Cisco 10720 Configuration Guide - Page 170

IN OK, Dual DC Power Supply LEDs, Table 5-2

Page 170 highlights

Removing and Installing the AC or Dual DC Power Supply Figure 5-51 Dual DC Power Supply LEDs IN OK IN OK DC DC OTF OTF IN OK DC OTF Chapter 5 Maintaining the Cisco 10720 Internet Router 57668 The dual DC power supply status LEDs provide status information. (See Table 5-2.) Table 5-2 Dual DC Power Supply Status LEDs LED IN OK DC OTF (Over Temp Failure) Activity Green Off Green Off Amber/Red Green Off Description The DC input voltages to both individual power supplies are within acceptable limits. Power is off. Both individual power supplies are functioning normally. Power is off. As a lamp test at power up, this LED comes up amber/red for approximately half a second. OR The power system overheated or one of the internal fans failed. The temperature of the corresponding individual power supply is within acceptable limits. (That is, the temperature is normal.) Power is off. 5-48 Cisco 10720 Internet Router Installation and Configuration Guide 78-13062-10

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5-48
Cisco 10720 Internet Router Installation and Configuration Guide
78-13062-10
Chapter 5
Maintaining the Cisco 10720 Internet Router
Removing and Installing the AC or Dual DC Power Supply
Figure 5-51
Dual DC Power Supply LEDs
The dual DC power supply status LEDs provide status information. (See
Table 5-2
.)
IN OK
DC
OTF
IN OK
DC
OTF
57668
IN OK
DC
OTF
Table 5-2
Dual DC Power Supply Status LEDs
LED
Activity
Description
IN OK
Green
The DC input voltages to both individual power supplies
are within acceptable limits.
Off
Power is off.
DC
Green
Both individual power supplies are functioning normally.
Off
Power is off.
OTF (Over Temp
Failure)
Amber/Red
As a lamp test at power up, this LED comes up amber/red
for approximately half a second.
OR
The power system overheated or one of the internal fans
failed.
Green
The temperature of the corresponding individual power
supply is within acceptable limits. (That is, the
temperature is normal.)
Off
Power is off.