Canon imageCLASS MF247dw imageCLASS MF249dw/MF247dw/MF236n User Guide - Page 580

Troubleshooting Faxing/Telephone Problems See Common Problems(P. 564) also. Sending Problems(P. 572) Receiving Problems(P. 573) Sending Problems 1469-09H A fax cannot be sent. ● Is an external phone line busy? Wait until the line becomes free. ● Has an error occurred? Print and check a Communication Management Report. Communication Management Report(P. 611) ● Is a telephone line set correctly? Connecting the Telephone Line(P. 112) ● When sending the fax overseas, insert pauses in the fax number. Sending Faxes(P. 114) A fax cannot be sent with a destination in the history specified. ● Did you turn OFF the machine? If so, the stored history was deleted. ● Did you set to ? If so, the history before you set was deleted. ● Did you set to ? If so, the destinations in the history cannot be specified. A fax cannot be sent on an optical fiber line. ● The machine is compliant with use on analog lines. When using an optical fiber line or IP phone line, the machine may not work correctly depending on the connection environment or connected devices. In such a case, contact the provider of the optical fiber line or IP phone. The results of a sent fax are not satisfactory. ● Clean the platen glass or feeder. If cleaning does not improve the results, the recipient's fax machine may be a cause. Platen Glass(P. 590) Feeder(P. 593) 572