46 Network Switch Installation Guide
Components Replacement
Troubleshooting
Below is a list of the common problems that you may encounter when using the switch. Try to
solve these problems with the suggested solutions before calling for service. If problems persist,
contact customer support.
Diagnostic Switch Indicator
NOTE:
• InformationbelowisnotapplicableforT1048-P02Seriesmodels.
Problem Solution
Power LED is o.
The switch does not receive any power.
• Check if the AC power cords are connected properly.
• Check if the power supply units are completely seated in the
chassis.
• The power supply unit may be damaged and needs replacement.
A Port LED is o.
• Check if the switch and the connected device are powered on.
• Check if the connection in both ends are properly connected.
• Check if the cable matches the required length and specication.
• Check for a defective cable/port module.
PSU 1 & PSU 2 LED is
in Red state.
Possible issues:
• Fan Lock (15 sec.)
• OTP: Over Temperature Process
• OCP: Over Current Process
• OVP: Over Voltage Process
• UVP: Under Voltage Process
Fan LED is in Red
state.
One or more fans have failed.
Power and Cooling Problems
If the power indicator does not turn on when the power cord is plugged in, you may have a
problem with the power outlet, power cord, or power supply. However, if the unit powers o
after running for a while, check for loose power connections, power losses or surges at the power
outlet, and verify that the fans on the unit are unobstructed and running prior to shutdown. If
you still cannot isolate the problem, then the internal power supply may be defective.
Installation
Verify that all system components have been properly installed. If one or more components
appear to be malfunctioning (such as the power cord or network cabling), test them in an
alternate environment where you are sure that all the other components are functioning
properly.
In-Band Access
You can access the management agent in the switch from anywhere within the attached network
using Telnet, a Web browser, or other network management software tools. However, you must
rst congure the switch with a valid IP address, subnet mask, and default gateway. If you have
trouble establishing a link to the management agent, check to see if you have a valid network
connection. Then verify that you entered the correct IP address. Also, be sure the port through
which you are connecting to the switch has not been disabled. If it has not been disabled, then
check the network cabling that runs between your remote location and the switch.
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General