d-Color MF4003/MF3303
I SERVICE MODE > 5. Machine
I-10
1.
Position the test chart correctly so that the original reference point is aligned with the scale.
2.
Press the Start key to make a copy.
3.
Check point C on the test pattern.
Enlarged view of the test chart
COL
OR
CHA
R
T
Y
M
C
C
M
C
Y
Y
M
Color
is “hue”,
lightness is “value”,
satu
ration is “chr
oma”:
this is the worl
d of
color
.
Hue
P2
P2
The
quality
of
co
lor
which
can
be
d
esc
ri
b
e
d
b
y
wo
rd
s
su
ch
a
s
re
d
,
yello
w
,
b
lue etc.
V
alue
The
quality
of
co
lor
which
can
be
descr
ibed
b
y
w
ords
such
as
lig
ht,
dar
k
et
c.,
relating
the
color
to
a g
ra
y
of
a s
im
ilar
li
ghtness
.
Chr
oma
The
quality
of
co
lor
which
can
be
descr
ibed
b
y
w
ords
su
ch
as
vi
vi
d,
d
ul
l
e
tc
.,
d
e
sc
ri
b
in
g
th
e
e
xt
e
n
t
to
w
h
ic
h
a
col
o
r
d
iff
er
s
fr
o
m
a
gra
y
ha
ving t
he s
ame v
alue
.
P1
1.0
1.1
1.25
1.4
1.6
1.8
2.0
2.2
2.5
2.8
3.2
3.6
4.0
4.5
Y
M
C
C
M
C
Y
Y
M
1.0
1.1
1.25
1.4
1.6
1.8
2.0
2.2
2.5
2.8
3.2
3.6
4.0
4.5
C
4.
If the test pattern falls outside the target, change the setting using the [+] / [-] key.
• If the C width on the copy sample is less than one on test chart, increase the setting.
• If the C width on the copy sample exceeds one on test chart, decrease the setting.
5.
Press the Start key to make another test pattern.
6.
Check the image on the test pattern to see if the specifications are met.
7.
Make adjustments until the targets are met.
5.4.5 Sub Scan Zoom Adj.
• To adjust the zoom ratio in the sub scan direction for the scanner section.
• The LED exposure unit or the scanner motor has been replaced.
NOTE
▪ Width D on the color chart and one on the test pattern are measured and adjusted so that the difference of width D satisfies the
the following target shown below.
▪ An adjustment must have been completed correctly of [Printer Area].
Target
Setting range
Default
Width D: ± 1.0 mm
0.990 to 1.015 (Step: 0.001)
1.000
* Standard size when using a scale: 300.0 mm
<Procedure>
1.
Position the test chart correctly so that the original reference point is aligned with the scale.
2.
Press the Start key to make a copy.
3.
Check point D on the output test pattern.
Enlarged view of the test chart
COL
OR
CHA
R
T
Y
M
C
C
M
C
Y
Y
M
Color
is “hue”,
lightness is “value”,
saturatio
n is “chr
oma”:
this is th
e wo
rld of color
.
Hue
P2
P2
The
quality
of
color
which
can
be
d
esc
ri
b
e
d
b
y
wo
rd
s
su
ch
a
s
re
d
,
yello
w
,
b
lue etc.
V
alue
The
quality
of
color
which
can
be
descr
ibed
b
y
w
ords
such
as
light,
dar
k etc., relating
the
color
to
a g
ra
y
of
a simi
lar lightnes
s.
Chr
oma
The
quality
of
color
which
can
be
descr
ibed
b
y
w
ords
such
as
vivid,
d
ul
l
e
tc
.,
d
e
sc
ri
b
in
g
th
e
ext
e
n
t
to
w
h
ic
h
a
col
o
r
d
iff
er
s
fr
o
m
a
gra
y
ha
ving t
he same
value
.
P1
1.0
1.1
1.25
1.4
1.6
1.8
2.0
2.2
2.5
2.8
3.2
3.6
4.0
4.5
Y
M
C
C
M
C
Y
Y
M
1.0
1.1
1.25
1.4
1.6
1.8
2.0
2.2
2.5
2.8
3.2
3.6
4.0
4.5
D
4.
If the test pattern falls outside the target, change the setting using the [+] / [-] key.
• If the D width on the copy sample is less than one on test chart, increase the setting.
• If the D width on the copy sample exceeds one on test chart, decrease the setting.
5.
Press the Start key to make another test pattern.
6.
Check point D on the output test pattern again.
7.
Make adjustments until the targets are met.
5.5 Color Registration Adjustment
• To adjust color shift if there is any when comparing the original with copy of the plain or thick paper.
• To correct any color shift.
• This setting can be made independently for each paper type.
Setting item
Setting range
Paper type
Color selection
Plain Paper/Plain Paper+, Thick Paper
Cyan, Magenta, Yellow
X
-6 to +6 dot (step: 1 dot)
Y
-6 to +6 dot (step: 1 dot)
<Procedure>
1.
Load manual bypass tray with A4.
2.
Press the Start key.
3.
On the test pattern produced, check for deviation between the black line and the line of each color at positions X and Y.
4.
Select the paper type and color to be adjusted.
5.
Using the [+] / [-] key, change the setting value as necessary. (At this time, only the line of the selected color moves.)
• If the cross deviates in the direction of A, decrease the setting.
• If the cross deviates in the direction of B, increase the setting.
6.
Produce another test pattern and make sure that there is no deviation.
Service Manual
Y119930-3
Summary of Contents for d-Color MF 4003
Page 1: ...Multifunction Digital Copier d Color MF4003 MF3303 Service Manual Version 2 0 Code Y119930 3 ...
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