Cisco 10720 Configuration Guide - Page 169
AC OK, AC Power Supply LEDs, Table 5-1
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Chapter 5 Maintaining the Cisco 10720 Internet Router Figure 5-50 AC Power Supply LEDs AC OK AC OK DC OK DC OK OTF OTF AC OK DC OK OTF Removing and Installing the AC or Dual DC Power Supply 66445 The AC power supply LEDS provide status information. (See Table 5-1.) Table 5-1 AC Power Supply Status LEDs LED AC OK DC OK OTF (Over Temp Failure) Activity Solid Green Off Solid Green Off Amber/Red Solid Green Off Description The AC 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. 78-13062-10 Cisco 10720 Internet Router Installation and Configuration Guide 5-47