Canon FAX-L280 User Manual page 170

You dialled or have been provided with an incorrect number.
Dial the number again, or check that you have the correct number.
The other party's fax machine may be out of paper.
Contact the other party and ask them to make sure paper is loaded in
their fax machine.
There may be other documents being sent from memory.
Allow time for those documents to finish sending.
An error may have occurred during sending.
Print an ACTIVITY REPORT and check for an error code
(
The telephone line may not be working properly.
Make sure there is a dial tone when you press Hook or when you lift
the handset of any external device connected to the FAX. If there is
no dial tone, contact your local telephone company.
The receiving fax machine may not be a G3 fax machine.
Make sure the receiving fax machine is compatible with the
FAX-L280/L200 (which is a G3 fax machine).
The subaddress and/or password are incorrect.
If you registered a subaddress/password under a speed dialling button
or code, make sure they match the other party's settings.
¶ Faxes sent from the FAX are spotted or dirty.
The receiving fax machine may not be working properly.
Check the FAX by making a copy (
the problem may be in the receiving fax machine. If the copy is
spotted or dirty, clean the scanner components (
The document may not be loaded correctly.
Make sure the document is loaded correctly in the ADF (
¶ Cannot send using Error Correction Mode (ECM).
The other party's fax machine may not support ECM.
If this is the case, the document is sent without ECM.
ECM may be disabled.
Make sure ECM on your FAX is enabled (
Contact the other party to check if ECM on their fax machine is
enabled.
13-14
Troubleshooting
p. 11-3).
p. 10-2). If the copy is clear,
p. 12-5).
ECM TX, p. 14-6).
p. 4-3).
Chapter 13