Canon PIXMA MX340 Network Setup Manual page 13

Check 6
Are the access point and machine installed in an open space where wireless communications are possible? Also, is there a microwave oven, refrigerator, etc. nearby?
Install them in an open space with as few obstacles as possible.
Leave some space between the installation location and a microwave oven, refrigerator, etc. so that its radio waves will not affect those from the access point.
Check 7
Is the access point operating in IEEE802.11b or IEEE802.11g (2.4 GHz)?
• For details on how to check the operating mode of the access point, refer to the manual supplied with the access point or contact its manufacturer.
Set the access point to operate in IEEE802.11b or IEEE802.11g (2.4 GHz).
• For details on how to change the operating mode of the access point, refer to the manual supplied with the access point or contact its manufacturer.
Glossary
• Firewall
A system to use computers connected to the Internet and corporate networks safely. It protects computers and corporate networks against unauthorized access, or restricts unauthorized access to corporate
networks and the Internet.