Canon ImageCLASS D680 - Manual (Page 72)

8-3
❚ Cannot send using Error Correction Mode (ECM).
The other party’s fax machine may not support ECM.
• If the other party’s fax machine does not support ECM, then the document is sent in normal mode without
error checking.
ECM may be disabled.
• Make sure ECM is on. (
→ p. 9-5)
❚ Errors occur frequently while sending.
The telephone lines may be in poor condition, or you may have a bad connection.
• Lower the transmission speed. (
→ p. 9-4)
Receiving Problems
❚ Cannot receive a fax automatically.
The machine may not be set to receive automatically.
• For the machine to receive faxes automatically, the receive mode must be set to FaxTel, FaxOnly,
AnsMode or DRPD (
→ Chapter 5). If you have set AnsMode, confirm that an answering machine is
connected to the machine and that it is turned on with an outgoing message properly recorded. (
→ p. 5-2)
The machine’s memory is full.
• Print out or delete any documents stored in memory to free up space in the machine’s memory. (
→ pp. 4-15,
4-16)
An error may have occurred during reception.
• Print an ACTIVITY REPORT and check for an error. (
→ p. 7-2)
No paper in the cassette.
• Make sure paper is loaded in the cassette. (
→ Set-up Instructions)
The telephone line may not be connected properly.
• Make sure all line connections are secure. (
→ p. 1-3)
❚ The machine does not switch automatically between telephone and fax reception.
The machine may not be set to switch automatically between telephone and fax reception.
• For the machine to switch automatically, the receive mode must be set to FaxTel, AnsMode or DRPD (
→
Chapter 5). If you have set AnsMode, confirm that an answering machine is connected to the machine and that
it is turned on with an outgoing message properly recorded. (
→ p. 5-2)
The sending fax machine cannot send the CNG signal that tells the machine that the incoming signal is a
fax.
• Some fax machines cannot send the CNG signal that tells your machine the incoming call is from a fax
machine. In such cases, you will have to receive the fax manually. (
→ p. 5-6)
T
roubleshooting
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