If You Are Having Difficulty With Your Mfc - Brother MFC-8420 User Manual

If you are having difficulty with your MFC

If you think there is a problem with the way your faxes look, make a
copy first. If the copy looks good, the problem is probably not your
MFC. Check the chart below and follow the troubleshooting tips.
DIFFICULTY
Printing or Receiving Faxes
Condensed print and
horizontal streaks or the top
and bottom of sentences are
cut off.
Poor quality print.
Vertical black lines when
receiving.
Horizontal streaks; lines are
missing.
Received faxes appear as split
or blank pages.
Phone Line or Connections
Dialing does not work
The MFC does not answer
when called.
TROUBLESHOOTING AND ROUTINE MAINTENANCE 22 - 12
SUGGESTIONS
If your copy looks good, you probably had a bad connection, with static or
interference on the telephone line. If the copy looks bad, clean the scanner
area. If there is still problem, call Brother or your dealer for service.
See Improving the print quality on page 22-17.
Sometimes you may see vertical streaks/black lines on the faxes you
receive. Your MFC's primary corona wire for printing may be dirty, or the
sending party's fax scanner may be dirty. Clean your primary corona
wire (See Cleaning the drum unit on page 22-26), 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 your
dealer for service.
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.
If the received data is divided and printed on two pages or if you get an
additional blank page, your Paper Size setting may not be correct for the
paper you are using (See Type and size of paper on page 2-1). Make
sure that auto reduction function setting is turned on. (See Printing a
reduced incoming fax (Auto Reduction) on page 5-5.)
Check for a dial tone. Change Tone/Pulse setting. (See Setting Tone
or Pulse dialing mode (Except for New Zealand) on page 4-14.) Check
all line cord connections. Check power cord connection. Send a manual
fax by lifting the external handset and dialing the number. Wait to hear
fax receiving tones before pressing Start.
Make sure the MFC is in the correct receiving mode for your setup. (See
Basic sending operations on page 6-7.) Check for a dial tone. If
possible, call your MFC to hear it answer. If there is still no answer,
check the telephone line cord connection. If there is no ringing when you
call your MFC, ask your telephone company to check the line.