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Cisco 7200 VXR Installation and Configuration Guide
OL-5013-09
Chapter 5 Troubleshooting the Installation
Troubleshooting the Processor Subsystem
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If the LED still fails to come on when the power supply is connected to a different power source
with a new power cable, the power supply is probably faulty. If a second power supply is
available, install it in the other power supply bay and contact a service representative for further
instructions.
• Is the PWR OK LED on for the second (redundant) power supply?
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If yes, proceed to the “Troubleshooting the Processor Subsystem” section.
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If not, repeat each of the preceding procedures for the second power supply.
If you are unable to resolve the problem or you determine that either a power supply or chassis connector
is faulty, contact a service representative for instructions.
Troubleshooting the Processor Subsystem
The processor subsystem comprises the I/O controller, network processing engine or network services
engine, and all port adapters. The I/O controller and network processing engine or network services
engine are required system components. The system cannot operate unless the I/O controller and
network processing engine or network services engine are installed properly; however, the system can
operate without any port adapters installed as long as none are in partial contact with the midplane pins.
A port adapter or Port Adapter Jacket Card that is partially connected to the midplane sends incomplete
signals to the processor, which faults the PCI bus and causes the system to hang. Therefore, first ensure
that the I/O
controller and the network processing engine or network services engine are installed
properly and the system software has initialized successfully. Then, if necessary, you can troubleshoot
individual port adapters.
Troubleshooting the I/O Controller
The procedures in this section assume that the I/O controller, network processing engine or network
services engine, and router itself are in the original factory configuration, and that you have not made
changes to your configuration file.
If the I/O controller LEDs do not go on as expected (see the “Identifying Startup Problems” section on
page 5-3), check the following items to help isolate the problem.
• Do all of the I/O controller LEDs remain off when the system power switch is
turned on?
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If the LEDs stay off, first see the “Troubleshooting the Power Subsystem” section on page 5-6
and the “Troubleshooting the Cooling Subsystem” section on page 5-10 to ensure that both the
fans and the power supply are functioning properly.
–
If the power supply and fans appear operational but none of the I/O controller LEDs are on,
suspect that an improperly connected I/O controller or port adapter has hung the system.
Tighten all captive installation screws, and then restart the system.
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With the power supply turned off, reseat the I/O controller in its slot and restart the router.
• Is the I/O controller ENABLED LED on?
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If yes, the system software has initialized successfully, and the system is operational.
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If the ENABLED LED remains off, the system detected a processor hardware failure. (This LED
should be on in normal operation.) Contact a service representative for instructions.
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