Is A Message Displayed On The Display?; Is The Telephone Line Connected Or Configured Properly?; If You Cannot Solve A Problem - Canon Color imageCLASS MF8050Cn Basic Operation Manual

Is a message displayed on the display?

Check if an error message appears on the display of the operation panel.
"Display Messages" (→P.9-9)
Print the transmission management report to check if an error occurs.
"Basic Operation" (→ e-Manual)

Is the telephone line connected or configured properly?

Check that the telephone cable is correctly connected. Check if the cables for the telephone line port and external device port on
the back of the machine are connected inversely.
"Configuring and Connecting the Fax" (→ Starter Guide)
Make sure the machine is set for the correct telephone line type (dial/push).
"Select Line Type" (→P.6-18)
Check if there is a device nearby that interferes with signal reception (e.g., microwave oven). This may affect the telephone line
status.

If You Cannot Solve a Problem

See "Troubleshooting" in the e-Manual, then solve the trouble.
If there is no problem
If You Cannot Solve a Problem
9-11