Netgear CSM4532 Hardware Installation Guide - Page 31

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 Problem Solution Power LED is off. 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 off.  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. PSU 1 & PSU 2 LED is in Possible issues: Red state.  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 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. NETGEAR M4500 Series Switches Hardware Installation Guide 31