Brother MFC-6800 User Manual

      T R O U B L E S H O O T I N G   A N D   R O U T I N E   M A I N T E N A N C E

The MFC does not 
answer when called.

Make sure the MFC is in the correct receiving 
mode for your setup (either 

, 

or

(for Distinctive 

Ring). Check for dial tone. If possible, call your 
MFC to hear it answer. If there is still no answer, 
check the telephone line cord connection. Connect 
a standard telephone handset to the MFC telephone 
jack. If there is no ringing when you call your 
MFC, call your telephone company to check the 
line.

Transmitting quality is 
poor.

Try changing your resolution to 

 or 

page 6-7). Make 

a copy to verify the MFC’s scanner operation.

Transmission 
Verification Report 
prints “Results:NG”.

There is probably temporary noise or static on the 
phone line. Try sending the fax again. If the 
problem continues, call the telephone company to 
check your phone line.

The receiving party says 
the picture is not clear.

Sometimes the resolution mode you chose when you 
sent your fax was not appropriate. Send the fax again, 
but try using the 

 or 

 mode. Also, 

your MFC’s scanner may be dirty, so try cleaning it. 
(See pages 20-17)

The receiving party says 
vertical streaks appear 
on the faxes they 
receive.

Your MFC’s scanner may be dirty or the receiving 
party’s print head may be dirty. Clean your scanner 
(see pages 20-17), and then make a copy to check 
if the problem was caused by your machine.