Cisco 7500 Series - Page 262

REVIEW DRAFT—CISCO CONFIDENTIAL
8-24
Cisco 7500 Series Installation and Configuration Guide
OL-5008-03 B0
Chapter 8 Troubleshooting a Cisco 7500 Series Router
Using Cisco 7500 Series System LEDs
Figure 8-9 AC-Input Power Supply LEDs (Cisco 7507 and Cisco 7507-MX)
The DC-input power supply LEDs include the input power LED and the out fail LED. See Figure 8-10.
The green input power LED is on when the input power is applied. The yellow out fail LED is normally
off but flashes at power on for a lamp test.
The out fail LED goes on if the power supply shuts down for either of the following reasons:
• Power supply DC-output failure, which could be caused by loss of DC-input power (input line
failure or operator turned off system power) or an actual failure in the DC-input 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
Figure 8-10 DC-Input Power Supply LEDs, Cisco 7507 and Cisco 7507-MX (Same Location as
AC-Input Power Supply)
I
O
D
C
F
A
IL
A
C
P
O
W
E
R
Power supply
front panel
On/off switch
AC power
receptacle
LEDs
Captive
installation
screw
Locking device
H1314a
DC FAIL
AC POWER
OUT FAIL
INPUT POWER
H2498