Sharp MX-7090N / MX-8090N (serv.man3) Service Manual ▷ View online
MX-8090N MX-7090N/8090N (MAIN UNIT) 2 – 16
The printer color balance adjustment is automatically per-
formed and the color balance check patch image is printed out.
If there is any streak or unclear print on the printed check pat-
If there is any streak or unclear print on the printed check pat-
tern, check the print engine for any problems.
8) The initial setting menu of the half-tone image correction is dis-
played. Press [OK] key.
The initial setting of the half-tone image correction is per-
The initial setting of the half-tone image correction is per-
formed.
9) Wait until [EXECUTE] key is displayed. When it is displayed,
press it.
The half-tone image correction is performed.
The half-tone image correction is performed.
10) When "COMPLETED THIS PROCEDURE" is displayed, the
adjustment operation is completed.
Cancel SIM46-74.
Cancel SIM46-74.
The adjustment result becomes valid only when the both
adjustments in the copy mode and in the printer mode are
completed.
For example, if the copy color balance adjustment (automatic
For example, if the copy color balance adjustment (automatic
adjustment) is performed and the simulation is canceled, the
adjustment result is invalid.
11) Check the copy color balance and density.
(Refer to the item of the copy color balance and density
check.)
12) Check the printer color balance and density.
(Refer to the item of the printer color balance and density
check.)
If the color balance or density is not in the satisfactory level even
after execution of the automatic and manual adjustments, there
may be another cause.
Troubleshoot the cause, repair or perform necessary works, and
Troubleshoot the cause, repair or perform necessary works, and
repeat the adjustment from the beginning.
If color balance or density is not satisfied, adjust the copy and
If color balance or density is not satisfied, adjust the copy and
printer color balance by SIM 46-74.
(4) Copy color balance and density check
Method
Make a copy of the gray test chart (UKOG-0162FCZZ) and a copy
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
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 adjust-
At that time, all the color balance adjustments in the user adjust-
ment mode must be set to the default (center).
In addition, be sure to use the specified paper for color.
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 adjust-
In addition, all the color balance adjustments in the user adjust-
ment mode must be set to the default (center).
PRINTER CALIBRATION
3
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1) The max. density section is not blurred.
2) Patch C or D of each of Y, M, C, and BK is copied.
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
Low density
ǂǂǂ6,08/$7,21ǂǂ12
&/26(
7(67
(1*,1($872$'-8670(176(59,&(
&21),507+($'-867('3$7&+$1'35(66>2.@725(*,67(57+,63$7&+'$7$
2.
ǂǂǂ6,08/$7,21ǂǂ12
&/26(
7(67
(1*,1($872$'-8670(176(59,&(
5(75<
&203/(7(7+,6352&('85(
3/($6(48,77+,602'(
2.
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MX-8090N MX-7090N/8090N (MAIN UNIT) 2 – 17
[Check with the gray test chart (UKOG-0162FCZZ)]
In the copy density check with the gray test chart, check to insure
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.
[Check with the servicing color test chart (UKOG-0326FCZZ/
UKOG-0326FC11)]
In the copy color balance check with the servicing color test chart,
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-8090N MX-7090N/8090N (MAIN UNIT) 2 – 18
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.
5) There are no white and black streaks.
6) Color texts are clearly reproduced.
7) Solid density is not so light.
6) Color texts are clearly reproduced.
7) Solid density is not so light.
Solid density is not so light
IJ
MX-8090N MX-7090N/8090N (MAIN UNIT) 2 – 19
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) Solid density is not so light.
6) The black low-density gradation is copied slightly.
5) Solid density is not so light.
6) The black low-density gradation is copied slightly.
Solid density is not so light
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