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5-5
Cisco 7201 Installation and Configuration Guide
OL-11364-04
Chapter 5 Troubleshooting Initial Startup Problems
Problem Solving Using a Subsystems Approach
System does not
power on.
DC internal power cables are not
fully seated; from the power supply
to the system board, from the power
supply to the power switch, and the
power supply to the power
connector.
Turn the router power switch to the
standby position (|) and unplug the router
power cable. Open the cover and check
the power supply cable connections.
Reseat the cables if necessary. Replace
the cover, plug in the power cable, and
power on the router.
Power source is faulty.
Turn the power source switch off, connect
the power cable to another power source,
if available, and turn the router power
switch back on.
Faulty power cable.
Turn the router power switch to the
standby position (|), (for DC power, also
turn the circuit breaker to the off position
and tape it in that position), remove the
cable and replace it.
Faulty power supply.
If the system still fails to come up when
the power supply is connected to a
different power source with a new power
cable, the power supply is probably
faulty. Contact a service representative.
System powers off,
no STATUS LED,
and no operating
fans.
Power supply failure.
Contact a service representative.
Table 5-1
Troubleshooting the Power Subsystem (continued)
Symptom
Possible Cause
Possible Solution