Sharp MX-6500N / MX-7500N (serv.man11) Service Manual ▷ View online
MX-7500N ADJUSTMENTS AND SETTINGS 5 – 52
9-D
(4)
Monochrome copy density, gamma
adjustment (for each monochrome copy
mode) (No need to adjust normally)
Monochrome copy density, gamma
adjustment (for each monochrome copy
mode) (No need to adjust normally)
This adjustment is used to execute the density adjustment for each
density level in each monochrome copy mode.
This adjustment must be performed in the following cases:
* When it is required to change the gamma in each copy mode.
* When there is request from the user.
1) Enter the SIM 46-16 mode.
density level in each monochrome copy mode.
This adjustment must be performed in the following cases:
* When it is required to change the gamma in each copy mode.
* When there is request from the user.
1) Enter the SIM 46-16 mode.
2) Select the density level (point) to be adjusted with the scroll
key.
3)
Enter the adjustment value with 10-key and press [OK] key.
When the adjustment value is increased, the density is
increased. When the adjustment value is decreased, the den-
sity is decreased.
When the arrow key is pressed, the densities are collectively
adjusted.
That is, all the density levels (points) from the low density point
to the high density point can be adjusted collectively.
When [EXECUTE] key is pressed, the adjustment pattern is
printed out.
The density at each density level (point) can be checked by
referring to this printed adjustment pattern. However, it is more
practical to make a copy and check it.
This adjustment pattern can be used to check the color bal-
ance and the density for each density level (point).
When the adjustment value is increased, the density is
increased. When the adjustment value is decreased, the den-
sity is decreased.
When the arrow key is pressed, the densities are collectively
adjusted.
That is, all the density levels (points) from the low density point
to the high density point can be adjusted collectively.
When [EXECUTE] key is pressed, the adjustment pattern is
printed out.
The density at each density level (point) can be checked by
referring to this printed adjustment pattern. However, it is more
practical to make a copy and check it.
This adjustment pattern can be used to check the color bal-
ance and the density for each density level (point).
4)
Make a copy and check the adjustment result.
Switch the adjustment simulation mode and the normal copy
mode alternately, and adjust and check the adjustment result.
Switch the adjustment simulation mode and the normal copy
mode alternately, and adjust and check the adjustment result.
Repeat switching the adjustment simulation mode and the normal
copy mode and changing the adjustment value and checking the
copy until a satisfactory result is obtained.
copy mode and changing the adjustment value and checking the
copy until a satisfactory result is obtained.
9-D
(5)
Automatic monochrome (Copy/Scan/FAX)
mode document density scanning
operation (exposure operation) conditions
setting (Normally no need to set)
Automatic monochrome (Copy/Scan/FAX)
mode document density scanning
operation (exposure operation) conditions
setting (Normally no need to set)
Use for setting the condition of read operation (Exposure) for docu-
ment density in monochrome auto copy mode.
When a copy with correct density is not obtained by type of docu-
ment, change the setting.
This setting is required in the following cases.
* When a proper density copy is not obtained in the monochrome
ment density in monochrome auto copy mode.
When a copy with correct density is not obtained by type of docu-
ment, change the setting.
This setting is required in the following cases.
* When a proper density copy is not obtained in the monochrome
automatic copy mode.
* When a document with images near its lead edge is copied.
* When a document with colored background is copied.
1)
* When a document with colored background is copied.
1)
Enter the SIM 46-19 mode.
Item/Display
Density level
(Point)
Adjustment
value range
value range
Default
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
EXECUTE
EXECUTE
or end of print
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MX-7500N ADJUSTMENTS AND SETTINGS 5 – 53
2) Set REALTIME, STOP or PRE-SCAN to adjustment item AE
STOP COPY. For contents of each setting item, refer to below.
Change the setting value of "AE WIDTH" item to "FULL" or
"PART", in some cases.
Change the setting value of "AE WIDTH" item to "FULL" or
"PART", in some cases.
NOTE:
MODE1: High gamma (Improves the image contrast)
MODE2: Normal gamma
STOP:
Reads the density of 3 - 7 mm area from leading edge of document,
decides the output image density according to the density of that
part. (The output image density is constant at whole area.)
REALTIME:
Reads the density of width of the document one by one, decides
the output image density according to the density of each part of
the document. (The output image density may be not constant at
whole area.)
PRESCAN:
Once the densities on the document surface are scanned, the out-
put 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:
Document density reading area in monochrome auto mode is 3 - 7
mm (leading edge of document) x Document width. No relationship
to PRESCAN MODE
AE WIDTH PART:
Document density reading area in monochrome auto mode is 3 - 7
mm (leading edge of document) x 100 mm (width). No relationship
to PRESCAN MODE
MODE1: High gamma (Improves the image contrast)
MODE2: Normal gamma
STOP:
Reads the density of 3 - 7 mm area from leading edge of document,
decides the output image density according to the density of that
part. (The output image density is constant at whole area.)
REALTIME:
Reads the density of width of the document one by one, decides
the output image density according to the density of each part of
the document. (The output image density may be not constant at
whole area.)
PRESCAN:
Once the densities on the document surface are scanned, the out-
put 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:
Document density reading area in monochrome auto mode is 3 - 7
mm (leading edge of document) x Document width. No relationship
to PRESCAN MODE
AE WIDTH PART:
Document density reading area in monochrome auto mode is 3 - 7
mm (leading edge of document) x 100 mm (width). No relationship
to PRESCAN MODE
Operation in monochrome auto copy mode:
When the density of the document of the read area is light, output
image density is increased by control. When the density of the doc-
ument of the read area is dark, output image density is decreased
by control.
When the density of the document of the read area is light, output
image density is increased by control. When the density of the doc-
ument of the read area is dark, output image density is decreased
by control.
Display/Item
Content
Set value
Default
AE_MODE
Auto exposure mode
MODE1, MODE2
MODE1
AE_STOP_COPY
Auto B/W exposure
Stop (for copy)
Stop (for copy)
REALTIME/
STOP/PRESCAN
STOP/PRESCAN
STOP
AE_STOP_FAX
Auto B/W exposure
Stop (for FAX)
Stop (for FAX)
ON/OFF
ON
AE_STOP_SCAN
Auto B/W exposure
Stop (for scanner)
Stop (for scanner)
REALTIME/
STOP/PRESCAN
STOP/PRESCAN
STOP
AE_FILTER
Auto exposure filter
setting
setting
SOFT
NORMAL
NORMAL
SHARP
SHARP
AE_WIDTH
AE exposure width
FULL
FULL
PART
3 to 7mm
3 to 7mm
100mm
100mm
3 to 7mm
Document table/DSPF mode
Document table mode
DSPF mode
AE WIDTH = FULL
AE WIDTH = PART
AE WIDTH = PART
Document density detection area
MX-7500N ADJUSTMENTS AND SETTINGS 5 – 54
9-D
(6)
Document low density image density
reproduction adjustment in the automatic
monochrome (Copy/Scan/FAX) mode
(No need to adjust normally) (Background
density adjustment in the scanning section)
Document low density image density
reproduction adjustment in the automatic
monochrome (Copy/Scan/FAX) mode
(No need to adjust normally) (Background
density adjustment in the scanning section)
Use for the reproducibility adjustment of document background
density in monochrome auto copy mode.
This adjustment is required in the following cases.
* When there is a desire not to reproduce the background of the
density in monochrome auto copy mode.
This adjustment is required in the following cases.
* When there is a desire not to reproduce the background of the
document. When there is a desire to reproduce the low density
image of the document.
image of the document.
* When there is request from the user.
1) Enter the SIM 46-32 mode.
1) Enter the SIM 46-32 mode.
2) Select the adjustment mode with the scroll key.
3) Enter the adjustment value with 10-key and press [OK] key.
3) Enter the adjustment value with 10-key and press [OK] key.
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 back-
ground and the low density image is decreased.
background and the low density image is increased. When the
adjustment value is decreased, reproducibility of the back-
ground and the low density image is decreased.
9-D
(7)
Copy/Scan low density image density
adjustment (for each mode)
(No need to adjust normally)
Copy/Scan low density image density
adjustment (for each mode)
(No need to adjust normally)
This adjustment is used to adjust the image density in the low den-
sity area in the copy/scanner mode.
This adjustment is required in the following cases.
* When there is a desire not to reproduce the background of the
sity area in the copy/scanner mode.
This adjustment is required in the following cases.
* When there is a desire not to reproduce the background of the
document. When there is a desire to reproduce the low density
image of the document.
image of the document.
* When there is request from the user.
1)
1)
Enter the SIM 46-63 mode.
Item/Display
Content
Setting
range
Default
value
A
COPY: OC
Copy mode (for OC)
1 - 250
196
B
COPY: DSPF
(SIDE1)
(SIDE1)
Copy mode
(for DSPF front surface)
(for DSPF front surface)
1 - 250
196
C
COPY: DSPF
(SIDE2)
(SIDE2)
Copy mode
(for DSPF back surface)
(for DSPF back surface)
1 - 250
196
D
SCAN: OC
Scanner mode (for OC)
1 - 250
196
E
SCAN: DSPF
(SIDE1)
(SIDE1)
Scanner mode
(for DSPF front surface)
(for DSPF front surface)
1 - 250
196
OK
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SCAN: DSPF
(SIDE2)
(SIDE2)
Scanner mode
(for DSPF back surface)
(for DSPF back surface)
1 - 250
196
G
FAX: OC
FAX mode (for OC)
1 - 250
196
H
FAX: DSPF
(SIDE1)
(SIDE1)
FAX mode
(for DSPF front surface)
(for DSPF front surface)
1 - 250
196
I
FAX: DSPF
(SIDE2)
(SIDE2)
FAX mode
(for DSPF back surface)
(for DSPF back surface)
1 - 250
196
Item/Display
Content
Setting
range
Default
value
OK
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2.
MX-7500N ADJUSTMENTS AND SETTINGS 5 – 55
2) Select the copy mode to be adjusted with the scroll key.
3) Enter the adjustment value with 10-key and press [OK] key.
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 back-
ground and the low density image is decreased.
background and the low density image is increased. When the
adjustment value is decreased, reproducibility of the back-
ground and the low density image is decreased.
9-D
(8)
Color copy, text, line image reproduction
adjustment (edge gamma, density
adjustment) (Text, Map mode)
(No need to adjust normally)
Color copy, text, line image reproduction
adjustment (edge gamma, density
adjustment) (Text, Map mode)
(No need to adjust normally)
Adjustment 1
By changing Text/Printed Photo, Text/Photograph, automatic copy
mode Text, line image edge section gamma and the density, the
reproducibility of text and line profile can be varied optionally.
With this adjustment, the density and the thickness of fine text and
lines can be varied.
Check the result of this adjustment by text/printed photo copy mode
(manual).
This adjustment is required in the following cases.
* When the reproducibility of text and line copy image is to be
By changing Text/Printed Photo, Text/Photograph, automatic copy
mode Text, line image edge section gamma and the density, the
reproducibility of text and line profile can be varied optionally.
With this adjustment, the density and the thickness of fine text and
lines can be varied.
Check the result of this adjustment by text/printed photo copy mode
(manual).
This adjustment is required in the following cases.
* When the reproducibility of text and line copy image is to be
changed.
* When there is request from the user.
1)
Enter the SIM 46-27 mode.
2)
Select the mode to be adjusted with the scroll key.
3)
Enter the adjustment value with 10-key.
When the adjustment values of item A and C are changed, the
gamma at the line edge section is changed.
When the adjustment value is increased, the image contrast of
character edge and line edge is increased. When the adjust-
ment value is decreased, the image contrast of character and
line edge is decreased.
When the adjustment value of the adjustment item B and D are
increased, the image density at the line edge section is
increased, and vice versa.
When the adjustment values of item A and C are changed, the
gamma at the line edge section is changed.
When the adjustment value is increased, the image contrast of
character edge and line edge is increased. When the adjust-
ment value is decreased, the image contrast of character and
line edge is decreased.
When the adjustment value of the adjustment item B and D are
increased, the image density at the line edge section is
increased, and vice versa.
4)
Press [OK] key.
5)
Make a copy in monochrome text/printed photo copy mode
(manual), check the copy.
When checking, use a copy of the document with a thin char-
acter and line image.
If a satisfactory result is not obtained, return to the SIM 46-27
mode and change the adjustment value.
Repeat the above procedures until a satisfactory result is
obtained.
(manual), check the copy.
When checking, use a copy of the document with a thin char-
acter and line image.
If a satisfactory result is not obtained, return to the SIM 46-27
mode and change the adjustment value.
Repeat the above procedures until a satisfactory result is
obtained.
Display/Item
Content
Set
value
Default
A
COLOR COPY :
TEXT/PRINTED PHOTO
TEXT/PRINTED PHOTO
Text print (color copy)
1 - 9
3
B
COLOR COPY : TEXT
Text (color copy)
1 - 9
3
C
COLOR COPY :
PRINTED PHOTO
PRINTED PHOTO
Printed photo
(color copy)
(color copy)
1 - 9
5
D
COLOR COPY :
PHOTOGRAPH
PHOTOGRAPH
Photograph
(color copy)
(color copy)
1 - 9
5
E
COLOR COPY :
TEXT/PHOTO
TEXT/PHOTO
Text/Photograph
(color copy)
(color copy)
1 - 9
3
F
COLOR COPY : MAP
Map (color copy)
1 - 9
5
G
COLOR COPY : LIGHT
Light document
(color copy)
(color copy)
1 - 9
6
H
COLOR COPY :
TEXT/PRINTED PHOTO
(COPY TO COPY)
TEXT/PRINTED PHOTO
(COPY TO COPY)
Copy document,
Text print (color copy)
Text print (color copy)
1 - 9
5
I
COLOR COPY : TEXT
(COPY TO COPY)
(COPY TO COPY)
Copy document, Text
(color copy)
(color copy)
1 - 9
5
J
COLOR COPY :
PRINTED PHOTO
(COPY TO COPY)
PRINTED PHOTO
(COPY TO COPY)
Copy document,
Printed photo
(color copy)
Printed photo
(color copy)
1 - 9
5
K
COLOR PUSH:TEXT/
PRINTED PHOTO
PRINTED PHOTO
Text print
(color PUSH)
(color PUSH)
1 - 9
3
L
COLOR PUSH:TEXT
Text (color PUSH)
1 - 9
3
M
COLOR PUSH:
PRINTED PHOTO
PRINTED PHOTO
Printed photo
(color PUSH)
(color PUSH)
1 - 9
5
N
COLOR PUSH:
PHOTOGRAPH
PHOTOGRAPH
Photograph
(color PUSH)
(color PUSH)
1 - 9
5
O
COLOR PUSH:
TEXT/PHOTO
TEXT/PHOTO
Text/Photograph
(color PUSH)
(color PUSH)
1 - 9
3
P
COLOR PUSH: MAP
Map (color PUSH)
1 - 9
5
Display/Item
(Copy mode)
Content
Adjust-
ment
range
Default
A
BLACK TEXT
(SLOPE)
(SLOPE)
Black character edge gamma
skew adjustment
skew adjustment
1 - 99
50
B
BLACK TEXT
(INTERCEPT)
(INTERCEPT)
Black character edge density
adjustment
adjustment
1 - 99
50
C
COLOR TEXT
(SLOPE)
(SLOPE)
Color character edge gamma
skew adjustment
skew adjustment
1 - 99
50
D
COLOR TEXT
(INTERCEPT)
(INTERCEPT)
Color character edge density
adjustment
adjustment
1 - 99
50
E
ED TEXT
(SLOPE)
(SLOPE)
Text/Map mode gamma
adjustment (Text/Map mode)
adjustment (Text/Map mode)
1 - 99
50
F
ED TEXT
(INTERCEPT)
(INTERCEPT)
Text/Map mode density
adjustment (Text/Map mode)
adjustment (Text/Map mode)
1 - 99
50
OK
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