Canon PIXMA E474 - Manual (Page 272)

Network Settings (IJ Network Device Setup Utility) (Windows)
Check4 Make sure the printer is not placed too far away from the wireless router.
Place the wireless router and printer where there are no obstacles between them. Wireless communication
between different rooms or floors is generally poor. Wireless communication can be impeded by building
materials containing metal or concrete. If the printer cannot communicate with the computer over a wireless
LAN due to a wall, place the printer and the computer in the same room.
In addition, if a device like a microwave oven that emits radio waves of the same frequency bandwidth as a
wireless router is nearby, it may cause interference. Place the wireless router as far away from interference
sources as possible.
Note
• Though an antenna is attached to most wireless routers, note that some of them have it inside.
Check5 Make sure wireless signal is strong. Monitor signal status and move printer
and wireless router as necessary. (Windows)
Checking Wireless Network Status
Check6 Make sure you are using a valid channel.
Usable wireless channels may be limited depending on wireless network device used by your computer. See
the instruction manual provided with your computer or wireless network device to check usable wireless
channels.
Check7 Make sure channel set on wireless router is a usable channel as confirmed in
Check 6.
If it is not, change the channel set on the wireless router.
Check8 Make sure security software's firewall is off.
If your security software's firewall is on, a message may appear warning you that Canon software is attempting
to access the network. If this warning message appears, set security software to always allow access.
If you are using any programs that switch between network environments, check their settings. Some
programs use a firewall by default.
Check9 If printer is connected to an AirPort Base Station via LAN, use alphanumeric
characters for network identifier (SSID). (Mac OS)
If the problem is not resolved, redo setup.
• For Windows:
Use the Setup CD-ROM or follow the instructions on the Canon website.
• For Mac OS:
Follow the instructions on the Canon website.
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