Cisco XR 12404 User Manual
Page 105
4-7
Cisco XR 12404 Router Installation Guide
OL-13830-02
Chapter 4 Troubleshooting the Installation
Troubleshooting an AC Power Subsystem
summarizes the function of these indicators.
The following conditions must exist for an AC PEM to operate normally:
•
The PEM is fully seated in its bay and the ejector levers are secured.
•
AC-input power is within the required range is correctly connected to PEMs.
•
The power switch on the PEM is switched on.
•
The green LEDs labeled OUTPUT OK and INPUT OK on the PEM are on.
To help isolate a problem with an AC-input power supply, follow these steps:
Step 1
If the OUTPUT OK LED is off, verify that the power supply is fully seated in its
bay, the ejector levers are flush with the power supply faceplate, and the captive
screws are secured.
•
If the OUTPUT OK LED is on, go to Step
•
If the OUTPUT OK LED remains off, go to Step
Step 2
Check the AC power source.
•
Check the AC power cord from the power source to the router.
–
Verify that the power cord is seated securely in the PDU and the AC
outlet.
–
Verify that the power cord is not worn or damaged. If the insulation
appears cracked or broken, or the plugs appear loose, replace the power
cord with a new power cord.
•
Verify that the AC power source circuit breaker is on and has not tripped, and
that the circuit breaker has the proper current rating.
Table 4-1
DC-Input PEM LED Indicators
LED Label
Color
Function
OUTPUT OK
Green
PEM is operating normally in a powered-on
condition.
INPUT OK
Green
DC power is present at the PEM input and
within the specified limits.
OUTPUT FAIL
Amber
Indicates a failure in the PEM.
todd.book Page 7 Monday, March 16, 2009 2:47 PM