Troubleshooting The Power Subsystem - Cisco SCE8000 Installation And Configuration Manual

Chapter 8 Troubleshooting

Troubleshooting the Power Subsystem

Check the following to help isolate a problem in the power subsystem. In the normally configured Cisco
SCE8000 platform with redundant power supply units, it is unlikely that the device will not start at all.
However, at startup it should be verified that both power supply units are operational, and therefore the
following steps should be followed if the Power LED on the front panel remains unlit when the Cisco
SCE8000 platform is powered up.
If the system powers off due to an environmental shutdown, wait at least one minute before manually
Note
rebooting the system, or it will pause indefinitely.
Figure 8-2 Troubleshooting the Power Subsystem
Symptom
Power LED on the front
panel and LEDs on the
power supply unit are not lit,
or do not remain lit
continuously.
OL-16478-03
If any of the following warning messages appear, and the root cause is not obvious and easily solved
(such as obstruction of external air-flow) turn the Cisco SCE8000 platform off and call technical
support.
voltage problem
–
– fans problem
– abnormal raise in interior temperature
Possible Cause
Power cable not fully seated at system.
Power cable not fully seated at source.
Power source is faulty.
Faulty power cable.
Faulty power supply.
Possible Solution
Turn the power switch to the off position and reseat
the power cable in the system.
Turn the switch to the off position and reseat the
power cable at the power source.
Turn the switch to the off position, connect the
power cable to another power source, if available,
and turn the switch back on.
Turn the switch to the off position, remove the cable
and replace it.
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 unit is
probably faulty. Contact a service representative.
Cisco SCE8000 Installation and Configuration Guide, Rel 3.1.7
Troubleshooting Overview
8-7