3Com Router 3012 Installation Manual

3Com Router 3012 Installation Manual Manual pdf 49 page image

5 TROUBLESHOOTINGThe Power LED is Off. If the power LED is off, verify that:■ The power switch of the router is turned on.■ The power supply switch is turned on.■ The power cord of the router is connected properly.■ The power supply suits the requirement of the router.CAUTION: Do not plug in or unplug the power cord when the power is on. Afterhaving checked the conditions in the previous list, if the power LED is still off,contact your Service representative.Nothing is Displayedon the Terminal afterPower-OnAfter the system runs the power-on self-test (POST), if the system operatesnormally, the start-up information is displayed on the console terminal. If theconfiguration system has a fault, the terminal may display nothing.If the terminal does not display any information after the POST, verify that:■ The power system is operating normally.■ The console cable is connected correctly.If the power system is normal and the console cable is connected properly, theremay be something wrong with the console cable or the HyperTerminalparameters. Check the cable or the parameters.HyperTerminal parameters should have the following values:■ Baud — 9600■ Data bits — 8■ Stop bit — 1■ Parity — None■ Flow control — None■ Terminal emulation — VT100If the parameter settings do not match these values, reconfigure them.If the previous checks do not solve the problem, contact your Servicerepresentative and follow the representative’s instructions.