Changing the Maximum Transmission Unit
In most Ethernet networks, the maximum size of a packet that can be sent is 1500 bytes. A packet refers to a chunk of data into which the original data is divided before being sent. The maximum transmission unit (MTU) may vary on each network. Change the settings of the machine as necessary. For more information, contact your Network Administrator.
1
Select <Menu> in the Home screen. Home Screen
2
Select <Preferences> 
<Network>.
<Network>.If the login screen appears, enter the correct ID and PIN. Logging in to the Machine
3
Select <TCP/IP Settings> <MTU Size>.
<MTU Size>.4
Select the MTU.
5
Restart the machine.
Turn OFF the machine, wait for at least 10 seconds, and turn it back ON.