Canon PIXMA MX850 Quick Start Guide - Page 170

Cause Action You are scanning thick or curled documents. Thick or curled documents may not be sent in good quality, because of a shadow or distortion caused when scanning such documents. Press on the Document Cover with your hand when scanning. „ Errors Often Occur When You Send a Fax Cause The telephone line condition or the connection is poor. Action If there is a poor line or connection, reducing the transmission start speed may correct the error. Reduce the transmission start speed. Refer to "TX start speed" in "Device Settings" of the User's Guide on-screen manual. Telephone Problems „ Cannot Dial Cause Action The telephone line is not correctly connected. The telephone line type is not set correctly. Check that the telephone line is connected correctly. Refer to your setup sheet or see "Preparing the Machine for Fax" on page 57. Check the telephone line type setting and change it as necessary. See "Setting the Telephone Line Type" on page 60. „ Telephone Disconnects During a Call Cause Action The telephone line or the telephone (or a peripheral device such as an external telephone, an answering machine, or a computer modem) is not connected correctly. Check that the telephone line and the telephone (or a peripheral device such as an external telephone, an answering machine, or a computer modem) are connected correctly. 166 Troubleshooting