Adding, Removing, or Replacing an AC-Input Power Supply
Cisco 12008 Gigabit Switch Router Installation and Configuration Guide
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•The source end of the AC power cable is properly connected to the main
source AC circuit breaker.
•The main source AC circuit breaker servicing the AC-input power supply is
ON.
•The source AC voltage is within the range specified on the power supply
faceplate.
•When two AC-input power supplies are installed, each power cord is
connected to a separate AC power source.
Each AC power source must be on a dedicated circuit rated at 20A (for North
America) or 10 or 16A (for the International area).
Step2 Set the rotary power switch on the newly-installed power supply to the ON
position.
Step3 Observe the behavior of the green AC INPUT OK LED on the power supply
faceplate for the following conditions:
•The AC INPUT OK LED illuminates if the source AC voltage is within the
proper operating range (see the label on the power supply faceplate).
•If the green AC INPUT OK LED fails to illuminate, determine if
(a) The source AC circuit breaker is on.
(b) The source AC power cord is securely connected from the source AC
circuit breaker to the AC receptacle on the power supply faceplate.
•If the AC INPUT OK LED illuminates as expected, proceed to Step4.
•If the AC INPUT OK LED fails to illuminate after power is applied to the
unit, contact a Cisco service representative for assistance.
Step4 Observe the behavior of the red OUTPUT FAIL LED on the power supply
faceplate after you apply power to the unit. This LED should flash on
momentarily, then go off and remain so.