125, Eliminate Sources of Interference | Lexmark S500 SERIES, 3EN

•Streaming video

•Too many computers on the wireless network at once

ELIMINATE SOURCES OF INTERFERENCE

Common household items can potentially disrupt wireless network communications. Cordless phones (but not cellular phones), microwave ovens, baby monitors, almost any kitchen appliance, wireless surveillance equipment, nearby wireless networks, and any appliance containing a motor can disrupt wireless network communications.

Try turning on any potential sources of interference and see if it causes the problem. If it does, separate your wireless network from the device.

CHANGE THE CHANNEL THE WIRELESS ROUTER USES

You can sometimes eliminate interference from unknown sources by changing the channel your wireless router uses to broadcast. There are three distinct channels on a router. Check the documentation that came with your router to determine which three apply. Other channels are offered as options, but these overlap. If the router is configured to use the default settings, change the channel setting to use a different distinct channel. Refer to the manual that came with your wireless router if you are not sure how to change the channel.

CONFIGURE THE WIRELESS ROUTER WITH A UNIQUE SSID

Many wireless networks use the SSID that the router was originally configured by the manufacturer to use. Using the default SSID can cause problems when more than one network is operating in the same area with the same SSID. The printer or computer may attempt to attach to the wrong network, although it will appear to be trying to connect to the correct network.

To avoid this type of interference, change the SSID on your wireless router from the default. Refer to the manual that came with your router if you are not sure how to change the SSID.

Note: You must change the SSID on all of the other devices that access your wireless network if you change the SSID on the router.

ASSIGN STATIC IP ADDRESSES TO ALL DEVICES IN THE NETWORK

Most wireless networks use a DHCP server (dynamic host configuration protocol) built in to the wireless router to assign IP addresses to clients on the wireless network. DHCP addresses are assigned when they are needed, as when a new device is added to the wireless network or when it is powered on. Wireless devices must send a request to the router, and receive an IP address in response so they can function on the network. Because the router performs many other tasks besides assigning addresses, it sometimes does not respond quickly enough with an address. The requesting device sometimes gives up before it receives an address.

Try assigning static IP addresses to the devices in your network to resolve this issue. Static IP addresses cut down on the work your wireless router has to do. Refer to the manual that came with your router and your operating system documentation if you are not sure how to assign static IP addresses.

To assign a static IP address to the printer, do the following:

1Complete the wireless setup, allowing the printer to receive a DHCP address from a DHCP server on the network.

2Print a network setup page to see what IP address is currently assigned to the printer.

3Open a Web browser and then type the printer IP address in the address field. Press Enter. The printer Web page loads.

Troubleshooting

125 3EN, S500 SERIES, 31N, 30P, 30E specifications

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