ZyXEL 202H 91-003-194001B Manual Do Utilizador

P-202H Plus v2 User’s Guide

Chapter 36 Troubleshooting

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This chapter covers potential problems and the corresponding remedies.

Table 109   Troubleshooting Starting Up Your ZyXEL Device

None of the 

LEDs turn on 

when I turn on 

the ZyXEL 

Device.

Make sure that the ZyXEL Device’s power adaptor is connected to the ZyXEL Device 

and plugged in to an appropriate power source. Make sure that the ZyXEL Device and 

the power source are both turned on.
Turn the ZyXEL Device off and on.
If the error persists, you may have a hardware problem. In this case, you should 

contact your vendor.

Cannot access 

the ZyXEL 

Device via the 

console port.

1. Check to see if the ZyXEL Device is connected to your computer's console port.
2. Check to see if the communications program is configured correctly. The 

communications software should be configured as follows:

•

VT100 terminal emulation

•

9600 bps is the default speed on leaving the factory. Try other speeds in case the 

speed has been changed.

•

No parity, 8 data bits, 1 stop bit, data flow set to none.

Table 110   Troubleshooting the LAN

The LAN LEDs 

do not turn on.

Check your Ethernet cable connections (refer to the Quick Start Guide for details). 
Check for faulty Ethernet cables.

Make sure your computer’s Ethernet Card is working properly.

Cannot ping any 

computer on the 

LAN.

Check the Ethernet LEDs on the front panel. One of these LEDs should be on. If 

they are all off, check the cables between your ZyXEL Device and hub or the 

computer.

Verify that the IP address and the subnet mask of the ZyXEL Device and the 

computers are on the same subnet.