TROUBLESHOOTING PROCEDURES
16-6
MFC 4550/6550MC/7550MC
OP-US-5.0
Maintenance
The Print is too Light or too Dark
The
density
dial
is
located
in
the
corner
under
the
top
cover.
(Remove
the
drum
unit.)
You
can
use
it
to
adjust
print density by increasing or
decreasing the Print Density function
setting you chose.
The print may become darker or lighter
as conditions change (such as changing
the toner cartridge and drum unit or if
the machine has become overheated
from heavy use).
Use a straight blade screwdriver to turn the print density dial clockwise for darker print
and counterclockwise for lighter print. The dial has been set to the middle position.
Make five or six copies to bring the toner up to the level of the new setting.
If the print is still too light, check to see if the Toner Save feature is ON (see page 6-11).
Received Faxes Appear as Split or Blank Pages:
If
the
received
data
is
divided
and
printed
on
2
pages
or
if
you
get
an
additional
blank
page,
your
recording
size
may
not
be
set
correctly
for
the
recording
paper
you
are
using
If
you
are
using
the
fixed
reduction
feature,
check
to
see
if
the
reduction
ratio
is
suitable
for
the
real
recording
When Dialing Doesn’t Work...
You
may
have
the
wrong
dialing
mode.
Change
the
TONE/PULSE
setting.
(See
page
You
should
check
all
the
telephone
line
connections
(such
as
to
the
handset
and
to
the
wall
jack).
Check
also
that
the
power
cord
is
connected
and
the
power
switch
is
turned
on.
(See
page
2-6
of
Setup
Manual
for
Fax,
Printer,
Copier.)
Check
by
pressing
Hook
to
see
if
you
hear
a
dial
tone.
Also
try
dialing
by
first
pressing
Hook
or
lifting
the
handset.
Wait
until
you
hear
the
fax
tones
and
then
press
Start.
Cover Page Comment Always Prints “Please Call”:
The
Cover
Page
report
is
only
a
sample
of
the
format
and
always
prints
“Please
Call”.
The
comment
you
programmed
will
be
generated
at
the
receiving
machine.
MFC Does Not Answer When Called:
Make
sure
the
MFC
is
not
in
Manual
mode
(Fax
and
F/T
lights
out).
Check
it
is
in
the
correct
receiving
mode
for
your
setup
(either
Fax,
F/T
or
TAD).
Check
for
a
dial
tone.
If
possible,
call
your
MFC
to
hear
what
is
happening.
No Dial Tone on the Handset:
Press
Hook.
If
there
is
no
dial
tone,
check
telephone
line
connections
at
MFC
and
wall
jack.
You
can
connect
a
regular
telephone
into
the
wall
jack
to
see
if
the
phone
line
is
working.
Print density dial