Faxes Are Not Being Received Correctly - Canon MultiPASS C20 Software User's Manual

Full paper supply
Whether the fax unit is a G3 machine
Whether the unit supports ECM (if so, turn ECM on for your C20
through the operation panel menu)
Does the BUSY/NO SIGNAL message appear in the LCD display?
Make sure your phone line is active and correctly connected to the C20.

Faxes Are Not Being Received Correctly.

Is the operation panel blank?
You might have a power problem. Check that the AC adapter is plugged
securely into the unit, and that your electrical source is OK.
Is the C20 warm to the touch?
The unit might have overheated and shut down. Turn the unit off and let
it cool down for several minutes but less than one hour, or you might lose
information registered in memory. Try using it again.
Is the C20 not switching correctly between telephone and fax
transmissions?
Make sure Receive Mode is set to Fax/Tel Mode.
Are you not automatically receiving faxes?
Make sure Receive Mode is set to Fax/Tel Mode or Fax Only Mode.
Are you not manually receiving faxes?
Always press START/COPY before hanging up the hand set (not after).
Chapter 9 Frequently Asked Questions 9-3