HP 5000 Router manual Troubleshooting, Power LED is Off

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5

TROUBLESHOOTING

The 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.

Do not plug in or unplug the power cord when the power is on. After having checked the conditions in the previous list, if the power LED is still off, contact your Service representative.

Nothing is Displayed on the Terminal after Power-On

After the system runs the power-on self-test (POST), if the system operates normally, the start-up information is displayed on the console terminal. If the configuration 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, there may be something wrong with the console cable or the HyperTerminal parameters. 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 — VT100

If the parameter settings do not match these values, reconfigure them.

If the previous checks do not solve the problem, contact your Service representative and follow the representative’s instructions.

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Contents Router 5000 Family Installation Guide Campus Drive 3Com CorporationMarlborough, MA 01752-3064Contents Troubleshooting Conventions About this GuideProtocols that are used to interconnect WANs List conventions that are used throughout this guideDocumentation RelatedIntroducing the Router Family Router 5000 Family Router 5000 Family Console Port SpecificationsHardware Fixed portsLists the attributes of the Router 5000 Family AUX port GroundLEDs Table below describes the LEDs on the Router Router 5232, 5642, 5682 LEDs Describes the LEDs on the Router 5232, 5642, 5682 routersFront View of the Router System Specifications for the RouterDescription Attribute Synchronous Asynchronous Synchronous/Asynchronous Serial Port SpecificationsRouter 5642 specifications Router 5232 specificationsRouter 5682 specifications System Specifications for the Router Introducing the Router 5000 Family Installing the Router Specification for Dust Content Temperature and HumidityDust GasesLightning Damage Electromagnetic DischargeA Rack Mounting the RouterConnecting the Power Installing the RouterConnecting the Router On the WorkbenchInstalling SICs and MIMs That uses category-5 twisted pair cable To the EthernetFixed Ethernet cables are supplied with the router Use shielded cables to ensure electromagnetic compatibilityPort to a CSU/DSU Connecting the AUX Port to the Analog ModemVerifying Installing the Router Connecting the Router to a Remote Console Terminal Booting and Configuring RouterConnector to the serial port of a PC, as shown below To a Local ConsoleParameters Console Terminal SettingTo set terminal parameters Shown belowParity None Stop bits Set the following parameters Bits per second 9600 Data bitsHyperTerminal Window Connect Dialog Box Powering on RouterConfiguration Startup ProcessFundamentals Router Configuration Fundamentals of the Router Ethernet Serial synchronous/asynchronous Asynchronous E1/T1 Naming and Arranging InterfacesBoot Menu Boot Menu Maintaining the RouterIntroduction Options of Boot ROM operation menu include Through XModemUpgrading application program Send File dialog box Restoring the Extended Segment of Boot ROM Program Upgrading the entire Boot ROM programRestore the extended segment of Boot ROM program from Flash Upgrading the extendedIntroduction Router restarts after successful upgrading Press Enter to reboot the systemBuild up FTP remote upload/download environment Build up FTP local upload/download environmentAdd right level Specify FTP directoryStart FTP server Ftpquit Cover Troubleshooting Power LED is OffNothing is Displayed on the Terminal after Power-On Repeated Reboot Power-OnIllegible Characters Display onRUN LED Remains On After Startup, All LEDs Remain OnRUN LED Blinks Rapidly During Sartup RUN LED Blinks Slowly After StartupTroubleshooting Signal Direction DB-25 DB-9 Cable SpecificationsConsole Cable Console Cable PinoutsEthernet Cable AUX CableSignal Twisted Pair Signal Direction Signal Category Signal DirectionStraight-through Network Cable Pinouts Crossover Network Cable PinoutsDTE and DCE Mode Serial Interface Cable Synchronous and Asynchronous ModeTypical DTE and DCE EIA/TIA-232 Maximum Transmission Baud rate bps Distance mPinouts DB-50 Signal Signal Direction DB-25Describes the V.24 DTE cable pinouts 24 DTE Cable PinoutsAssembly and Pinouts DCE Cable illustrates the V.24 DCE cable assemblyDescribes the V.24 DCE cable pinouts 24 DCE Cable PinoutsDB-50 Signal Signal Direction Describes the V.35 DTE cable pinouts35 DTE Cable Pinouts Describes V.35 DCE cable pinouts 35 DCE cable Pinouts DCE Cable illustrates the V.35 DCE cable assemblyE1 Cable Dumb Terminal AdapterT1 Cable Describes T1 cable pinoutsPin 4 and pin 5 are the receiving end Isdn cablesProduct Contact Us Warranty, you can obtain an RMA number online at PasswordNumber, URL or e-mail address from the list below Support telephone numbers posted on the 3Com web site atUS and Canada Telephone Technical Support and Repair Latin America Telephone Technical Support and RepairAppendix a Obtaining Support for Your Product