Canon PIXMA MX850 Quick Start Guide - Page 167

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

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Cause The machine is not set to the appropriate receive mode. Action Check the receive mode setting (A), and change it to a mode suited to your connection if necessary. (A) 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 91. FAX only mode See "If You Want to Receive Only Faxes Automatically with Your Machine, or Have a Dedicated Telephone Line for Fax Use Only:" on page 91. DRPD*1 See "If You Subscribe to a Distinctive Ring Pattern Detection (DRPD) Service with Your Telephone Company (US and Canada only):" on page 93. Network switch*2 See "If You Want the Machine to Automatically Switch between Fax and Voice Calls by the Call Ring Patterns (Network Switch):" on page 93. 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 92. *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. „ Machine Does Not Switch Automatically between Voice and Fax Calls 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 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 ECM RX is set to OFF. The sender's original document or fax machine is dirty. Action Set ECM RX to ON. Refer to "ECM RX" in "Device Settings" of the User's Guide on-screen manual. If ECM RX is enabled, the sender's fax machine resends the fax after correcting errors automatically. 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. Troubleshooting 163

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163
Troubleshooting
Machine Does Not Switch Automatically between Voice and Fax Calls
Quality of Received Fax is Poor
The machine is not set to the
appropriate receive mode.
Check the receive mode setting (A), and change it to a mode suited to your
connection if necessary.
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 91.
FAX only mode
See “If You Want to Receive Only Faxes Automatically with Your Machine, or
Have a Dedicated Telephone Line for Fax Use Only:” on page 91.
DRPD
*1
See “If You Subscribe to a Distinctive Ring Pattern Detection (DRPD) Service
with Your Telephone Company (US and Canada only):” on page 93.
Network switch
*2
See “If You Want the Machine to Automatically Switch between Fax and Voice
Calls by the Call Ring Patterns (Network Switch):” on page 93.
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 92.
*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.
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
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.
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.
If
ECM RX
is enabled, the sender’s fax machine resends the fax after correcting
errors automatically.
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.
Cause
Action
(A)