Canon MX310 „Quality of Received Fax is Poor, „Machine Does Not Switch Automatically between Voice and Fax Calls

Cause	Action
A paper size other than A4, Letter or	If a paper size other than A4, Letter or Legal* is loaded, incoming faxes are not
Legal* is loaded.	printed and are stored in memory. Change the paper to A4, Letter or Legal* size,
	then press the OK button on the machine.
The machine is not set to the	Check the receive mode setting, and change it to a mode suited to your
appropriate receive mode.	connection if necessary.
	FAX ONLY MODE
	See “If You Want to Receive Only Faxes Automatically with the Machine, or
	Have a Dedicated Telephone Line for Fax Use Only:” on page 48.
	TEL PRIORITY MODE
	See “If You Are Using a Single Telephone Line for Faxes and Voice Calls and
	Use Voice Calls More Frequently:” on page 48.
	FAX PRIORITY MODE
	See “If You Are Using a Single Telephone Line for Faxes and Voice Calls and
	Want to Receive Faxes Automatically:” on page 49.
	DRPD
	See “If You Subscribe to a Distinctive Ring Pattern Detection (DRPD) Service
	with Your Telephone Company (US and Canada only):” on page 50.
	NETWORK SWITCH
	See “If You Want the Machine to Automatically Switch between Fax and Voice
	Calls by the Call Ring Patterns (Network Switch):” on page 50.

* Legal may not be available depending on the country or region of purchase.

„Machine Does Not Switch Automatically between Voice and Fax Calls

Cause	Action
The receive mode displayed on the	If the receive mode is set to FAX ONLY MODE, there will be no automatic
bottom left of the LCD is FAXONLY.	switching between voice and fax calls. Set the receive mode to TEL PRIORITY
	MODE, FAX PRIORITY MODE, DRPD*1, or NETWORK SWITCH*2.
	If the receive mode is TEL PRIORITY MODE, connect an answering machine to
	the machine and check that a message plays back when the answering
	machine answers.

*1 This setting is only available in US and Canada.

*2 This setting may not be available depending on the country or region of purchase.

„Quality of Received Fax is Poor

Cause	Action
ECM RX is set to OFF.	Set ECM RX to ON. Refer to “ECM RX” in “FAX SETTINGS” of the User’s Guide
	on-screen manual.
The sender’s original document or fax	The image quality of the fax is mainly determined by the sender’s fax machine.
machine is dirty.	Contact the sender and check whether the scanning area of his/her fax machine
	is not dirty.
ECM sending/receiving is not enabled	z On the machine, set ECM RX to ON. Refer to “ECM RX” in “FAX SETTINGS”
although the line/connection is poor.	of the User’s Guide on-screen manual.
	z Contact the sender and check that his/her machine is set to enable ECM
	sending.
	z If the sender’s or receiver’s fax is not ECM-compatible, the fax will be sent/
	received in the standard mode.
	z Reduce the reception start speed. Refer to “RX START SPEED” in “FAX
	SETTINGS” of the User’s Guide on-screen manual.

98Troubleshooting