https://community.usa.canon.com/t5/Office-Printers/MF6550-Printer/m-p/9975#M78 Requestor has since called Canon and got the answer very quickly. My printer cord had extension cord attached. Once I disconnected the extension and used only one cord to connect printer.<BR /><BR />Thanks Canon for fast,accurate response Fri, 04 Jan 2013 06:25:28 GMT masche 2013-01-04T06:25:28Z https://community.usa.canon.com/t5/Office-Printers/MF6550-Printer/m-p/9829#M76 <P><STRONG>MF6550 Printer scan operation will not start when I push scan button on machine. </STRONG></P><P>&nbsp;</P><P><STRONG>It will start when I access scan from toolbox. However, it only scans about 20% and then enters a long pause and never finishes the job.</STRONG></P><P>&nbsp;</P><P><STRONG>I did download the new driver for Windows 7.</STRONG></P> Thu, 03 Jan 2013 04:18:22 GMT https://community.usa.canon.com/t5/Office-Printers/MF6550-Printer/m-p/9829#M76 masche 2013-01-03T04:18:22Z https://community.usa.canon.com/t5/Office-Printers/MF6550-Printer/m-p/9975#M78 Requestor has since called Canon and got the answer very quickly. My printer cord had extension cord attached. Once I disconnected the extension and used only one cord to connect printer.<BR /><BR />Thanks Canon for fast,accurate response Fri, 04 Jan 2013 06:25:28 GMT https://community.usa.canon.com/t5/Office-Printers/MF6550-Printer/m-p/9975#M78 masche 2013-01-04T06:25:28Z