Troubleshooting; Chapter 51 Troubleshooting; Power, Hardware Connections, And Leds - ZyXEL Communications XS1920 Series User Manual

This chapter offers some suggestions to solve problems you might encounter. The potential
problems are divided into the following categories.
•

Power, Hardware Connections, and LEDs

• Switch Access and Login
• Switch Configuration
51.1 Power, Hardware Connections, and LEDs
The Switch does not turn on. None of the LEDs turn on.
Make sure you are using the power adaptor or cord included with the Switch.
1
Make sure the power adaptor or cord is connected to the Switch and plugged in to an appropriate
2
power source. Make sure the power source is turned on.
Disconnect and re-connect the power adaptor or cord to the Switch.
3
If the problem continues, contact the vendor.
4
The ALM LED is on.
Disconnect and re-connect the power adaptor or cord to the Switch.
1
If the problem continues, contact the vendor.
2
One of the LEDs does not behave as expected.
Make sure you understand the normal behavior of the LED. See
1
Check the hardware connections. See
2
Inspect your cables for damage. Contact the vendor to replace any damaged cables.
3
C
HAPTER
Section 51.1 on page
XS1920 Series User's Guide
369

Troubleshooting

Section 3.3 on page
369.
5 1
29.