Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man36) Service Manual ▷ View online
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 2
ADJ 10/
SET1
Color balance and density
adjustment
10D Copy / Image send / FAX
image quality adjustment
(Individual adjustment)
10D
(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)
46-32
10D
(7)
Copy/Scan low density image density adjustment
(for each mode) (No need to adjust normally)
46-63
10D
(8)
Color copy, text, line image reproduction
adjustment (edge gamma, density adjustment)
(Text, Map mode) (No need to adjust normally)
46-27
10D
(9)
Monochrome (Copy/Scan/FAX) mode color
document reproduction adjustment
(No need to adjust normally)
46-37
10D
(10)
Color copy mode dark area gradation (black
component quantity) adjustment
(No need to adjust normally)
46-38
10D
(11)
Color (Copy/Scan) mode sharpness adjustment
(No need to adjust normally)
46-60
10D
(12)
Copy high density image density reproduction
setting
(Normally unnecessary to the setting change)
46-23
10D
(13)
Copy color balance adjustment (Single color copy
mode)
(No need to adjust normally)
46-25
10D
(14)
RSPF mode (Copy/Scan/FAX) density adjustment
(No need to adjust normally
46-9
10D
(15)
Automatic color balance adjustment by the user
(Copy color balance automatic adjustment
ENABLE setting and adjustment)
26-53
10D
(16)
Copy gamma, color balance adjustment for each
dither
(Automatic adjustment)
46-54
10D
(17)
Dropout color adjustment (Normally not required)
46-55
10D
(18)
Watermark adjustment (Normally not required)
46-66
10E Printer image quality
adjustment (Basic adjustment)
10E
(1)
Printer color balance adjustment
(Automatic adjustment)
67-24
10E
(2)
Printer color balance adjustment
(Manual adjustment)
67-25
10F Printer image quality
adjustment
(Individual adjustment)
10F
(1)
Printer density adjustment (Low density section
density adjustment) (No need to adjust normally)
67-36
10F
(2)
Printer high density image density reproduction
setting (Supporting the high density section tone
gap) (No need to adjust normally)
67-34
10F
(3)
Printer gamma adjustment for each dither
(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)
26-53
ADJ 11
Paper size sensor adjustment
11A Manual paper feed tray paper size (width) sensor adjustment
40-2
11B RSPF paper feed tray document size (width) sensor adjustment
53-6
ADJ 12
Document size detection
adjustment
12A Document size sensor detection point adjustment
41-1
12B Adjust the sensitivity of the original size sensor
41-2
ADJ 13
Touch panel coordinate setting
65-1
ADJ 14
Fusing paper guide position adjustment
ADJ 15
Print image position, image
magnification ratio, void area,
off-center adjustment (Print
engine) (Manual adjustment)
15A Print image magnification ratio adjustment (main scanning direction) (Print engine)
(Manual adjustment)
50-10
15B Print image print area adjustment (Print engine) (Manual adjustment)
50-10/50/1
15C Print image off-center adjustment (Print engine) (Manual adjustment)
50-10
ADJ 16
Scan image magnification ratio
adjustment (Manual adjustment)
16A Scan image magnification ratio adjustment (main scanning direction) (Manual adjustment)
(Document table mode)
48-1
16B Scan image magnification ratio adjustment (sub scanning direction) (Manual adjustment)
(Document table mode)
48-1/48-5
16C Scan image magnification ratio adjustment (main scanning direction) (Manual adjustment)
(RSPF mode)
48-1
16D Scan image magnification ratio adjustment (sub scanning direction) (Manual adjustment)
(RSPF mode)
48-1
ADJ 17
Scan image off-center
adjustment (Manual adjustment)
17A Scan image off-center adjustment (Manual adjustment) (Document table mode)
50-12
17B Scan image off-center adjustment (Manual adjustment) (RSPF mode)
50-12/50-6
Job No.
Adjustment item list
Simulation
MX-3640N 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.
Be careful not to attach a fingerprint, oil, grease, or a foreign mate-
rial on the DV roller during the procedure. Also be careful not to
scratch the DV roller surface.
rial on the DV roller during the procedure. Also be careful not to
scratch the DV roller surface.
If a fingerprint, oil, grease, or a foreign material is erroneously
attached to the DV roller during the procedure, remove all devel-
oper from the developing unit and clean the roller with alcohol.
attached to the DV roller during the procedure, remove all devel-
oper from the developing unit and clean the roller with alcohol.
Do not exert force when holding the DV Unit.
1)
Remove the developing unit from the main unit, and remove
the developing doctor cover.
the developing doctor cover.
2)
Loosen the developing doctor fixing screw.
3)
Insert a thickness gauge of 0.65mm in between 40mm - 70mm
from the edge of the developing doctor.
from the edge of the developing doctor.
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
Do not insert the gauge diagonally.
The gauge must pass freely.
The advisable point of measurement is the MIN point of the
DV roller oscillation.
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
0.65
from the both sides of the developing doctor are in the range of
0.65
0.05mm.
1-B
Adjust the developing roller main pole
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.
Be careful not to leave a fingerprint, oil, grease, or a foreign mate-
rial on the DV roller during the procedure. Also be careful not to
scratch the DV roller surface.
rial on the DV roller during the procedure. Also be careful not to
scratch the DV roller surface.
If a fingerprint, oil, grease, or a foreign material is erroneously
attached to the DV roller during the procedure, remove all devel-
oper from the developing unit and clean the roller with alcohol.
attached to the DV roller during the procedure, remove all devel-
oper from the developing unit and clean the roller with alcohol.
Do not exert force when holding the DV Unit.
ADJ 18
Copy image position, image loss
adjustment (Manual adjustment)
adjustment (Manual adjustment)
18A
Copy image position, image loss, void area adjustment (Manual adjustment)
(Document table mode)
(Document table mode)
50-1
18B
Image scanning position adjustment (Manual adjustment) (RSPF mode)
53-8
18C
Copy image position, image loss, void area adjustment (Manual adjustment) (RSPF mode)
50-6
ADJ 19
Finisher and punch unit adjustments (alignment, punch hole position, staple position)
3-10
Job No.
Adjustment item list
Simulation
40mm
70mm
40mm
70mm
40mm
70mm
40mm
70mm
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 4
1) Remove the developing doctor cover, and place the develop-
ing unit on a flat surface.
2) Attach a piece of string to a sewing needle or pin.
3) Hold the thread and br ing the ne edle near the developing
3) Hold the thread and br ing the ne edle near the developing
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 fr om the developing roller
edge. (Never touch the needle tip to the developing roller.)
Marking must be made at the edge section (non-image area)
of the DV roller.
5) Measure the d istance between the marking position and the
DV doctor edge A p osition, and confirm that the distance is
20.0 0.5mm.
If the distance is not within the above r ange, adjust the D V
If the distance is not within the above r ange, adjust the D V
roller main pole position in the following procedures.
6) Remove the developing unit rear cover, loosen the fixing screw
of the DV r oller main pole adjustment plate, and move the
adjustment plate in the arrow direction to adjust.
Repeat procedures 3) - 6) until the DV roller main pole position
comes to the specified range.
7) After completion of the adjustment of the DV ro ller main pole
position, fix the DV roller main pole adjustment plate with the
fixing screw.
1-C
Toner density control reference value
setting
This adjustment must be performed in the following cases:
* When developer is replaced.
* When developer is replaced.
Be sure to execute this adjustment only when developer is
replaced. Never execute it in the other cases.
Perform the toner density reference control level adjustment with
the toner cartridges removed.
If adjustment is performed with toner cartridges installed, the EE-
If adjustment is performed with toner cartridges installed, the EE-
EL trouble code or an over-toned condition may occur.
1) With the front cabinet open, enter SIM25-2.
MM
0.5mm
20.0
EXECUTE
M
K
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MX-3640N ADJUSTMENTS AND SETTINGS 5 – 5
2) Close the front cabinet.
3) Select a developing unit to be adjusted.
4) When [EXECUTE] key is pressed, it is highlighted. The DV
3) Select a developing unit to be adjusted.
4) When [EXECUTE] key is pressed, it is highlighted. The DV
roller rotates, and the toner density sensor detects toner den-
sity, and the output value is displayed.
The above operation is executed for 1.5 minutes, and the aver-
The above operation is executed for 1.5 minutes, and the aver-
age value of the toner density sensor detection leve l is set
(saved) as the reference toner density control value.
When the reference toner density control adjustment operation
When the reference toner density control adjustment operation
is completed, [EXECUTE] key returns to normal from highlight.
This makes known about whether the adjustment operation is
completed or not.
The above operation is executed each of the lower speed
The above operation is executed each of the lower speed
mode and the middle speed mode, and the re ference toner
density control value is set for each of them.
If the operation is inter rupted within 1.5 minutes, the adjust-
ment result is not reflected.
When [EXECUTE] key is pr essed during the operation, the
When [EXECUTE] key is pr essed during the operation, the
operation is stopped and [EXECUTE] key returns to the normal
display.
If [EE-EU], [EE-EL], or [EE-EC] is displayed, setting of the ref-
If [EE-EU], [EE-EL], or [EE-EC] is displayed, setting of the ref-
erence toner density control value is not completed normally.
Troubleshoot the cause, remove the cause, and perform set-
Troubleshoot the cause, remove the cause, and perform set-
ting again.
5) Cancel SIM 25-2.
6) Confirm that "Install the toner cartridge" is displayed, and
6) Confirm that "Install the toner cartridge" is displayed, and
install the toner cartridge by the following procedures.
7) Shake the toner cartridge horizontally several times.
8) Open the front cabinet, and insert each toner cartridge.
Be sure to install the color cartridges to their proper positions.
Avoid installation to a different color position.
Do not forcibly insert the toner cartridge.
Push it in until the cartridge is securely locked in place.
Developing units removed, be sure to re move the toner car -
tridges as well to prevent toner clogging.
Color toner cartridge positions
9) Close the front cabinet.
10) Confirm that " Toner replenishment in prog ress" is displayed,
10) Confirm that " Toner replenishment in prog ress" is displayed,
and wait until the display disappears. (It takes 30 sec - 6 min.)
This procedure is for checking the toner supply operation from
the toner cartridge to the D V unit. T he operation time d iffers
depending on the toner quantity in the toner cartridge, uneven
distribution of toner , and the interna l state of the toner car-
tridge.
Do not perform operations which interrupt the above operation,
such as opening the front cover, entering the SIM mode, and
turning OFF/ON the power. If this precaution is ignored, Trou-
ble codes F2-40 - 43 or F2-64 - 67 or a over-toned condition
may occur.
When replacing developer, always replace all the three color s of
Yellow, Magenta, and Cyan.
If only one color is replaced, color balance may be adversely
If only one color is replaced, color balance may be adversely
affected. Black developer can be replaced individually.
When developer is replaced, be sure to p erform the color balance
adjustment.
When not replacing the developer, do not execute SIM25-2.
Error
display
Error name
Detail of error
EE-EL
EL abnormality Sensor output level less than 1.0V, or control
voltage over 8.0V.
EE-EU
EU abnormality Sensor output level over 2.3V, or control
voltage less than 2.0V.
EE-EC
EC abnormality Sensor output level: other than 1.65 0.13V
Y
M
C
BK
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