Instruction manual

1. Components Overview
29
Figure 1-29 Back view
(1) Power supply unit slot 2
(2) Power supply unit slot 1
(3) Ground terminal
NOTE
To build a redundant power supply system, insert power supplies into both power
supply unit slots 1 and 2.
Otherwise, insert a power supply unit into power supply unit slot 1 and a fan unit
into power supply unit slot 2.
(2) Front panel
The front panel layout is shown in Figure 1-30 Front panel layout. The numbers in the
figure correspond to those in Table 1-16 LED indications, switches and connectors.
Figure 1-30 Front panel layout
Table 1-16 LED indications, switches and connectors
Num
ber
Name
Type
Description
Details
(1)
PWR
Green LED
Indicates the power supply
status.
Lit in green: Powered-on.
Off: Powered-off or a failure with a power
supply unit.
(2)
ST1
Green/Red
LED
Indicates the device
status.
Lit in green: Standing by or operating.
Blinking green: Getting ready (starting up).
Blinking red: Partial failure with the switch
Lit in red: Fatal failure in the device
(operation cannot continue)
Off: Powered-off or a failure with a power
supply unit.
(3)
ST2
Green LED
(Not used)
Off