Canon TS6420, Online Manual

Page: 234 / 342

Printer Suddenly Stopped Working for Some Reason
First, make sure printer is turned on. Next, make sure that you can view any web page on the Internet with
your computer. After confirming the two, use the IJ Network Device Setup Utility to diagnose and repair
network status.
Select the link below to download IJ Network Device Setup Utility and install it.
Checking Printer Connection Status Using IJ Network Device Setup Utility
See below for starting up IJ Network Device Setup Utility.
• For Windows:
Starting Up IJ Network Device Setup Utility
• For macOS:
Starting Up IJ Network Device Setup Utility
If the problem persists after diagnosis and repair with IJ Network Device Setup Utility, check the following
items.
Cannot Connect to a Printer after Network Configuration Changes
Cannot Connect to a Printer via Wireless LAN (Wi-Fi)
Cannot Connect to a Printer through Wireless Direct
Cannot Print/Scan through Network
Cannot Connect to a Printer after Network Configuration Changes
It may take a while for the computer to obtain an IP address, or you may need to restart your computer.
Make sure the computer has obtained a valid IP address, and try again to find the printer.
Cannot Connect to a printer via Wireless LAN (Wi-Fi)
Check1
Check the power status of printer, network devices (e.g. wireless router), and
smartphone/tablet.
• Turn on the printer or devices.
• If the power is already turned on, cycle the power switch.
• It may be necessary to resolve wireless router problems (e.g. update interval of a key, problems of DHCP
update interval, energy saving mode, etc.) or to update the wireless router firmware.
For details, contact the manufacturer of your wireless router.
234