3com 4005 Instruccion De Instalación
Troubleshooting a Power Supply
35
Troubleshooting a
Power Supply
Power Supply
If a power supply failure occurs under any condition, a message or trap is sent to
the SNMP management application. If you see this trap, or experience any other
problems with the power supplies, please refer to the following sections and
contact technical support personnel.
the SNMP management application. If you see this trap, or experience any other
problems with the power supplies, please refer to the following sections and
contact technical support personnel.
Diagnosing Switch
Indicators
If the AC LED on the power supply (see Figure 12 on page 33) does not light up
when the power cord is plugged in, you may have a defective power outlet, power
cord, or power supply. Check the power outlet by plugging in another device that
is functioning properly. Check the power cord with another device.
when the power cord is plugged in, you may have a defective power outlet, power
cord, or power supply. Check the power outlet by plugging in another device that
is functioning properly. Check the power cord with another device.
If the AC LED lights up but the DC LED does not light up when the power cord is
plugged in, you have a defective power supply.
plugged in, you have a defective power supply.
If you need further assistance, contact your technical support provider or 3Com
for assistance.
for assistance.
Intermittent Operation
If the chassis powers off after running for a period of time, check for loose power
connections, power losses or surges at the power outlet, and verify that the fans
on the back of the chassis are unobstructed and operating prior to shutdown. If
you still cannot isolate the problem, then the power supply may be defective. In
this case, contact your technical support provider or 3Com for assistance.
connections, power losses or surges at the power outlet, and verify that the fans
on the back of the chassis are unobstructed and operating prior to shutdown. If
you still cannot isolate the problem, then the power supply may be defective. In
this case, contact your technical support provider or 3Com for assistance.
Power Supply Failure
There are no user-serviceable parts on a power supply. Do not disassemble a
power supply and attempt to fix it. If a power supply fails, simply remove it as
described in this chapter and return the components to your supplier or 3Com.
Consult your purchase records so that you can determine if the incident occurred
during the warranty period.
power supply and attempt to fix it. If a power supply fails, simply remove it as
described in this chapter and return the components to your supplier or 3Com.
Consult your purchase records so that you can determine if the incident occurred
during the warranty period.