Sharp MX-4140N / MX-4141N / MX-5140N / MX-5141N (serv.man7) Service Manual ▷ View online
MX-5141N ADJUSTMENTS AND SETTINGS 5 – 2
ADJ 11/
SET1
SET1
Color balance/density adjustment
11D
Copy / Image send /
FAX image quality
adjustment (Individual
adjustment)
FAX image quality
adjustment (Individual
adjustment)
11
D
(1)
Color copy density adjustment (for each color copy
mode) (separately for the low-density area and the
high-density area) (No need to adjust normally)
mode) (separately for the low-density area and the
high-density area) (No need to adjust normally)
46-1
11
D
(2)
Monochrome copy density adjustment (for each
monochrome copy mode) (separately for the low-
density area and the high-density area) (No need to
adjust normally)
monochrome copy mode) (separately for the low-
density area and the high-density area) (No need to
adjust normally)
46-2
11
D
(3)
Color copy color balance, gamma adjustment (for each
color copy mode) (No need to adjust normally)
color copy mode) (No need to adjust normally)
46-10
11
D
(4)
Monochrome copy density, gamma adjustment (for
each monochrome copy mode) (No need to adjust
normally)
each monochrome copy mode) (No need to adjust
normally)
46-16
11
D
(5)
Automatic monochrome (Copy/Scan/FAX) mode
document density scanning operation (exposure
operation) conditions setting (Normally no need to set)
document density scanning operation (exposure
operation) conditions setting (Normally no need to set)
46-19
11
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)
adjustment in the automatic monochrome (Copy/Scan/
FAX) mode (No need to adjust normally)
(Background density adjustment in the scanning
section)
46-32
11
D
(7)
Copy/Scan low density image density adjustment
(for each mode) (No need to adjust normally)
(for each mode) (No need to adjust normally)
46-63
11
D
(8)
Color copy, text, line image reproduction adjustment
(edge gamma, density adjustment) (Text, Map mode)
(No need to adjust normally)
(edge gamma, density adjustment) (Text, Map mode)
(No need to adjust normally)
46-27
11
D
(9)
Monochrome (Copy/Scan/FAX) mode color document
reproduction adjustment (No need to adjust normally)
reproduction adjustment (No need to adjust normally)
46-37
11
D
(10
)
Color copy mode dark area gradation (black
component quantity) adjustment (No need to adjust
normally)
component quantity) adjustment (No need to adjust
normally)
46-38
11
D
(11)
Color (Copy/Scan) mode sharpness adjustment
(No need to adjust normally)
(No need to adjust normally)
46-60
11
D
(12
)
Copy high density image density reproduction setting
(Normally unnecessary to the setting change)
(Normally unnecessary to the setting change)
46-23
11
D
(13
)
Copy color balance adjustment (Single color copy
mode) (No need to adjust normally)
mode) (No need to adjust normally)
46-25
11
D
(14
)
DSPF/RSPF mode (Copy/Scan/FAX) density
adjustment (No need to adjust normally)
adjustment (No need to adjust normally)
46-9
11
D
(15
)
Automatic color balance adjustment by the user
(Copy color balance automatic adjustment ENABLE
setting and adjustment)
(Copy color balance automatic adjustment ENABLE
setting and adjustment)
26-53
11
D
(16
)
Copy gamma, color balance adjustment for each dither
(Automatic adjustment)
(Automatic adjustment)
46-54
11
D
(17
)
Dropout color adjustment (Normally not required)
46-55
11
D
(18
)
Watermark adjustment (Normally not required)
46-66
11E
Printer image quality
adjustment
(Basic adjustment)
adjustment
(Basic adjustment)
11E
(1)
Printer color balance adjustment (Automatic
adjustment)
adjustment)
67-24
11E
(2)
Printer color balance adjustment (Manual adjustment)
67-25
Job No
Adjustment item list
Simulation
MX-5141N ADJUSTMENTS AND SETTINGS 5 – 3
3. Details of adjustment
ADJ 1
Adjust the developing unit
1-A
Adjust the developing doctor gap
This adjustment must be performed in the following cases:
* The developing unit has been disassembled.
* When the print image density is low.
* When there is a blur on the print image.
* When there is unevenness in the print image density.
* The toner is excessively dispersed.
1)
Remove the developing unit from the main unit, and remove
the developing unit upper cover and the developing doctor
cover.
the developing unit upper cover and the developing doctor
cover.
2)
Loosen the developing doctor fixing screw.
ADJ 11/
SET1
Color balance/density adjustment
11F
Printer image quality
adjustment
(Individual adjustment)
adjustment
(Individual adjustment)
11F
(1)
Printer density adjustment (Low density section density
adjustment) (No need to adjust normally)
adjustment) (No need to adjust normally)
67-36
11F
(2)
Printer high density image density reproduction setting
(Supporting the high density section tone gap)
(No need to adjust normally)
(Supporting the high density section tone gap)
(No need to adjust normally)
67-34
11F
(3)
Printer gamma adjustment for each dither
(Automatic adjustment) (No need to adjust normally)
(Automatic adjustment) (No need to adjust normally)
67-54
10F
(4)
Automatic color balance adjustment by the user
(Printer color balance automatic adjustment ENABLE
setting and adjustment)
(Normally unnecessary to the setting change)
(Printer color balance automatic adjustment ENABLE
setting and adjustment)
(Normally unnecessary to the setting change)
26-53
ADJ 12
Manual paper feed tray paper size (width) sensor adjustment
40-2
ADJ 13
DSPF/RSPF tray paper size (width) sensor adjustment
53-6
ADJ 14
Document size detection adjustment
14A
Document size sensor detection point adjustment
41-1
14B
Adjust the sensitivity of the original size sensor
41-2
ADJ 15
Touch panel coordinate setting
65-1
ADJ 16
Fusing paper guide position adjustment
ADJ 17
Print image position, image
magnification ratio, void area, off-
center adjustment (Print engine)
(Manual adjustment)
magnification ratio, void area, off-
center adjustment (Print engine)
(Manual adjustment)
17A
Print image magnification ratio adjustment (main scanning direction) (Print engine)
(Manual adjustment)
(Manual adjustment)
50-10
17B
Print image print area adjustment (Print engine) (Manual adjustment)
50-10 / 50-1
17C
Print image off-center adjustment (Print engine) (Manual adjustment)
50-10
ADJ 18
Scan image magnification ratio
adjustment (Manual adjustment)
adjustment (Manual adjustment)
18A
Scan image magnification ratio adjustment (main scanning direction) (Manual
adjustment) (Document table mode)
adjustment) (Document table mode)
48-1
18B
Scan image magnification ratio adjustment (sub scanning direction) (Manual adjustment)
(Document table mode)
(Document table mode)
48-1 / 48-5
18C
Scan image magnification ratio adjustment (main scanning direction) (Manual
adjustment) (DSPF/RSPF mode)
adjustment) (DSPF/RSPF mode)
48-1
18D
Scan image magnification ratio adjustment (sub scanning direction) (Manual adjustment)
(DSPF/RSPF mode)
(DSPF/RSPF mode)
48-1
ADJ 19
Scan image off-center adjustment
(Manual adjustment)
(Manual adjustment)
19A
Scan image off-center adjustment (Manual adjustment) (Document table mode)
50-12
19B
Scan image off-center adjustment (Manual adjustment) (DSPF/RSPF mode)
50-12 / 50-6
ADJ 20
Copy image position and image loss
adjustment
(Manual adjustment)
adjustment
(Manual adjustment)
20A
Copy image position, image loss, and void area adjustment (Manual adjustment)
(Document table mode)
(Document table mode)
50-1
20B
Image scanning position adjustment (Manual adjustment) (DSPF/RSPF mode)
53-8
20C
Copy image position, image loss, void area adjustment (Manual adjustment)
(DSPF/RSPF mode)
(DSPF/RSPF mode)
50-6
ADJ 21
Finisher and punch unit adjustments (alignment, punch hole position, staple position)
3-10
Job No
Adjustment item list
Simulation
MX-5141N ADJUSTMENTS AND SETTINGS 5 – 4
3)
Insert a thickness gauge of 0.60mm in between 40mm - 70mm
from the edge of the developing doctor.
from the edge of the developing doctor.
4)
Push the developing doctor in the arrow direction, and tighten
the fixing screw of the developing doctor. (Perform the similar
procedure for the front frame and the rear frame.)
the fixing screw of the developing doctor. (Perform the similar
procedure for the front frame and the rear frame.)
5)
Check that the doctor gaps at two positions in 40mm - 70mm
from the both sides of the developing doctor are in the range of
0.625 +/- 0.05mm.
from the both sides of the developing doctor are in the range of
0.625 +/- 0.05mm.
* When inserting a thickness gauge, be careful not to scratch the
developing doctor and the developing roller.
Note for use of a thickness gauge
- Do not insert the gauge diagonally.
- The gauge must pass freely.
- The advisable point of measurement is the MIN point of the MG
roller oscillation.
* Marked point (A) on the follower side (right side) of the MG roller.
1-B
Adjust the developing roller main pole
position
position
This adjustment must be performed in the following cases:
* The developing unit has been disassembled.
* When the print image density is low.
* When there is a blur on the print image.
* When there is unevenness in the print image density.
* The toner is excessively dispersed.
1)
Remove the developing doctor cover, and place the develop-
ing unit on a flat surface.
ing unit on a flat surface.
2)
Attach a piece of string to a sewing needle or pin.
3)
Hold the thread and bring the needle near the developing
roller. (Do not use a paper clip because too heavy. It will not
provide a correct position.)
roller. (Do not use a paper clip because too heavy. It will not
provide a correct position.)
4)
Mark the developing roller surface on the extension line of the
needle with the needle at 2 - 3mm from the developing roller
surface. (Never touch the needle tip with the developing roller.)
needle with the needle at 2 - 3mm from the developing roller
surface. (Never touch the needle tip with the developing roller.)
5)
Measure the distance between the marking position and posi-
tion A of the developing unit frame, and check that it is 37.8 +/-
0.5mm.
tion A of the developing unit frame, and check that it is 37.8 +/-
0.5mm.
If the distance is not within the above range, adjust the devel-
oping roller main pole position in the following procedures.
oping roller main pole position in the following procedures.
MM
MM
MM
MM
MM
MM
MM
MM
A
2
㨪3mm
A
37.8+ 0.5mm
37.8 + 0.5mm
MX-5141N ADJUSTMENTS AND SETTINGS 5 – 5
6)
Remove the developing unit front cover, loosen the fixing
screw of the developing roller main pole adjustment plate, and
move the adjustment plate in the arrow direction to adjust.
screw of the developing roller main pole adjustment plate, and
move the adjustment plate in the arrow direction to adjust.
Repeat procedures 3) - 6) until the developing roller main pole
position comes to the specified range.
position comes to the specified range.
7)
After completion of the adjustment of the developing roller
main pole position, fix the developing roller main pole adjust-
ment plate with the fixing screw.
main pole position, fix the developing roller main pole adjust-
ment plate with the fixing screw.
1-C
Toner density control reference value
setting
setting
This adjustment must be performed in the following cases:
* When developer is replaced.
NOTE: Be sure to execute this adjustment only when developer is
replaced. Never execute it in the other cases.
1)
With the front cabinet open, enter SIM25-2.
EXECUTE
M
K
Adjustment completed
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