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MX-6500N MX-7500N (serv.man19)
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98
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Service Manual
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Device
Copying Equipment / Section 5 Adjustments and Settings
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mx-6500n-mx-7500n-sm19.pdf
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Sharp MX-6500N / MX-7500N (serv.man19) Service Manual ▷ View online

MX-7500N  ADJUSTMENTS AND SETTINGS  5 – 57
2) Select the mode to be adjusted with the scroll key.
3) Enter the adjustment value with 10-key.
When the adjustment value of adjustment item A is increased,
copy density of red image is decreased. When the adjustment
value is decreased, copy density of red image is increased.
When the adjustment value of adjustment item B is increased,
copy density of red image is increased. When the adjustment
value is decreased, copy density of red image is decreased.
4) Press [OK] key.
5) Make a copy in monochrome text/printed photo copy mode
(manual), check the copy.
If a satisfactory result is not obtained, return to the SIM 46-37
mode and change the adjustment value.
Repeat the above procedures until a satisfactory result is
obtained.
 
9-D
(10)
Color copy mode dark area gradation (black 
component quantity) adjustment 
(No need to adjust normally)
Use to adjust the 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
changes.
This adjustment is required in the following cases.
* When reproduction as solid of black image is required.
* To make the black background and the dark area darker
* When change of gradation of the shade part is required.
* When there is request from the user.
1) Enter the SIM 46-38 mode.
2)
Select the AUTO MODE or the MANUAL MODE with the mode
key.
3)
Select the mode to be adjusted with the scroll key.
Display/Item 
(Copy mode)
Content
Adjustment 
range
Default
A
R/G
Gray making setting (R/G)
0 - 99
21
B
B/G
Gray making setting (B/G)
0 - 99
0
(-)LUT2
 
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Display/Item (Copy mode)
Select button
Content
Default
MANUAL
TEXT PRT
(-) LUT2
Text print 
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
TEXT
(-) LUT2
Text (Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
PRINTED 
PHOTO
(-) LUT2
Printed photo 
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
PHOTO
(-) LUT2
Photograph/
Text 
photograph 
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
TEXT PHOTO
(-) LUT2
Text/
Photograph 
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
MAP
(-) LUT2
Map (Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
CP ORG/
TEXT PRT
(-) LUT2
Copy 
document/
Text printed 
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
COPY ORG/
TEXT
(-) LUT2
Copy 
document/
Text (Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
COPY ORG/
PHOTO
(-) LUT2
Copy 
document/
Printed photo 
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
LIGHT 
ORIGINAL
(-) LUT2
Light 
document 
(Manual)
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
MX-7500N  ADJUSTMENTS AND SETTINGS  5 – 58
4) Press the black ingredient amount select button.
When reproduction as solid of black image is required: 
Selects + button
When there is desire to darken copy of black image: 
Selects + button
When a dark color image is reproduced in the black: 
Selects - button
5) Make a copy in color copy mode and check the copy.
If a satisfactory result is not obtained, return to the SIM 46-38 mode
and change the adjustment value.
Repeat the above procedures until a satisfactory result is obtained.
 
9-D
(11)
Color (Copy/Scan) mode sharpness 
adjustment (No need to adjust normally)
Use for sharpness adjustment of the high density image in color
copy mode.
This adjustment changes smoothness (asperity) in the image
shade part.
This adjustment is required in the following cases.
* When changing the sharpness of copy image in copy mode.
(obtain crispy image) (decreases moire)
* When there is desire to improving smoothness in the image
shade part (for decrease of asperity)
* To make the black background and the dark area darker.
* To reproduce the gradation change in the dark area.
* When there is request from the user.
1)
Enter the SIM 46-60 mode.
AUTO
AUTO0
(-) LUT2
Auto mode 
judgment 0
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
AUTO1
(-) LUT2
Auto mode 
judgment 1
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
AUTO2 (-) 
LUT2
Auto 
mode 
judgment 2
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
AUTO3
(-) LUT2
Auto mode 
judgment 3
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
AUTO4
(-) LUT2
Auto mode 
judgment 4
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
AUTO5
(-) LUT2
Auto mode 
judgment 5
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
AUTO6
(-) LUT2
Auto mode 
judgment 6
NORMAL
(-) LUT1
NOMAL
(+) LUT1
(+) LUT2
Display/Item (Copy mode)
Select button
Content
Default
OK 
10-key 
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2.
MX-7500N  ADJUSTMENTS AND SETTINGS  5 – 59
2) Select the mode to be adjusted with the scroll key.
3) Input numeric value corresponding to sharpness level (filter
process mode).
-  Adjustment item A:
When selecting AUTO, filter is selected according to dot pat-
tern state automatically and adjusts sharpness.
Input small numeric value to obtain crispy image. Input large
numeric value to decrease moire.
-  Adjustment item B:
Select HIGH to obtain clear images. Select SOFT to reduce
moire.
-  Adjustment item C - J:
When setting ON, smoothness in the image shade part
improves by applying soft filter. (asperity decreases)
4) Press [OK] key.
5) Make a copy and check the copy image.
If a satisfactory result is not obtained, return to the SIM 46-60 mode
and change the adjustment value.
Repeat the above procedures until a satisfactory result is obtained.
 
9-D
(12)
Copy high density image density 
reproduction setting (Normally 
unnecessary to the setting change)
If a tone gap occurs on part of high density in copy mode, or if there
is necessity to increase the density of the part of high density,
change the setting.
This setting is normally not required. When, however, there are
case of following, change the setting.
* When a tone gap occurs on part of high density.
* When there is a necessity to increase the density of the part of
high density.
* When there is request from the user.
a. Adjustment procedure
1)
Enter the SIM 46-23 mode.
Display/Item
Content
Setting range
Default
NOTE
A
SCREEN FILTER 
LEVEL
H
Sharpness (filter) adjustment of dot pattern 
image in auto copy mode
Strong emphasis
1
3 (Auto)
Apply to auto copy mode 
only
L
Soft emphasis
2
AUTO
Auto
3
B
AUTOMODE 
FILTER LEVEL
SOFT
Sharpness (filter) adjustment for the auto 
copy mode
SOFT
1
(CENTER)
CENTER
CENTER
2
HIGH
HIGH
3
C
COLOR COPY:
CMY
OFF
Soft filter applying setting to C, M, Y image 
in color copy mode
OFF
0
1 (ON)
Available for the high 
density image except 
text and line image
ON
ON
1
D
COLOR COPY:K
OFF
Soft filter applying setting to K image in 
color copy mode
OFF
0
1 (ON)
ON
ON
1
E
SINGLE COLOD:
CMY
OFF
Soft filter applying setting to C, M, Y image 
in single color copy mode
OFF
0
1 (ON)
When setting ON, 
smoothness in the image 
shade part improves by 
applying soft filter. 
(asperity decreases)
ON
ON
1
F
2 COLOR COPY:
CMY
OFF
Soft filter applying setting to C, M, Y image 
in 2-color copy mode
OFF
0
1 (ON)
ON
ON
1
G
2 COLOR COPY:
K
OFF
Soft filter applying setting to K image in 
color copy mode
OFF
0
1 (ON)
ON
ON
1
H
B/W COPY
OFF
Soft filter applying setting in monochrome 
copy mode
OFF
0
1 (ON)
ON
ON
1
I
COLOR PUSH:
RGB
OFF
Soft filter applying setting to image in push 
scan color mode
OFF
0
1 (ON)
ON
ON
1
J
B/W PUSH
OFF
Soft filter applying setting to image in push 
scan monochrome mode
OFF
0
1(ON)
ON
ON
1
OK 
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2.
MX-7500N  ADJUSTMENTS AND SETTINGS  5 – 60
2) Select the item A, B with the scroll key.
* If a tone gap occurs on part of high density, set 0 to item A and B
The density of high density part decreases. However, the tone
gap is better.
* In case of more increase of the density on high density part, set 1
to item A and B.
The tone gap may occur in high density part.
CAUTION: Do not change the setting values of item C, D, E and F.
If these values are changed, density of the high density
part is changed.
If these values are changed, be sure to execute the
copy color balance density adjustment. (Auto adjust-
ment)
 
 
9-D
(13)
Copy color balance adjustment 
(Single color copy mode) 
(No need to adjust normally)
This adjustment is used to set the color balance and the density in
the single color copy mode to the user's request.
The adjustment is made by changing Y, M, C components of each
color.
This adjustment is not required normally, but executed when there
is a request from the user.
When the default adjustment value is changed, this adjustment is
required in the following cases.
* When it is required to change the color balance in the single
color copy mode.
* When there is request from the user.
a. Adjustment procedure
1)
Enter the SIM 46-25 mode.
2)
Select the color to be adjusted with the scroll key.
3)
Select the color (YMC) to be adjusted with the color key.
4)
Enter the adjustment value with 10-key.
5)
Press [OK] key.
6)
Make a copy in the single color copy mode and check the
copy.
If a satisfactory result is not obtained, return to the SIM 46-25 mode
and change the adjustment value.
Repeat the above procedures until a satisfactory result is obtained.
 
Display/Item
Content
Setting 
range
Default
A
CMY 
(0:ENABLE 
1:DISABLE)
0
CMY engine maximum 
density correction mode 
Enable
0 - 1
0
1
CMY engine maximum 
density correction mode 
Disable
B

(0: ENABLE 
1: DISABLE)
0
K engine maximum density 
correction mode Enable
0 - 1
1
1
K engine maximum 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
Display/Item
Adjustment range
Default
C
M
Y
A
RED
0 - 255
0
255
200
B
GREEN
0 - 255
255
0
255
C
BLUE
0 - 255
255
200
0
D
YELLOW
0 - 255
0
0
255
E
MAGENTA
0 - 255
0
255
0
F
CYAN
0  -  255
255
0
0
OK 
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