●
Is the wireless router turned on?
If the problem persists even after checking the above:
●
Turn off the devices, and then turn them on again.
●
Wait for a while, and try again to connect to the network.
Check whether the machine is turned ON.
●
If the machine is turned ON, turn it OFF, and then turn it back ON.
Check the installation site of the machine and the wireless router.
●
Is the machine too far from the wireless router?
●
Are there any obstacles such as walls between the machine and the wireless router?
●
Are there any appliances such as microwave ovens or digital cordless phones that
emit radio waves near the machine?
Perform one of the following settings again.
Setting Up Connection Using WPS Push Button Mode(P. 138)
Setting Up Connection Using WPS PIN Code Mode(P. 140)
Setting Up Connection by Selecting a Wireless Router(P. 143)
Setting Up Connection by Specifying Detailed Settings(P. 146)
When you need to manually set up the connection
If the wireless router is set as described below, manually enter all the required information for the wireless LAN
connection ( Setting Up Connection by Specifying Detailed Settings(P. 146) ).
●
ANY connection refusal
*
is activated.
●
The WEP key that was automatically generated (hexadecimal) is selected.
●
The stealth mode is activated.
*
A function in which the wireless router refuses the connection if the SSID on the device to be connected is set to "ANY"
or is blank.
When you need to change the settings of the wireless router
If the wireless router is set as described below, change the settings of the router.
●
The MAC address packet filtering is set.
Troubleshooting
371
Summary of Contents for imageclass LBP251dw
Page 1: ...LBP252dw LBP251dw User s Guide USRMA 0786 00 2016 06 en Copyright CANON INC 2015 ...
Page 35: ...LINKS Using the Operation Panel P 30 Basic Operations 29 ...
Page 69: ...Exiting Sleep Mode Press any key on the operation panel Basic Operations 63 ...
Page 75: ...Printing 69 ...
Page 83: ...LINKS Basic Printing Operations P 70 Checking the Printing Status and Log P 78 Printing 77 ...
Page 117: ...LINKS Printing via Secure Print P 112 Printing 111 ...
Page 122: ...Checking the Printing Status and Log P 78 Printing 116 ...
Page 178: ...3 Click OK 4 Click Close LINKS Setting Up Print Server P 173 Network 172 ...
Page 233: ...LINKS Configuring Printer Ports P 168 Security 227 ...
Page 316: ...0 Auto Shutdown is disabled 1 to 4 to 8 hr Setting Menu List 310 ...
Page 355: ...Troubleshooting 349 ...
Page 470: ...Appendix 464 ...
Page 478: ...Manual Display Settings 0W20 08J Appendix 472 ...