Chapter 31 Troubleshooting; Using Leds To Diagnose Problems; The Power Led; The Lan Port Leds - ZyXEL Communications G-4100 V2 User Manual

This chapter covers potential problems and possible remedies. After each problem description,
some instructions are provided to help you to diagnose and to solve the problem.

31.1 Using LEDs to Diagnose Problems

The LEDs are useful aides for finding possible problem causes.

31.1.1 The Power LED

The PWR LED on the front panel does not light up.

Table 57 Troubleshooting Power LED

STEPS CORRECTIVE ACTION
1 Check the connection from the ZyXEL Device to the power source. Make sure you are
using the supplied power supply. Refer to the product specifications.
2 Make sure the power source is turned on and that the ZyXEL Device is receiving sufficient
power.
3 If these steps fail to correct the problem, contact your local distributor for assistance.

31.1.2 The LAN Port LEDs

None of the LEDs for the LAN port(s) light up when connected to an Ethernet device.

Table 58 Troubleshooting LAN LEDs

STEPS CORRECTIVE ACTION
1 Make sure the ZyXEL Device is turned on.
2 Verify that the attached device(s) is turned on and properly connected to the ZyXEL Device.
3 Verify that the Ethernet cable length does not exceed 100 meters.
4 Make sure the network adapters are working on the attached device(s).

Chapter 31 Troubleshooting

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