Brother MFC 9970CDW - Manual (Page 145)

Troubleshooting
137
B
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 on page 36.)
Sending a Fax Call to the machine. If you answered on an external or extension telephone, press your Remote
Activation code (default setting is l51). 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. Brother’ s 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.
Copy difficulties
Difficulties Suggestions
Cannot make a copy.
 Make sure that COPY is illuminated. (See How to copy on page 51.)
 Contact your administrator to check your Secure Function Lock Settings.
Vertical black line appears in
copies. Black vertical lines on copies are typically caused by dirt or correction fluid on the
glass strip, or one or more corona wires are dirty. (See Cleaning the scanner glass
on page 93 and Cleaning the corona wires on page 98.)
Copies are blank. Make sure you are loading the document properly. (See Using the automatic
document feeder (ADF) on page 27 or Using the scanner glass on page 28.)