Other Troubleshooting Tips; The Machine Is Not Detected After The Network Environment Is Changed - Canon PIXMA MP640 Handbuch

Set the network device to accept the IP address of the machine.
• For details on how to change settings of the network device, refer to the manual supplied with the
network device or contact its manufacturer.
• To check the IP address of the machine, press the HOME button, then using the Easy-Scroll
Wheel and OK button, select Settings > Device settings > LAN settings > Confirm LAN
settings > Wireless LAN setting list or Wired LAN setting list, then check IP address.
Check 4
When obtaining an IP address automatically, make sure that the DHCP function of the
network device (router, access point, etc.) is active.
• For details on how to check settings of the network device, refer to the manual supplied with the
network device or contact its manufacturer.
Activate the DHCP function of the network device, then click Back (A).
• For details on how to change settings of the network device, refer to the manual supplied with the
network device or contact its manufacturer.
Check 5 (* Wireless connection only)
Is the privacy separator feature enabled on the access point?
• For details on how to check the settings of the access point, refer to the manual supplied with the
access point or contact its manufacturer.
Disable the privacy separator feature.
• For details on how to change the settings of the access point, refer to the manual supplied with
the access point or contact its manufacturer.
Glossary
• IP address filtering
A function to control traffic to/from specific IP addresses.
• DHCP function
A function that automatically assigns required information (IP address, etc.) to computers connected to
the Internet.
• Privacy separator feature
A function to prevent communication between multiple wireless devices connected to an access point.

Other Troubleshooting Tips

Forgotten or Do Not Know the Access Point Name/Network Name
(SSID), Security Protocol (encryption standard), and Network Key
Check
Check the access point settings.
• For details on how to check the settings of the access point, refer to the manual supplied with the
access point or contact its manufacturer.
The Machine is Not Detected after the Network Environment is
Changed
Check
Wait until the IP address is assigned to the computer. You may need to restart your
computer.
• Search for the machine again after confirming a valid IP address is assigned to the computer.
Glossary
• IP address
A numerical identification assigned to each computer or network device connected to a network.