LED indicators. Table 19 on page 17 summarizes their possible values
and meaning.
The LEDs have a comparable meaning to the LEDs on the AC power supply. Problem diagnosis and service
procedures are the same. For details, see “Powering on the system” on page 68.
Table 19. DC power supply LED indicators
Name Label Color State Description
Input
status
Green OFF No input power detected.
ON DC input power detected.
Output
status
Green OFF PSU is not providing DC output power.
ON PSU is providing DC output power.
Fault Ambe
r
OFF No fault detected.
ON PSU fault was detected.
BLINK PSU is being identied. A fault might have been detected.
(None) Blue N/A Not used.
Chapter 3. Before you begin the installation 17
To Next Page
Loading...
Need help?
General
