HP 100BaseT Guia do Utilizador descarregar pdf (Página 119)

Troubleshooting A-1

Appendix A: Troubleshooting

Diagnosing Hub Indicators

The HP 100Base-T Hub can be easily monitored through its

comprehensive panel indicators. These indicators assist the

network manager in identifying problems the hub may encounter.

This section describes common problems you may encounter

and possible solutions.

Symptom: /LQN indicator does not light up (green) after making a connection.

Cause: Network interface (e.g., a LAN adapter on the attached device),

network cable, or hub port is defective.

Solution: Check the power cord of both the hub and the attached device

and power source connections. If connections are secure then

try a different outlet, or try a different power cord to see if the

power cord is the problem. Be sure the network cable is plugged

into both the hub and corresponding device. Verify that the

proper cable type is used and its length does not exceed

specified limits (Chapter 2). Check the LAN adapter on the

attached device and cable connections for possible defects.

Replace the defective LAN adapter or cable if necessary. If the

problem persists, contact your HP-authorized reseller.

Symptom: 3RZHU indicator does not light up (green) after power on.

Cause: Defective power outlet, power cord, or internal power supply.

Solution: Check the power outlet by plugging in another device that is

functioning properly. Check the power cord with another

device. If these measures fail to resolve the problem, have the

unit’s power supply replaced by your authorized reseller.

Use the diagnostic procedures described in Chapter 2 and

Chapter 5 to verify that all other system components are

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HP 100BaseT Guia do Utilizador Página 119