Cisco XR 12406 - Manual (Page 138)

Chapter 4 Troubleshooting the Installation
Troubleshooting an AC Power Subsystem
4-8
Cisco XR 12406 Router Installation Guide
OL-13831-01
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.
• Make sure that the AC power source circuit breaker is on and has not tripped,
and that the circuit breaker has the proper current rating.
• Verify that each power supply in the router is attached to a separate AC power
source.
• If the router is connected to an uninterruptable power supply (UPS), verify
that the UPS is functioning correctly.
Note There may be a UPS for each power supply in the system.
If the AC power source appears to be okay, but the power supply AC LED remains
off, go to Step
3 .
Step 3 Plug the power cord into a different, but compatible AC outlet.
• If the power supply AC LED goes on, the original AC outlet is faulty and
cannot be used. Notify the appropriate facilities personnel and go to Step
6 .
• If the power supply AC LED remains off, go to Step 4 .
Step 4 Exchange the existing power cord for another power cord.
• If the power supply AC LED goes on, the original power cord is faulty and
must be replaced. After replacing the power cord, go to Step
6 .
• If the AC LED still fails to go on when connected to a different power source
with a new power cord, the power supply is probably faulty. Go to Step
5 .
Step 5 If a spare power supply is available, replace the existing module with the spare
and restart the system.
• If the AC LED on the spare power supply goes on, the original power supply
is faulty and should be returned for replacement. Go to Step
6 .