Brother MFC 9880 Manual De Usuario

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   Troubleshooting and Maintenance   
135
MAINTENANCE
Difficulty with Operation
If you think there is a problem with the machine, make a copy first. If the copy looks good, the 
problem is probably not the machine. Check the table below and follow the troubleshooting tips.
DIFFICULTY
SUGGESTIONS
Printing and Receiving Faxes
Condensed print and 
horizontal streaks/top and 
bottom of sentences are cut 
off.
This can be caused by static or interference on the telephone line. 
You can make a copy using the Copy function and see if the same 
problem occurs. If the copy is also bad, call your Brother dealer for 
service.
Vertical streaks/black lines 
appear on the fax you receive
Sometimes you may see vertical streaks/black lines on the faxes you 
receive. Either the machine’s primary corona wire for printing may 
be dirty, or the sending party’s fax scanner may be dirty. Clean your 
primary corona wire, or ask the sender to make a copy to see if the 
problem is with the sending machine. Try receiving from another 
fax machine. If the problem continues, call Brother dealer for 
service.
Machine “hears” voice as 
CNG tone
If the machine is set to Fax Detect (with an External Telephone) 
ON, it is more sensitive to sounds. The machine may mistakenly 
interpret certain voices or music on the line as a calling fax machine 
and respond with fax receiving  tones. Deactivate the fax by 
pressing Stop/Exit. Try avoiding this problem by turning Fax 
Detect (with an External Telephone) to OFF. (See Fax Detect (with 
an External or Extension Telephone)
, page 29.)
Horizontal streaks
You may get a fax with horizontal streaks or with missing lines. 
Usually this is caused by a poor telephone connection. Ask the other 
party to send the fax again.
Phone Line or Connections
Dialling does not work
Check for a dial tone. Change TONE/PULSE setting. (See Setting 
the Dialling Mode (Tone/Pulse)
, page 20.) Check all line cord 
connections. Check power cord connection. Send a manual fax by 
lifting the external telephone’s handset, and dialling the number. 
Wait to hear fax receiving tones before pressing Fax Start.
The machine does not answer 
when called
Make sure the machine is in the correct receiving mode for your 
setup (either Fax, Fax/Tel (F/T) or TAD). Check for dial tone. If 
possible, call the machine to hear it answer. If there is still no 
answer, check the telephone line cord connection. If there is no 
ringing when you call the machine, call your Telephone Company 
to check the line.
No dial tone on the external 
telephone’s handset
Lifting the external phone’s handset. If you hear no dial tone, check 
telephone line cord connections at the machine and wall socket. 
Check that the external telephone is connected to the machine 
correctly. Test the wall socket with another single line telephone. If 
no dial tone on the wall outlet, call your Telephone Company.