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The machine does not answer 
when called.
Make sure the machine is in the correct receive mode for your setup. (See 
Receiving a fax on page 39.) Check for a dial tone. If possible, call your machine 
to hear it answer. If there is still no answer, check the telephone line cord 
connection. If you do not hear ringing when you call your machine, ask your 
telephone company to check the line.
Sending faxes
Difficulties Suggestions
Poor sending quality. Try changing your resolution to Fine or S.Fine. Make a copy to check your 
machine’s scanner operation. If the copy quality is not good, clean the scanner. 
(See Cleaning the scanner glass on page 138.)
Transmission Verification Report 
says ‘RESULT:ERROR’.
There is probably temporary noise or static on the line. Try sending the fax again. 
If you are sending a PC Fax message and get ‘RESULT:ERROR’ on the 
Transmission Verification Report, your machine may be out of memory. To free up 
extra memory, you can turn off fax storage (see Turning off remote fax options 
on page 72), print fax messages in memory (see Printing a fax from the memory 
on page 43) or cancel a delayed fax or polling job (see Checking and cancelling 
waiting jobs on page 38). If the problem continues, ask the telephone company to 
check your telephone line.
If you often get transmission errors due to possible interference on the telephone 
line, try changing the Compatibility setting to Normal or Basic(for VoIP). 
(See Telephone line interference on page 126.)
Vertical black lines when sending. Black vertical lines on faxes you send are typically caused by dirt or correction fluid 
on the glass strip. (See Cleaning the scanner glass on page 138.)
Handling incoming calls
Difficulties Suggestions
The machine ‘Hears’ a voice as a 
CNG Tone.
If Fax Detect is set to on, your machine is more sensitive to sounds. It may 
mistakenly interpret certain voices or music on the line as a fax machine calling 
and respond with fax receiving tones. Deactivate the machine by pressing 
Stop/Exit. Try avoiding this problem by turning Fax Detect to off. (See Fax 
Detect (Easy Receive) on page 41.)
Sending a Fax Call to the machine. If you answered on an external or extension telephone, press your Remote 
Activation code [default setting is (l 51)]. When your machine answers, hang up.
Custom features on a single line. If you have Call Waiting, Call Waiting/Caller ID, Caller ID, Voice Mail, an 
answering machine, an alarm system or other custom feature on a single 
telephone line with your machine, it may create a problem sending or receiving 
faxes.
For Example: If you subscribe to Call Waiting or some other custom service and 
its signal comes through the line while your machine is sending or receiving a fax, 
the signal can temporarily interrupt or disrupt the faxes. ECM feature should help 
overcome this problem. This condition is related to the telephone system industry 
and is common to all devices that send and receive information on a single, shared 
line with custom features. If avoiding a slight interruption is crucial to your 
business, a separate line with no custom features is recommended.
Telephone line or connections (continued)
Difficulties Suggestions