Chapter 4 Troubleshooting the Installation
Troubleshooting an AC Power Subsystem
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.
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