Canon PIXMA MX492 User Manual - Page 639

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 639