Brother International HL-3400CN Service Manual - Page 307

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HL-3400CN SERVICE MANUAL 1-5 Wrinkle / Image Migration Phenomenon Banding shadows of different optical density appear due to wrinkle, image migration and color misregistration occurring on the print paper as shown in print sample (5) of Page 8-45. Main Causes (1) Print paper other than the recommended paper is being used. (2) The paper discharger unit of the transfer unit is not functioning. (3) The transfer unit is not locked properly. (4) Fuser roller is deformed or is reaching the end of life. (5) One side of the fusing unit is lifted up slightly. Countermeasures (1) Use a recommended paper. (2) Confirm if the transfer unit is properly installed to the paper discharger unit and functioning normally. 2-1) Push the transfer unit and ensure it is locked at right and left sides. (3) Refit the fusing unit correctly and lock it in position. (4) Replace the fusing unit with a new one. 8-49

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HL-3400CN
SERVICE
MANUAL
1-5
Wrinkle
/
Image
Migration
Phenomenon
Banding
shadows
of
different
optical
density
appear
due
to
wrinkle,
image
migration
and
color
misregistration
occurring
on
the
print
paper
as
shown
in
print
sample
(5)
of
Page
8-45.
Main
Causes
(1)
Print
paper
other
than
the
recommended
paper
is
being
used.
(2)
The
paper
discharger
unit
of
the
transfer
unit
is
not
functioning.
(3)
The
transfer
unit
is
not
locked
properly.
(4)
Fuser
roller
is
deformed
or
is
reaching
the
end
of
life.
(5)
One
side
of
the
fusing
unit
is
lifted
up
slightly.
Countermeasures
(1)
Use
a
recommended
paper.
(2)
Confirm
if
the
transfer
unit
is
properly
installed
to
the
paper
discharger
unit
and
functioning
normally.
2-1)
Push
the
transfer
unit
and
ensure
it
is
locked
at
right
and
left
sides.
(3)
Refit
the
fusing
unit
correctly
and
lock
it
in
position.
(4)
Replace
the
fusing
unit
with
a
new
one.
8-49