Network User’s Guide for C3400n and C3530 MFPTroubleshooting - 33TROUBLESHOOTINGThe network addresses used in this manual are examples only. Networkaddresses used in your installation must be generated from your ownnetwork.SELF-DIAGNOSTIC TESTPRINTER DOES NOT PRINT> Check that your printer is switched on.> Check the printer status.> Ensure that the printer is connected to your computer.NG IS PRINTED IN THE SELF-DIAGNOSTIC TESTIf NG is printed in the self-diagnostic test or a Flash ROM Check Registers NG:1. Turn the printer off for 15 seconds and then on again.2. Press the reset button, located close to the Network Interface Panel atthe back of your printer, to re-initialize it.TCP/IPCOMPUTER CANNOT FIND THE NETWORK INTERFACE CARDCarry out the following procedures to verify the printer settings:> Turn the printer off for 15 seconds and then on again.> Confirm the network interface is enabled on the printer.> Check there is a response to the PING command.> Ensure that the network cable is correctly connected and that thegreen LED close to the printer’s network interface is lit. If not, changethe cable and try again.> Run the “Self-diagnostic test” on page 7.> Check the IP Address, Subnet Mask and Gateway are correct.> Ensure that the TCP/IP protocol is set to Enable.> Reset the network interface card to factory default settings.> If DHCP, BOOTP and RARP are not used, ensure they have been set toDisable.