Configuring Printer Ports
Printing errors can occur when the IP address of the machine has been changed, or when a printer has been added via the Windows printer folder. These errors are typically caused by incorrect printer port settings. For example, an incorrect port number or port type may have been specified. In such situations, your attempt to print fails because the document data cannot reach the machine. To fix this type of problem, configure the printer port settings on the computer.
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To perform the following procedure, log on to your computer with an administrator account.
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Open the printer folder. Displaying the Printer Folder
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Right-click your printer icon and click [Printer properties] (or [Properties]).
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Click the [Ports] tab and configure the required settings.
Adding a port
If the IP address of the machine has been changed, add a new port. Adding a port is also an effective solution when an incorrect port type was selected in the Windows printer folder during the printer driver installation.
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Click [Add Port].
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Select [Canon MFNP Port] in [Available port types] and click [New Port].
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Click [Auto Detect], select the machine when it is detected, and click [Next].
  If the machine is not detected Click [Refresh]. If the problem persists, click [IP address] or [MAC address], enter the IP address or MAC address of the machine Viewing Network Settings, and then click [Next].
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Click [Add]
 [Finish]. |
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Click [Close].
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Changing the port type or number
If the printing protocols (Configuring Printing Protocols and WSD Functions) or port numbers (Changing Port Numbers) have been changed on the machine, the corresponding settings on the computer must also be configured. This change is only available for LPR or RAW ports.
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Click [Configure Port].
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Click the [LPR] or [RAW] radio button in [Protocol Type], change the number in the [Port Number] text box as necessary, and then click [OK].
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Click [Close].