Cisco 7513, Cisco 7513-Mx, And Cisco 7576 Power Supply Leds - Cisco 7500 Series Configuration Manual

Chapter 8 Troubleshooting a Cisco 7500 Series Router
R E V I E W D R A F T — C I S C O C O N F I D E N T I A L
In systems with a single DC-input power supply, and in systems with redundant power, when both power
supplies are shutting down, the out fail LED goes on momentarily as the system ramps down, but goes
out when the power supply has completely shut down. In systems with redundant power where one power
supply is still active, the out fail LED on the failed power supply will remain on (powered by the active
supply).
The AC-input and DC-input power supplies are self-monitoring. Each supply monitors its own
temperature and internal voltages. (For detailed descriptions of the show commands that display
temperature and voltage information, see the
Command Examples" section on page

Cisco 7513, Cisco 7513-MX, and Cisco 7576 Power Supply LEDs

There are two types of power supplies for the Cisco 7513, Cisco 7513-MX, and Cisco 7576: AC-input
and DC-input. Each power supply contains the following LEDs: AC (or DC) OK, fan OK, and output
fail.
Figure 8-11
The green AC (or DC) OK LED indicates that the power supply is turned on and is receiving input power.
The red output fail LED is normally off but goes on if the power supply shuts down for any of the
following reasons:
•
•
The green fan OK LED is on to indicate the fan in the power supply is operating properly. This LED is
useful in noisy environments when you are troubleshooting a potential power supply problem and it is
difficult to differentiate the sound of one power supply's fan from another.
OL-5008-03 B0
Figure 8-11 shows the AC-input power LEDs, and
AC-Input Power Supply LEDs (Cisco 7513, Cisco 7513-MX, and Cisco 7576)
A C
F A N
O U TP U T
O K
O K
F A IL
LEDs
AC power
receptacle
Power
switch
Power supply DC-output section failure, which could be caused by loss of AC power (input line
failure or operator turned off system power) or an actual failure in the power supply
Power supply shutdown initiated by the power supply because it detected an out-of-tolerance
temperature or voltage condition in the power supply
"Cisco 7507 and Cisco 7507-MX Environmental show
2-29.)
Figure 8-12
AC
FA N
OK OU TPU T
OK
FA IL
Captive
installation
screw
Cisco 7500 Series Installation and Configuration Guide
Using Cisco 7500 Series System LEDs
shows the DC-input power LEDs.
Power supply
front panel
8-25