Brother MFC-4820C, Service Manual

Page: 96 / 268

6-11
Adjusting the print head unit
N
Y
Y
N
Head skew
rank
1
2
3
4
5
Set the paper tray and output paper support and then load paper.
Has the
print head unit been replaced
with a new one?
Check the head skew rank.
Is the
head skew rank of the
new head unit the same as
that of the removed
one?
Adjust the eccentric bushing with
needle-nose pliers.
Turn the machine on and make
the machine enter the
maintenance mode.
Update the head property data.
(Function code 68 + 2580)
Turn the machine off and then
back on.
Carry out initial purge.
(Function code 76 + 4)
Load paper.
Check the head skew rank code (1 to 5) next to the 2-dimensional
code on the head property label (shown on page 6-9) attached to
the print head unit or the rear left side of the machine (with the
battery cover or rear cover S removed). Refer to Section 6.1.4.
Head skew rank
If the head skew rank code (e.g., 2) of the new head unit is less than
that (e.g., 3) of the removed one, rotate the eccentric bushing to
the front by the amount of the difference.
(Front) (Rear)
Rotate the eccentric bushing:
to the front by 2 position markers
to the front by 1 position marker
(No change)
to the rear by 1 position marker
to the rear by 2 position markers
Press
Menu/Set, *
,
2
,
8
,
6
, and
4
. (Refer to Chapter 7 for details.)
Press
6
and
8
in this sequence in the initial stage of the maintenance
mode. Next press
2
,
5
,
8
, and
0
and then enter the 14-digit property
code of the new head unit. (Refer to Chapter 7, Section 7.5.15 for
details.)
Property code (14-digit)
Press
7
and
6
in this sequence in the initial stage of the maintenance
mode. Next press
4
and
Fax Start
.
(Refer to Chapter 7, Section 7.5.18 for details.)
Eccentric bushing
Carriage rail