Canon PIXMA MP640 User manual

Network Setup Troubleshooting

Network Setup Troubleshooting
This manual mainly describes problems you may encounter when setting up a network, and the possible
causes and solutions.
Find a description related to your problem and follow the solution.
If you cannot nd a description for your problem or if you encounter a problem after setup, refer to the on-
screen manual: Basic Guide/Advanced Guide.
Names of functions, etc. may differ from this manual depending on your network device (router, access
point, etc.) or application software.
•
The following symbols are used in this manual.
Description for Windows users.
Description for Macintosh users.
Instructions as notes for operation or additional explanations.
Other Troubleshooting Tips
The Target Access Point is Not Displayed (Detected) P.1
P.1
Failed to connect to the access point. is Displayed P.2
Forgotten or Do Not Know the Access Point Name/Network Name (SSID), Security
Protocol (encryption standard), and Network Key
The Machine is Not Displayed (Detected)
Cannot connect. Multiple access points are enabled. is Displayed
Connection failed. is Displayed
Access point was not detected is Displayed
P.4
P.4
P.3
The Machine is Not Detected after the Network Environment is Changed
P.6
P.6
Connection Checklist P.11
Multiple access points with the same name exist. is Displayed
P.3
P.4
P.4
P.5Check Printer Settings dialog box is displayed
Problems during Network Setup
Problems during Software Installation
Reference Information
Specifying the Machine's IP Address (IPv4 only) P.9
P.7
Restoring the Machine's Default LAN Settings to Perform Setup Again P.10
WPS Settings
Easy Settings
P.6
Entering the Access Point's Wireless LAN Settings Directly on the Machine P.7
Specications P.13
Description for wireless connection.
Description for wired connection.

1
A
Problems during Network Setup
Check
The Target Access Point is Not Displayed (Detected)
Make sure that you follow Check 1, 2, 5 and 6 of
"Connection Checklist" on page 11, then press the left
FUNCTION button (A) on the machine to search for the
access point again.
Unplug the access point from the power outlet and plug it in,
wait for a while, then press the left FUNCTION button (A) on
the machine to search for the access point again.
Is SSID broadcast (connection via "ANY" SSID, etc.)
disabled or is the stealth mode 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.
•
Enable SSID broadcast (connection via "ANY" SSID, etc.)
or disable the stealth mode, then press the left FUNCTION
button (A) on the machine to search for the access point
again.
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.
•
To establish a connection without changing the access point settings, refer to "Entering
the Access Point's Wireless LAN Settings Directly on the Machine" on page 7.
Check 3
Check 2
Check 1
Easy Settings
Is the MAC address ltering enabled on the access point?
Set the access point to accept the MAC address of the
machine.
Check 4
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.
•
To check the MAC address of the machine, press the HOME
button, then using the Easy-Scroll Wheel and OK button, select
Settings > Device settings > LAN settings > Conrm LAN
settings > Wireless LAN setting list, then check MAC address.
•
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.
•
Is "WPA/WPA2 Enterprise" set as a security protocol (encryption standard) on the
access point?
Check 5
"WPA/WPA2 Enterprise" is not supported on the machine.
Change the security protocol (encryption standard) for the access point, then congure
settings again.
For details on how to change the security protocol (encryption standard) for the access point, refer
to the manual supplied with the access point or contact its manufacturer.
•
For the procedure to congure settings of the machine, refer to "Wireless Setup" on page 22 in the
printed manual: Getting Started.
•
SSID•
An identier to identify the specic access point.
An access point's periodic transmission of a signal revealing its SSID.
Stealth mode•
A function to hide SSID in wireless connection.
SSID broadcast•
Glossary
A function to block access from unauthorized wireless devices by saving the MAC addresses of specic
wireless devices (computers, printers, etc.) to the access point beforehand.
MAC address ltering•
A unique number assigned to each network device.
MAC address•

2
Check
Glossary
DHCP function•
A function that automatically assigns required information (IP address, etc.) to computers connected to
the Internet.
Failed to connect to the access point. is Displayed
Check 1
Is WEP key number 2, 3 or 4 of the access point in use?
For details on how to check the WEP key number of the access
point, refer to the manual supplied with the access point or
contact its manufacturer.
•
Set to use WEP key number 1 of the access point, or select
a WEP key number by entering wireless connection settings
of the machine directly.
For details on how to change the WEP key number of the access point, refer to the manual
supplied with the access point or contact its manufacturer.
•
For details on how to select a WEP key number by entering wireless connection settings of the
machine directly, refer to "Entering the Access Point's Wireless LAN Settings Directly on the
Machine" on page 7.
•
Check 2
Make sure that the DHCP function of the access point is active.
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.
•
Enable the DHCP function of the access point, then congure settings again.
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.
•
Are you using an access point that automatically creates WEP keys?
Check the WEP key (hexadecimal) created automatically on the access point, then enter
it on the machine.
For details on how to check the WEP key of the access point, refer to the manual supplied with the
access point or contact its manufacturer.
•
Check 3
For details on the access point, refer to the manual supplied with the access point or contact its
manufacturer.
•

3
Check
Multiple access points with the same name exist. is Displayed
The message appears when multiple access points with the
same name are found.
Select Use multiple APs.
When you have only one access point
For details on how to check the MAC address of the access
point, refer to the manual supplied with the access point or
contact its manufacturer.
•
Select Use one AP only, then select the MAC address of
the target access point.
When using multiple access points
Glossary
A unique number assigned to each network device.
MAC address•
For subsequent operations, go to step in "Entering the Access Point's Wireless LAN Settings
Directly on the Machine" on page 7.
•
For subsequent operations, go to step in "Entering the
Access Point's Wireless LAN Settings Directly on the Machine"
on page 7.
•
Check
Access point was not detected is Displayed
The message appears when no access point is found.
Refer to "The Target Access Point is Not Displayed
(Detected)" on page 1.

4
AA
Action
Check
Cannot connect. Multiple access points are enabled. is Displayed
The message appears when multiple access points are
detected.
Check the access point settings, then congure WPS
settings again.
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 message appears when an error occurs.
Connection failed. is Displayed
Wait for a while, then congure the settings again.
For the procedure to congure WPS settings of the machine, refer
to "Wireless Setup Using WPS (Wi-Fi Protected Setup)" on page
26 in the printed manual: Getting Started.
•
When using an access point that does not support WPS, congure settings manually. For the
procedure to congure settings of the machine manually, refer to "Wireless Setup" on page 22 in
the printed manual: Getting Started.
•
WPS Settings
Check
The Machine is Not Displayed (Detected)
Is the machine connected to a network?
For details on how to check if the machine is connected to a network, refer to "Conrm Connection
Status" on page 32 in the printed manual: Getting Started.
•
For a wireless connection, make sure that you follow Check 1, 2, 3, 4, 5 and 6 of
"Connection Checklist" on page 11, then click Update (A).
Check 2
Check 1
If the machine is not connected to a network, perform setup again by following the
procedures in "Wireless Setup" on page 22 and onward or "Wired Setup" on page 29
and onward in the printed manual: Getting Started.
Check 3
Problems during Software Installation
Is the IP ltering feature enabled on the network device (router, access point, etc.)?
Set the network device to accept the IP address of the machine.
For details on how to check settings of the network device, refer to the manual supplied with the
network device or contact its manufacturer.
•
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 > Conrm LAN
settings > Wireless LAN setting list or Wired LAN setting list, then check IP address.
•
For a wired connection, make sure that you follow Check 1, 2, 3, 7 and 8 of "Connection
Checklist" on page 11, then click Update (A).

5
A
Check
Check Printer Settings dialog box is displayed
The message appears when the machine cannot be
detected.
Is the machine connected to a network?
For details on how to check if the machine is connected to a network, refer to "Conrm Connection
Status" on page 32 in the printed manual: Getting Started.
•
For a wireless connection, make sure that you follow
Check 1, 2, 3, 4, 5 and 6 of "Connection Checklist" on
page 11, then click Back (A).
Check 1
Check 2
Proceed with the setup.
If the machine is not connected to a network, perform setup again by following the
procedures in "Wireless Setup" on page 22 and onward or "Wired Setup" on page 29
and onward in the printed manual: Getting Started.
Is the IP ltering feature enabled on the network device (router, access point, etc.)?
Check 3
For details on how to check settings of the network device, refer to the manual supplied with the
network device or contact its manufacturer.
•
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 > Conrm LAN
settings > Wireless LAN setting list or Wired LAN setting list, then check IP address.
•
Is the privacy separator feature enabled on the access point?
Disable the privacy separator feature.
Check 5
Check 4
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.
•
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.
•
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 Update (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.
•
Glossary
A function to control trafc to/from specic IP addresses.
IP address ltering•
A function to prevent communication between multiple wireless devices connected to an access point.
Privacy separator feature•
DHCP function•
A function that automatically assigns required information (IP address, etc.) to computers connected to
the Internet.
(* Wireless connection only) For a wired connection, make sure that you follow Check
1, 2, 3, 7 and 8 of "Connection Checklist" on page 11, then
click Back (A).

6
Is the privacy separator feature enabled on the access point?
Disable the privacy separator feature.
Check 5
Check 4
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.
•
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.
•
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.
•
Glossary
A function to control trafc to/from specic IP addresses.
IP address ltering•
A function to prevent communication between multiple wireless devices connected to an access point.
Privacy separator feature•
DHCP function•
A function that automatically assigns required information (IP address, etc.) to computers connected to
the Internet.
Check
Check
Other Troubleshooting Tips
The Machine is Not Detected after the Network Environment is Changed
IP address•
A numerical identication assigned to each computer or network device connected to a network.
Glossary
Wait until the IP address is assigned to the computer. You may need to restart your
computer.
Search for the machine again after conrming a valid IP address is assigned to the computer.•
Forgotten or Do Not Know the Access Point Name/Network Name
(SSID), Security Protocol (encryption standard), and Network Key
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.
•
(* Wireless connection only)

7
5
6
7
1
2
3
4
Select Directly enter the access point name, then
press the OK button.
If you are living in an apartment, nearby access points in use
may be detected.
•
Enter the access point name/network name (SSID)
using the Easy-Scroll Wheel, then press the OK button.
For details on how to check the access point name/network
name (SSID), refer to the manual supplied with the access
point or contact its manufacturer.
•
Enter the same access point name/network name (SSID) as
that of the access point on the machine.
•
Enter upper and lower case letters of the alphabet correctly. Letters are case sensitive.•
Go to either of the following steps according to the selected
security protocol.
•
Disable
WEP
WPA/WPA2
Select a security protocol for the access point, then
press the OK button.
When WEP 40 bit is selected in AirPort Utility (AirPort Admin Utility), select WEP (64 bit).•
When WEP (Transitional Security Network) is selected in AirPort Utility, select WEP (128
bit) or WPA2-PSK (AES).
•
Use the Easy-Scroll Wheel to select the character. Use the ]
button to move the cursor to the right.
Action
Reference Information
Select Easy settings, then press the OK button.
Select Yes, then press the OK button.
Select Wireless LAN setup, then press the OK button.
Use the Easy-Scroll Wheel to select Settings, then
press the OK button.
Enter the access point name/network name (SSID) and security setting (WEP, WPA,
etc.) on the machine directly.
Follow the procedure below.
When wireless connection is enabled, the Wi-Fi lamp lights
blue.
•
Entering the Access Point's Wireless LAN Settings Directly on the
Machine

8
8-A 8-B
9
4
3
1
2
3
1
2
WEP
Make sure that the network key is correct, then
press the OK button.
Enter the network key, then press the OK button.
Enter upper and lower case letters of the alphabet
correctly when the key input format is characters.
Letters are case sensitive.
Letters are not case sensitive if the format is
hexadecimal.
•
Select the network key format.
Select Characters when the network key is 5 or 13
characters.
Select Hexadecimal when it is 10 or 26 characters
(digits).
•
Select the WEP key number you want to use,
then press the OK button.
Make sure that the network key is correct, then
press the OK button.
Select the network key format.
Select Characters when the network key is between
8 and 63 characters.
Select Hexadecimal when it is 64 characters (digits).
•
Enter the network key, then press the OK button.
Enter upper and lower case letters of the alphabet
correctly when the key input format is characters.
Letters are case sensitive.
Letters are not case sensitive if the format is
hexadecimal.
•
When the completion screen appears, press the OK
button.
The Settings screen returns.
When using AirPort, select WEP key 1 in the
screen. Selecting other key numbers will disable the
connection between the machine and AirPort.
•
WPA/WPA2
WPA/WPA2
Disable
Disable