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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
Problem
Power LED is off.
A Port LED is off.
PSU 1 & PSU 2 LED is in
Red state.
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 off
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.
Components Replacement
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.
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
specification.
Check for a defective cable/port module.
Possible issues:
Fan Lock (15 sec.)
OTP: Over Temperature Process
OCP: Over Current Process
OVP: Over Voltage Process
UVP: Under Voltage Process
NETGEAR M4500 Series Switches Hardware Installation Guide 31
Solution
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