Sharp MX-6500N / MX-7500N (serv.man20) Service Manual ▷ View online
MX-7500N SIMULATION 6 – 81
NOTE:
46-21
Purpose
Adjustment
Function (Purpose)
Copy color balance adjustment (Manual
adjustment)
Section
Operation/Procedure
1) Select an adjustment target color with [K][C][M][Y] keys on the
1) Select an adjustment target color with [K][C][M][Y] keys on the
touch panel.
2) Select an adjustment target item with scroll key on the touch
panel.
3) Enter the set value with 10-key.
* When the key is pressed, the setting value of each
item can be changed with 1up (1down) collectively.
4) Press [OK] key. (The set value is saved.)
When the adjustment value is increased, the image density is
When the adjustment value is increased, the image density is
increased, and vice versa.
When [EXECUTE] key is pressed, the check pattern in printed in
When [EXECUTE] key is pressed, the check pattern in printed in
the color balance and density corresponding to the adjustment
value.
46-23
Purpose
Adjustment/Setup
Function (Purpose)
Used to set the density correction of copy
high density section (High density tone gap
supported).
Section
Operation/Procedure
1) Enter the set value with 10-key.
1) Enter the set value with 10-key.
2) Press [OK] key. (The set value is saved.)
* When tone gap is generated in the high density area, set items A
and B to "0".
The density of high density part decreases. However, the tone
The density of high density part decreases. However, the tone
gap is better.
* To increase the density in the high density area further, set items
A and B to "1".
The tone gap may occur in high density part.
The tone gap may occur in high density part.
NOTE: Do not change the values of items C, D, E, and F. If these
values are changed, the density in the high density area is
changed.
46-24
Purpose
Adjustment
Function (Purpose)
Copy color balance adjustment
(Auto adjustment)
Section
Operation/Procedure
1) Press [EXECUTE] key.
1) Press [EXECUTE] key.
The color patch image (adjustment pattern) is printed out.
2) Plate the printed adjustment pattern on the document table,
select [FACTORY] or [SERVICE] mode.
3) Press [EXECUTE] key.
The copy color balance automatic adjustment is performed,
then the adjustment result pattern is printed.
MODE 1
High gamma (high contrast images)
MODE 2
Normal gamma
STOP
The image density in 3 - 7mm area at the lead edge is
scanned, and the output image density is determined
according to the scanned density. (The output image
density is even for all the surface.)
REALTIME
The densities of the document width are scanned
sequentially, and the output image density is determined
according to the density in each area of document. (The
output image density may not be even for all the
surface.)
PRESCAN
The densities of the all surface of document are scanned
sequentially, and the output image density is determined
according to the average of the scanned densities. (The
output image density is even for all the surface.)
AE WIDTH
FULL
The document density scan area in the monochrome
auto mode is 3 - 7mm at the document lead edge x the
document width. This is not related to the PRESCAN
mode.
AE WIDTH
PART
The document density scan area in the monochrome
auto mode is 3 - 7mm at the document lead edge x
100mm width. This is not related to the PRESCAN mode.
Item/Display
Density level
(Point)
Setting range
Default
value
A
POINT1
Point 1
1 - 999
500
B
POINT2
Point 2
1 - 999
500
C
POINT3
Point 3
1 - 999
500
D
POINT4
Point 4
1 - 999
500
E
POINT5
Point 5
1 - 999
500
F
POINT6
Point 6
1 - 999
500
G
POINT7
Point 7
1 - 999
500
H
POINT8
Point 8
1 - 999
500
I
POINT9
Point 9
1 - 999
500
J
POINT10
Point 10
1 - 999
500
K
POINT11
Point 11
1 - 999
500
L
POINT12
Point 12
1 - 999
500
M
POINT13
Point 13
1 - 999
500
N
POINT14
Point 14
1 - 999
500
O
POINT15
Point 15
1 - 999
500
P
POINT16
Point 16
1 - 999
500
Q
POINT17
Point 17
1 - 999
500
0
Enable
1
Inhibit
Item/Display
Content
Setting
range
Default
value
A CMY
(0: ENABLE
1: DISABLE)
0
CMY engine highest
density correction mode:
Enable
0 - 1
0
1
CMY engine highest
density correction mode:
Disable
B K
(0: ENABLE
1: DISABLE)
0
K engine highest density
correction mode: Enable
0 - 1
1
1
K engine highest density
correction mode: Disable
C CYAN MAX
TARGET
Scanner target value for CYAN
maximum density correction
0 - 999
500
D MAGENTA
MAX TARGET
Scanner target value for
MAGENTA maximum density
correction
0 - 999
500
E YELLOW MAX
TARGET
Scanner target value for
YELLOW maximum density
correction
0 - 999
500
F
BLACK MAX
TARGET
Scanner target value for
BLACK maximum density
correction
0 - 999
500
MX-7500N SIMULATION 6 – 82
4) Press [OK] key.
The halftone correction target registration is processed.
46-25
Purpose
Adjustment
Function (Purpose)
Used to adjust the copy color balance. (Sin-
gle color copy mode)
Section
Operation/Procedure
1) Select an adjustment target color with [C][M][Y] keys on the
1) Select an adjustment target color with [C][M][Y] keys on the
touch panel.
2) Select an adjustment target item with scroll key on the touch
panel.
3) Enter the set value with 10-key.
4) Press [OK] key. (The set value is saved.)
When the adjustment value is increased, the image density of the
4) Press [OK] key. (The set value is saved.)
When the adjustment value is increased, the image density of the
target color is increased, and vice versa.
46-26
Purpose
Adjustment
Function (Purpose)
Used to reset the single color mode color
balance set value to the default.
Section
Operation/Procedure
1) Press [EXECUTE] key.
2) Press [YES] key.
1) Press [EXECUTE] key.
2) Press [YES] key.
The color balance value of the single color mode is reset to the
default value.
46-27
Purpose
Adjustment/Setup
Function (Purpose)
Used to adjust the gamma/density of copy
images, texts, and line image edges.
Section
Operation/Procedure
1) Select a target item of setting with scroll key on the touch
1) Select a target item of setting with scroll key on the touch
panel.
2) Enter the set value with 10-key.
3) Press [OK] key. (The set value is saved.)
3) Press [OK] key. (The set value is saved.)
When the adjustment values of items A, C, and E are changed, the
gamma of text and line edge image density section is changed.
When the adjustment value is increased, the image contrast of
When the adjustment value is increased, the image contrast of
character edge and line edge is increased. When the adjustment
value is decreased, the image contrast of character and line edge
is decreased.
When the adjustment values of items B, D, and F are increased,
When the adjustment values of items B, D, and F are increased,
the image density of text and line edge section is decreased, and
vice versa.
46-30
Purpose
Adjustment/Setup
Function (Purpose)
Used to adjust the resolution in the sub
scanning direction in the copy mode.
Section
Operation/Procedure
1) Refer to the following table, and enter the set value corre-
1) Refer to the following table, and enter the set value corre-
sponding to the resolution mode with 10-key.
2) Press [OK] key. (The set value is saved.)
Item/Display
Setting range
Default value
C
M
Y
A
RED
0 - 255
0
255
200
B
GREEN
0 - 255
255
0
255
C
BLUE
0 - 255
255
150
0
D
CYAN
0 - 255
255
0
0
E
MAGENTA
0 - 255
0
255
0
F
YELLOW
0 - 255
0
0
255
G
ORANGE
0 - 255
0
150
255
H
NAVY
0 - 255
255
200
0
I
LIGHT GREEN
0 - 255
150
0
150
J
LIGHT BLUE
0 - 255
150
20
0
K
AQUA MARINE
0 - 255
170
0
50
L
PURPLE
0 - 255
128
255
0
M PINK
0 - 255
0
150
20
N
YELLOW GREEN
0 - 255
128
0
255
O
BEIGE
0 - 255
0
50
170
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Item/Display
(Copy mode)
Content
Setting
range
Default
value
A BLACK TEXT
(SLOPE)
Black character edge
gamma skew adjustment
1 - 99
50
B BLACK TEXT
(INTERCEPT)
Black character edge density
adjustment
1 - 99
50
C COLOR TEXT
(SLOPE)
Color character edge gamma
skew adjustment
1 - 99
50
D COLOR TEXT
(INTERCEPT)
Color character edge density
adjustment
1 - 99
50
E ED TEXT
(SLOPE)
Text/Map mode gamma
adjustment (Text/Map mode)
1 - 99
50
F
ED TEXT
(INTERCEPT)
Text/Map mode density
adjustment (Text/Map mode)
1 - 99
50
Item/Display
Content
Setting
range
Default
value
A SCAN
RESOLUTION
SW
Scan resolution
selection
(COPY: COLOR)
Mode 1 0 - 1
0
0
Mode 2
1
MX-7500N SIMULATION 6 – 83
46-32
Purpose
Adjustment/Setup
Function (Purpose)
Used to adjust the document background
density reproducibility in the monochrome
auto copy mode.
Section
Operation/Procedure
1) Select a target item of setting with scroll key on the touch
1) Select a target item of setting with scroll key on the touch
panel.
2) Enter the set value with 10-key.
3) Press [OK] key. (The set value is saved.)
When the adjustment value is increased, reproducibility of the
3) Press [OK] key. (The set value is saved.)
When the adjustment value is increased, reproducibility of the
background and the low density image is increased. When the
adjustment value is decreased, reproducibility of the background
and the low density image is decreased.
46-36
Purpose
Adjustment/Setup
Function (Purpose)
Used to adjust the colors in the 2-color
copy mode.
Section
Operation/Procedure
1) Select a target adjustment item with scroll key on the touch
1) Select a target adjustment item with scroll key on the touch
panel.
2) Enter the set value with 10-key.
3) Press [OK] key. (The set value is saved.)
By changing the density level of each color, the color adjustment in
3) Press [OK] key. (The set value is saved.)
By changing the density level of each color, the color adjustment in
the 2-color copy mode can be performed.
Mode
Scan
mode
Resolution in the sub scanning direction (DPI)
25-99%
[Magnification
ratio]
100-200%
[Magnification
ratio]
201-400%
[Magnification
ratio]
Mode 1
OC
600
600
600
DSPF
600
600
-
Mode 2
OC
400
600
600
DSPF
600
600
-
Item/Display
Content
Setting
range
Default
value
A COPY: OC
Copy mode (for OC)
1 - 250
196
B COPY: DSPF
(SIDE1)
Copy mode (for DSPF front
surface)
1 - 250
196
C COPY: DSPF
(SIDE2)
Copy mode (for DSPF back
surface)
1 - 250
196
D SCAN: OC
Scanner mode (for OC)
1 - 250
196
E SCAN: DSPF
(SIDE1)
Scanner mode (for DSPF
front surface)
1 - 250
196
F
SCAN: DSPF
(SIDE2)
Scanner mode (for DSPF
back surface)
1 - 250
196
Item/Display
Content
Setting
range
Default
value
Item/Display
Content
Setting range
Default value
Default
value
C
M
Y
OUTCOLOR
(Output color
coefficient)
A RED
R output color
0 - 255
0
255
200
-
B GREEN
G output color
0 - 255
255
0
255
-
C BLUE
B output color
0 - 255
255
150
0
-
D CYAN
C output color
0 - 255
255
0
0
-
E MAGENTA
M output color
0 - 255
0
255
0
-
F
YELLOW
Y output color
0 - 255
0
0
255
-
G ORANGE
O output color
0 - 255
0
150
255
-
H NAVY
N output color
0 - 255
255
200
0
-
I
LIGHT GREEN
LG output color
0 - 255
150
0
150
-
J
LIGHT BLUE
LB output color
0 - 255
150
20
0
-
K AQUA MARINE
AM output color
0 - 255
170
0
50
-
L
PURPLE
PU output color
0 - 255
128
255
0
-
M PINK
P output color
0 - 255
0
150
20
-
N YELLOW GREEN
YG output color
0 - 255
128
0
255
-
O BEIGE
BE output color
0 - 255
0
50
170
-
CHROMA
(Chroma
adjustment)
A RED / BLACK
Red extraction mode
(The red recognition area is adjusted.)
0 - 6
-
-
-
3
B KS:CHROMATIC
Chromatic color extraction mode
(The chromatic color recognition area is adjusted.)
0 - 6
-
-
-
3
MX-7500N SIMULATION 6 – 84
46-37
Purpose
Adjustment/Setup
Function (Purpose)
Used to adjust the reproduction capability
of monochrome mode color.
Section
Operation/Procedure
1) Select a target item with scroll keys on the touch panel.
2) Enter the set value with 10-key.
3) Press [EXECUTE] key.
4) Press [YES] key.
This is to adjust the reproduction capability of red and yellow
1) Select a target item with scroll keys on the touch panel.
2) Enter the set value with 10-key.
3) Press [EXECUTE] key.
4) Press [YES] key.
This is to adjust the reproduction capability of red and yellow
images when copying color documents with red and yellow images
in the monochrome mode.
An individual adjustment is available in each of the copy mode and
the printer mode.
* B-Ratio: The value of gray making setting (B) is obtained from
the formula below.
1000-R-Ratio - G-Ratio
1000-R-Ratio - G-Ratio
When [DEFAULT] key is pressed, the values are set to the initial
values (Default).
When the adjustment value of the adjustment item A is increased,
When the adjustment value of the adjustment item A is increased,
the copy density of red images is decreased. When the adjustment
value is decreased, the density is increased.
When the adjustment value of the adjustment item B is increased,
When the adjustment value of the adjustment item B is increased,
the copy density of yellow images is increased. When the adjust-
ment value is decreased, the density in also decreased.
46-38
Purpose
Adjustment/Setup
Function (Purpose)
Used to adjust the black component
amount in the color copy mode.
Section
Operation/Procedure
1) Select the AUTO MODE or the MANUAL MODE with the mode
1) Select the AUTO MODE or the MANUAL MODE with the mode
key.
2) Select the mode to be adjusted with the scroll key.
3) Press the black component amount select key.
This adjusts black ingredient amount in the color copy mode.
3) Press the black component amount select key.
This adjusts black ingredient amount in the color copy mode.
(except character and line image)
As a result of this adjustment, the gradation of the shade part
As a result of this adjustment, the gradation of the shade part
changes.
46-47
Purpose
Adjustment/Setup
Function (Purpose)
Used to set the compression rate of copy
and scan images (JPEG).
Section
Operation/Procedure
1) Select a target item with scroll keys on the touch panel.
2) Enter the set value with 10-key.
3) Press [OK] key.
1) Select a target item with scroll keys on the touch panel.
2) Enter the set value with 10-key.
3) Press [OK] key.
The set value is saved.
Item/Display
Content
Setting
range
Default
value
A R-Ratio
Gray making setting (R)
0 - 1000
63
B G-Ratio
Gray making setting (G)
0 - 1000
877
C R-Ratio RIP
Print gray making setting (R)
0 - 1000
299
D G-Ratio RIP
Print gray making setting (G)
0 - 1000
587
B-Ratio
Gray making setting (B)
(1000-R-Ratio - G-Ratio)
B-Ratio RIP
Print gray making setting (B)
(1000-R-Ratio RIP - G-Ratio RIP)
Item/Display
(Copy mode)
Select
button
Content
Default
value
MANUAL TEXT PRT
(-) LUT2
Text print
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
TEXT
(-) LUT2
Text (Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
PRINTED
PHOTO
(-) LUT2
Printed photo
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
PHOTO
(-) LUT2
Photograph/Text
photograph
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
TEXT
PHOTO
(-) LUT2
Text/Photograph
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
MAP
(-) LUT2
Map (Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
CPY TO CPY/
TXT PRT
(-) LUT2
Copy document/
Text printed
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
CPY TO CPY/
TEXT
(-) LUT2
Copy document/
Text (Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
CPY TO CPY/
PHOTO
(-) LUT2
Copy document/
Printed photo
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
LIGHT
ORIGINAL
(-) LUT2
Light document
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
AUTO
AUTO
(-) LUT2
Auto mode
judgment 0
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
(+) LUT2
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