Instruction manual

1. Components Overview
70
(3) AC power connector
(4) Main power switch
(2) Panel layout
The front layout and back layout are shown in Figure 1-74 Front layout and Figure 1-75
Back layout, respectively. The numbers in the figure correspond to those in Table 1-36
LED indications, switches and connectors.
Figure 1-74 Front layout
Figure 1-75 Back layout
Table 1-36 LED indications, switches and connectors
Nu
mb
er
Name
Type
Description
Details
(1)
POWER
Green LED
Indicates the power supply
status.
Lit in green: Powered-on. Electrical power is
output to the mounted power supply
modules.
Off: Input power failure to the EPU or
powered-off.
(2)
DC-OK
Green LED
Indicates the power output
status from the power
supply modules.
Lit in green: Normal output from the power
supply modules.
Off: Output power failure from the power
supply modules or powered-off.
(3)
DC-FAIL
Red LED
Indicates the power output
status from the power
supply modules.
Lit in red: Output power failure from the
power supply modules.
Off: Normal output from the power supply
modules or powered-off.
(4)
AC-OK
Green LED
Indicates the power input
status to the power supply
modules.
Lit in green: Normal input to the power
supply modules.
Off: Input power failure to the power supply
modules or powered-off.
(5)
EPU 1
Connector
Standby power connector 1
To output electrical power from the power
supply module mounted in slot 1.
Connect the standby power cable bundled
with the EPU to the standby power
connector on the back face of the switch.