ZyXEL ES1100-16P User Guide - Page 20

CHAPTER 3 Troubleshooting This section describes common problems you may encounter with the Switch and possible solutions. Troubleshoot the Switch using the LEDs to detect problems. The PWR LED on the front panel does not light up. • Check the connections from your Switch to the power source. Make sure you are using the supplied power cord and that you are using an appropriate power source. Refer to the product specifications. • Make sure the power source is turned on and that the Switch is receiving sufficient power. • If these steps fail to correct the problem, contact your local distributor for assistance. The LINK/ACT LED does not light up when a device is connected. • Verify that the attached device(s) is turned on and properly connected to your Switch. • Make sure the network adapters are working on the attached devices. • Verify that proper network cable type is used and its length does not exceed 100 meters. For more information on network cable types, see Section 3.1 on page 21. The PWR LED is off and/or power is not being supplied to my PoE-enabled device. (For ES1100-8P and ES1100-16P) • Check to see that the power cord is securely connected to the ES1100-8P/16P and an appropriate power source. Make sure the power source is on and functioning properly. • Check that the Ethernet cables are connected properly and that you are using the correct type of Ethernet cable. Contact your local distributor if the problem persists. ES1100 Series User's Guide 20