Canon PIXMA E481, Online Manual, Page: 639 / 776

Quality of Received Fax is Poor
Check1
Check the scan settings of the sender's fax machine.
Ask the sender to adjust the scan settings of the fax machine.
Check2
Is ECM RX set to OFF ?
Select ON for ECM RX in Adv. communication in Adv. FAX settings under Fax settings .
If ECM RX is enabled, the sender's fax machine resends the fax after correcting errors automatically.
Adv. FAX settings
Check3
Is the sender's original document or scanning area of the sender's fax machine
dirty?
The image quality of the fax is mainly determined by the sender's fax machine. Contact the sender and ask the
sender to check whether the scanning area of the fax machine is dirty.
Check4
Is ECM transmission/reception enabled although the line/connection is poor, or
is the sender's fax machine compatible with ECM?
• Select ON for ECM RX in Adv. communication in Adv. FAX settings under Fax settings .
Adv. FAX settings
• Contact the sender and ask the sender to check whether the machine is set to enable ECM transmission.
If the sender's or recipient's fax machine is not compatible with ECM, the fax will be sent/received without
automatic error correction.
• Reduce the reception start speed on RX start speed in Adv. communication in Adv. FAX settings under
Fax settings .
Adv. FAX settings
Check5
Did you confirm the paper and print quality settings?
Print Results Not Satisfactory
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