Canon PIXMA MX870 - Manual (Page 1094)

Advanced Guide > About Network Communication > Troubleshooting > Cannot Communicate With the Machine/Cannot
Print from the Machine
Cannot Communicate With the Machine/Cannot Print from the
Machine
Cannot Communicate with the Machine After Applying MAC/IP Address Filtering or Entering a WEP/
WPA/WPA2 Key to the Access Point
Cannot Communicate with the Machine After the Network Settings Are Changed
Cannot Connect to the Target Access Point
When Encryption Is Enabled, Cannot Communicate With the Machine After the Encryption Type Was
Switched on the Access Point
Cannot Communicate with the Machine with USB Connection
Cannot Communicate with the Machine over the Network
The Machine Cannot Be Detected in the Network
Cannot Communicate with the Machine After Applying MAC/IP Address Filtering or
Entering a WEP/WPA/WPA2 Key to the Access Point
Check 1: Confirm the access point setting.
Refer to the manual provided with the access point or contact its manufacturer to confirm the
access point setting. Make sure that the computer and the access point can communicate
with each other under this setting.
Check 2: If you are performing MAC address filtering at the access point, confirm
that the MAC addresses for both the computer or the network device and the
printer are registered.
Check 3: If you are using a WEP/WPA/WPA2 key, make sure that the key for the
computer or the network device and the printer matches that set to the access
point.
Besides the WEP key itself, the key length, key format, the key ID to use, and the
authentication method must match among the machine, the access point, and the computer.
Normally, select Auto for the authentication method. If you want to specify the method
manually, select Open System or Shared Key according to the setting of the access point.
How to Set a WEP/WPA/WPA2 Key
Cannot Communicate with the Machine After the Network Settings Are Changed
Wait until the IP address is assigned to the computer. You may need to restart your computer.
Search for the printer again after confirming a valid IP address is assigned to the computer.
Cannot Connect to the Target Access Point
Check 1: Make sure that the SSID/network name of the target access point and
the machine are identical.
For the procedures to connect an access point and set it up, refer to the manual of your
access point or contact its manufacturer.
For the procedures to set up the printer, see
Changing the Settings in the Wireless LAN
Sheet .
Check 2: Make sure that Wireless LAN active is selected in the Change wireless/
wired on the Operation Panel.
Changing the Machine Settings on the LCD
Page 1094 of 1127 pages Cannot Communicate With the Machine/Cannot Print from the Machine