Cisco Systems OL-11497-03 manual

Models: OL-11497-03

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Chapter 4 Troubleshooting the Installation

Problem Solving with Subsystems

If the AC power source wiring 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. The AC portion of the power supply is working normally, 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 power supply is working normally, go to Step 6. The original power supply is faulty and should be returned for replacement.

Step 6 Is the power supply DC LED on?

If Yes, the power supply is functioning normally. This is the end of the procedure.

Note In a Cisco 12006 or Cisco 12406 Router with two power supplies, the output power from the second power supply is adequate to maintain router operation, so the following check conditions only apply in a router with one power supply—or in a case where the second power supply is temporarily disabled by switching it off.

If No, and there is no other system activity (blower module is off; line cards are unpowered), the power supply is faulty and must be replaced. Go to Step 7.

If No, but the blower module is operating, suspect a faulty power supply DC LED. If the blower module is operating, all internal DC voltages are within tolerance. Use the show environment command to check the voltages on each card. The blower module uses –48 VDC.

 

 

Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide

 

 

 

 

 

 

OL-11497-03

 

 

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Page 213
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Cisco Systems OL-11497-03 manual