Troubleshooting The Power Subsystem - Cisco Router 7204 Installation And Configuration Manual

Chapter 5 Troubleshooting the Installation
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Troubleshooting the Power Subsystem

Check the following to help isolate a problem with the power subsystem:
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OL-5101-01
The RJ-45 link LED comes on only when the Fast Ethernet's RJ-45 port is receiving a carrier
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signal from the network. This LED remains off during normal operation of the router unless
there is an incoming carrier signal, and does not indicate startup problems.
If this LED remains off when starting the router, it is probably a problem with the Fast Ethernet
port on the I/O controller. Proceed to the
page 5-6 .
An MII link LED is not provided on the I/O controller because the LED is provided on
Note
external transceivers that are required for connecting to the MII port on the I/O controller.
Refer to the "Fast Ethernet Connection Equipment" section on page 3-16
"Installing the Cisco 7204"
– The slot 1 and slot 2 LEDs only come on when either PCMCIA slot is being accessed by the
system. These LEDs remain off during normal operation of the router and do not indicate startup
problems.
The enabled LED on each port and service adapter comes on when the network processing engine
completes its initialization of the adapter for operation. The enabled LED indicates that the adapter
is receiving power and has been recognized by the network processing engine; it does not indicate
the state of the individual interfaces on the port adapters (service adapter do not have interfaces). If
an enabled LED fails to come on, proceed to the section "Troubleshooting the Port Adapters" later
in this chapter.
When all LEDs come on to indicate that the system has booted successfully, the initial system
banner should be displayed on the console screen. If it is not displayed, refer to the
Auxiliary Port Connection Equipment" section on page 3-14
Cisco 7204" to verify that the terminal is set correctly and that it is properly connected to the I/O
controller's console port.
On the first power supply, is the power OK LED on?
– If yes, the power source is good, and the power supply is functional.
If no, make sure the power cable is connected at both ends.
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If the power OK LED remains off, and the power switch is set correctly, suspect the power
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source or the power cable. Turn the switch off, connect the power cable to another power source,
if available, and turn the switch back on. If the LED comes on, the problem is the first power
source.
– If the power OK LED fails to come on after you connect the power supply to a new power
source, replace the power cord, and turn the switch back on. If the AC power (or input power)
LED then comes on, return the first power cable for replacement.
– 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 power OK LED on for the second (redundant) power supply?
If yes, proceed to the section
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"Troubleshooting the I/O Controller" section on
for Fast Ethernet MII connection requirements.
"Troubleshooting the Processor
Cisco 7204 Installation and Configuration Guide
Troubleshooting the Power Subsystem
in Chapter 3,
"Console and
in Chapter 3, "Installing the
Subsystem."
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