123Troubleshooting
Machine Does Not Switch Automatically between Voice and Fax Calls
*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
Repeated Errors Occur When You Receive a Fax
Cause Action
The receive mode, displayed in the Fax
standby screen, is FAX only mode.
If the receive mode is set to FAX only mode, there will be no automatic
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.
Cause Action
ECM RX is set to OFF.Set ECM RX to ON. Refer to “ECM RX” in “Device Settings” of the User’s Guide
on-screen manual.
The sender’s original document or fax
machine is dirty.
The image quality of the fax is mainly determined by the sender’s fax machine.
Contact the sender and check whether the scanning area of his/her fax machine
is not dirty.
ECM sending/receiving is not enabled
although the line/connection is poor.
z On your machine, set ECM RX to ON. Refer to “ECM RX” in “Device
Settings” 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 “Device
Settings” of the User’s Guide on-screen manual.
Cause Action
The telephone line condition or the
connection is poor.
Reduce the reception start speed. Refer to “RX start speed” in “Device Settings”
of the User’s Guide on-screen manual.
If there is a poor line or connection, reducing the reception start speed may
correct the error.
The sender’s fax machine is not
operating normally.
Contact the sender and check whether his/her fax machine is operating
normally.
