Canon printer imageCLASS MF236n User Manual

	Check whether SMTP is running on the network correctly.
	 Check whether the machine is properly installed and correctly connected to the network.
Installation/SettingsProblems(P.567)
WhencommunicatingwiththeSMTPserver,anerrorreturnedfromtheserver.
	Check whether the SMTP server is set correctly.
Adestinationisnotsetcorrectly.
	Check whether the destination is set correctly.
Whenstoringascanneddocumentintothesharedfolder,anerroroccurredfromthefolder.
	Check whether...

#810
WhencommunicatingwiththePOP3servertosende-mail,anerrorreturnedfromtheserver.	Check whether the POP3 server is set correctly.
	 Check  whether  your  mail  server  and  network  are  running  correctly.  For  more  information,  contact  your
Network Administrator.
#813
ThelogonnameorpasswordthatisusedonthePOP3serverisnotsetcorrectly.
	Correctly enter the logon name or password that is used on the POP3 server.
#839...

Con4gurLngE-MailCommunicationSettings(P.363)
WhenverifyingaTLSserver certL4catetocommunicatetothePOP3server,a verL4catLonerroroccurred.
	 Check that the CA  certi4cate that signed the TLS server  certi4cate on the POP3 server side is registered to
the machine by using the Remote UI.
VerifyingKeyPairsandDigital CertL4cates(P.446)
	 Check that the TLS server  certi4cate on the POP3 server side is valid.
	 Check that the TLS server  certi4cate is not a self-signed...

CommonProblems
1469-09C
If you encounter problems when using the machine, check the items in this section before contacting us. If the problems persist, contact your local authorized Canon dealer or the Canon help line.
Check the Following
IsthemachineturnedON?Isthepowercordconnected?
	 If the machine is turned ON but does not respond, turn it OFF, check whether the power cord is connected
correctly, and turn it back ON. For information on connecting the power cord, see Getting Started....

Installation/SettingsProblems
1469-09E
See 
CommonProblems(P.566)  also.
ProblemswiththeWireless/WiredLANConnection(P.567)
ProblemwiththeUSBConnection(P.570)
ProblemwiththePrintServer(P.570)
Problems with the Wireless/Wired LAN Connection
ThewirelessLANandwiredLANcannotbeconnectedatthesametime.
	 The wireless LAN and wired LAN cannot be connected at the same time. The following can be used at the
same time: a USB cable and a wireless LAN, or a USB cable and a wired...

YouareunsureofthesetIPaddress.ViewingNetworkSettings(P.344)
TheconnectionmethodcannotbeswitchedbetweenawiredLANanda
wirelessLAN. 	 Did you select a wired LAN or a wireless LAN on the operation panel on the machine as well? This selection is
required to have the machine switch to your selection.
SelectingWiredLANorWirelessLAN(MF249dw/MF247dw)(P.317)
YouareunsureoftheSSIDorthenetworkkeyofthewirelessroutertobe...

Iftheproblempersistsevenaftercheckingtheabove:
	 Turn off the devices, and then turn them on again.
	 Wait for a while, and try again to connect to the network. 
 
CheckwhetherthemachineisturnedON.
	 If the machine is turned ON, turn it OFF, and then turn it back ON. 
 
Checktheinstallationsiteofthemachineandthewirelessrouter.
	 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...

	When only IEEE 802.11n is used for the wireless communication, WEP is selected or the WPA/WPA2
encryption method is set to TKIP.
 
Problem with the USB Connection
 Cannotcommunicate.
	 Change the USB cable. If you are using a long USB cable, replace it with a short one.
	 If you are using a USB hub, connect the machine directly to your computer using a USB cable.
 
Problem with the Print Server
 Youcannot 4ndtheprintservertoconnectto.
	 Are the print server and computer connected...

Copy/PrintingProblems
1469-09F
See 
CommonProblems(P.566)  also.
Printing/copyresultsarenotsatisfactory.Papercreasesorcurls.WhenYou
CannotPrintProperly(P.576)
Youcannotprint.
	 Can you print a Windows test page? If you can print a Windows test page, there is no problem with the
machine or the printer driver. Check the print settings of your application.
PrintingaTestPageinWindows(P.671)
If you cannot print a test page, check the following according to your environment.
 Wireless...

	Have you selected the correct port? If there is no port to use, create a port.
CheckingthePrinterPort(P.674)
Con4gurLng PrinterPorts(P.351)
	 Is  communication  not  limited  by  the  4rewall  on  your  computer?  If  IP  addresses  are  or  an  MAC  address  is
incorrectly entered, you will be not able to access the machine. In that case, you need to use the operation
panel to set , , or  to .
RestrictingCommunicationbyUsingFirewalls(P.401)
IPv4AddressFilter(P.531)...