Sharp MX-2310U / MX-3111U (serv.man16) Service Manual ▷ View online
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 28
Note for the color balance/density check and adjustments
• For the color balance adjustments, be sure to use the paper
• For the color balance adjustments, be sure to use the paper
specified for color (recommended paper).
Note that, if another kind of paper is used for the color balance
adjustment, proper image qualities (color balance, density) may
not be obtained.
Note that, if another kind of paper is used for the color balance
adjustment, proper image qualities (color balance, density) may
not be obtained.
• When setting the adjustment pattern on the document table in
the automatic color balance adjustment procedures, place 5
sheets of white paper on the adjustment pattern in order to pre-
vent back copying and adverse effects of paper wrinkles as far
as possible.
sheets of white paper on the adjustment pattern in order to pre-
vent back copying and adverse effects of paper wrinkles as far
as possible.
(2) Relationship between the servicing job contents and the
color balance/density check and adjustment
Note that the jobs before and after execution of the color balance/
density check and adjustment depend on the machine status and
the servicing conditions.
Follow the flowchart of the color balance/density adjustment proce-
dures depending on the actual conditions.
There are following four, major cases.
1) When installing (When a printer option is installed)
2) When a periodic maintenance is performed.
3) When a repair, an inspection, or a maintenance is performed.
density check and adjustment depend on the machine status and
the servicing conditions.
Follow the flowchart of the color balance/density adjustment proce-
dures depending on the actual conditions.
There are following four, major cases.
1) When installing (When a printer option is installed)
2) When a periodic maintenance is performed.
3) When a repair, an inspection, or a maintenance is performed.
(When a consumable part is replaced.)
4) When an installation, a repair, or inspection is performed.
(Without replacement of a consumable part)
(3) Copy color balance and density check
Before checking the copy color balance and density, be sure to
execute the following jobs.
* Execute the high density image correction (Process correction)
execute the following jobs.
* Execute the high density image correction (Process correction)
forcibly. (SIM 44-6)
* Execute the half-tone image correction forcibly. (SIM 44-26)
Method 1
Make a copy of the gray test chart (UKOG-0162FCZZ) and a copy
of the servicing color test chart (UKOG-0326FCZZ/UKOG-
0326FC11), and check that they are proper.
a. Note for execution of the color balance and density check
Method 1
Make a copy of the gray test chart (UKOG-0162FCZZ) and a copy
of the servicing color test chart (UKOG-0326FCZZ/UKOG-
0326FC11), and check that they are proper.
a. Note for execution of the color balance and density check
in the color copy mode
To check the copy color balance and density, use the gray test
chart (UKOG-0162FCZZ) and the servicing color test chart
(UKOG-0326FCZZ/UKOG-0326FC11). Set the copy density
level to "3" in the Text/Printed Photo mode (Manual), and make
a copy.
At that time, all the color balance adjustments in the user
adjustment mode must be set to the default (center).
In addition, be sure to use the specified paper for color.
To check the copy color balance and density, use the gray test
chart (UKOG-0162FCZZ) and the servicing color test chart
(UKOG-0326FCZZ/UKOG-0326FC11). Set the copy density
level to "3" in the Text/Printed Photo mode (Manual), and make
a copy.
At that time, all the color balance adjustments in the user
adjustment mode must be set to the default (center).
In addition, be sure to use the specified paper for color.
b. Note for checking the monochrome copy mode density
To check the density, use the gray test chart (UKOG-
0162FCZZ). Set the copy density level to "Manual 3" in the Text/
Printed Photo mode (Manual).
In addition, all the color balance adjustments in the user
adjustment mode must be set to the default (center).
0162FCZZ). Set the copy density level to "Manual 3" in the Text/
Printed Photo mode (Manual).
In addition, all the color balance adjustments in the user
adjustment mode must be set to the default (center).
Check with the gray test chart (UKOG-0162FCZZ)
In the copy density check with the gray test chart, check to insure
the following conditions.
In the copy density check with the gray test chart, check to insure
the following conditions.
For the color (gray) balance, use the servicing color test chart
(UKOG-0326FCZZ/UKOG-0326FC11) to check.
(UKOG-0326FCZZ/UKOG-0326FC11) to check.
Check with the servicing color test chart (UKOG-0326FCZZ/
UKOG-0326FC11)
In the copy color balance check with the servicing color test chart,
check to insure the following conditions.
UKOG-0326FC11)
In the copy color balance check with the servicing color test chart,
check to insure the following conditions.
1
2
3
4
5
6
7
8
9
10
W
SHARP GRAY CHART
SHARP gray chart
Patch 1 is
slightly copied.
slightly copied.
Patch 2 is copied.
(Color copy)
1
2
3
4
5
6
7
8
9
10
W
SHARP GRAY CHART
SHARP gray chart
Patch 1 is not copied.
Patch 2 is
slightly copied.
slightly copied.
Patch 3 is copied.
(Black-and-white copy)
Serviceman chart (Color patch section)
The densities of patches 1 - 6 of
each color are properly balanced.
each color are properly balanced.
Patch 7 is slightly
copied or not copied.
copied or not copied.
(Color copy)
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 29
a. Color copy check items (Check to confirm the following:)
1) There are 12 void areas.
2) Registrations (one point for the main scanning, and one point
1) There are 12 void areas.
2) Registrations (one point for the main scanning, and one point
for the sub scanning) are not shifted.
3) The resolution of 5.0 (5 points) can be seen.
4)
The color difference in gray balance between the F and the R
sides is not so great.
sides is not so great.
5)
There are no white and black streaks.
6)
Color texts are clearly reproduced.
7)
The background density is not so light.
Color difference in gray balance between the F and the R sides
No white and black streaks
No white and black streaks
Background density
Color text reproduction capability
Void
Void
Void
Void
Void
Void
Registration
Resolution
Resolution
Resolution
Resolution
Resolution
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 30
b. Monochrome copy check items (Check to confirm the following:)
1) There are 12 void areas.
2) The resolution of 4.0 (5 points) can be seen.
3) The density difference between the F and the R sides is not so
1) There are 12 void areas.
2) The resolution of 4.0 (5 points) can be seen.
3) The density difference between the F and the R sides is not so
great.
4)
There are no white and black streaks.
5)
The background density is not so light.
6)
The black low-density gradation is copied slightly.
Void
Resolution
Void
Low-density gradation
Resolution
Density difference between the F and the R sides.
No white and black streaks
No white and black streaks
Background density
Resolution
Resolution
Void
Void
Void
Void
Resolution
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 31
(Method 2)
Use SIM46-21 to print the color balance adjustment sheet, and
check each process (CMY) black patch color balance and the black
patch in order to confirm that the color balance adjustment is
proper or not more precisely.
Use SIM46-21 to print the color balance adjustment sheet, and
check each process (CMY) black patch color balance and the black
patch in order to confirm that the color balance adjustment is
proper or not more precisely.
If the color balance of each patch of the process black (CMY mixed
color) is slightly shifted to Magenta, it means that the adjustment is
proper. If the color balance of the adjustment pattern printed in this
mode is slightly shifted to Magenta, it is converted into the natural
gray color balance by the color table in an actual copy mode.
(When the color balance target is DEF 1.)
(4) Printer color balance/density check
color) is slightly shifted to Magenta, it means that the adjustment is
proper. If the color balance of the adjustment pattern printed in this
mode is slightly shifted to Magenta, it is converted into the natural
gray color balance by the color table in an actual copy mode.
(When the color balance target is DEF 1.)
(4) Printer color balance/density check
Before checking the copy color balance and the density, be sure to
execute the following procedures in advance.
* Execute the high density image correction (Process correction)
execute the following procedures in advance.
* Execute the high density image correction (Process correction)
forcibly. (SIM 44-6)
* The half-tone image correction is forcibly executed. (SIM 44-26)
(Method 1)
Execute SIM 64-5 to print the print test pattern.
(Method 1)
Execute SIM 64-5 to print the print test pattern.
When the PCL or the PS printer function is not provided (GDI
model), this method cannot be used for check.
Set each set value to the default and press [EXECUTE] key. The
print test pattern is printed.
model), this method cannot be used for check.
Set each set value to the default and press [EXECUTE] key. The
print test pattern is printed.
The print density must be changed gradually from the lighter level
to the darker level. The density changing direction must not be
reversed. The density level of each color must be almost at the
same level.
to the darker level. The density changing direction must not be
reversed. The density level of each color must be almost at the
same level.
(Method 2)
When the PCL or the PS printer function is not provided (GDI
model), use this method for check.
Use SIM 67-25 to print the color balance adjustment sheet and
compare each process (CMY) black patch color balance and the
black patch to check the color balance.
When the PCL or the PS printer function is not provided (GDI
model), use this method for check.
Use SIM 67-25 to print the color balance adjustment sheet and
compare each process (CMY) black patch color balance and the
black patch to check the color balance.
The print density must be changed gradually from the lighter level
to the darker level. The density changing direction must not be
reversed.
The density level of each color must be almost at the same level.
Patch B may not be copied.
Patch A must not be copied.
If the color balance of each patch of the process black (CMY mixed
color) is slightly shifted to Magenta, it means that the adjustment is
proper. In an actual print mode, it is converted into the natural gray
color balance by the color table. (When the color balance target is
DEF 1.)
to the darker level. The density changing direction must not be
reversed.
The density level of each color must be almost at the same level.
Patch B may not be copied.
Patch A must not be copied.
If the color balance of each patch of the process black (CMY mixed
color) is slightly shifted to Magenta, it means that the adjustment is
proper. In an actual print mode, it is converted into the natural gray
color balance by the color table. (When the color balance target is
DEF 1.)
10-A
Scanner calibration (CCD calibration)
This adjustment must be performed in the following cases:
* When the CCD unit is replaced.
* When a U2 trouble is occurred.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
(1) Note before adjustment
• Check that the table glass, No. 1, 2, 3 mirrors, and the lens sur-
* When the CCD unit is replaced.
* When a U2 trouble is occurred.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
(1) Note before adjustment
• Check that the table glass, No. 1, 2, 3 mirrors, and the lens sur-
face are free from dirt and dust.
(If there is some dust and dirt, wipe and clean with alcohol.)
(If there is some dust and dirt, wipe and clean with alcohol.)
• Check to confirm that the patches in BK1 and BK2 arrays of the
SIT chart (UKOG-0280FCZZ or UKOG-0280FCZ1) are free from
dirt and scratches.
If they are dirty, clean them.
If they are scratched or streaked, replace with new one.
dirt and scratches.
If they are dirty, clean them.
If they are scratched or streaked, replace with new one.
Q
O P
N
M
L
K
J
I
H
G
F
E
D
C
B
A
Y
M
C
Bk
High
density
density
1) The max. density section is not blurred.
2) Patch C or D of each of Y, M, C, and BK is very slightly copied.
Low
density
density
CMY
blend
blend
3) Patch for each of Y, M, C, BK
The patch density is identical between patches or not reversed.
The patch density is changed gradually.
The patch density is changed gradually.
PRINTER CALIBRATION
Q
O P
N
M
L
K
J
I
H
G
F
E
D
C
B
A
Y
M
C
Bk
1) The max. density section is not blurred.
2) Patch C or D of each of Y, M, C, and BK is very slightly copied.
Low density
CMY
blend
blend
3) Patch for each of Y, M, C, BK
The patch density is identical between patches or not reversed.
The patch density is changed gradually.
The patch density is changed gradually.
High density
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