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 – 74
1) Enter the SIM 50-10 mode.
2) Set A4 (11 x 8.5") paper to all the paper feed trays. Select an
adjustment item of the target paper feed tray among items B -
N and enter t he adjustment value. T hen select item "O" to
select the paper feed tray which is to be used for executing
test printing.
3) Press [EXECUTE] key.
The adjustment pattern is printed.
4) Check the adjustment pattern to confirm that the items below
are in the range of the standard values.
If the above condition is not satisfied, or if it is set to a desired
condition, execute the simulation 50-1.
Feed paper from all the paper feed trays to confirm.
5) Enter the SIM 50-1 mode.
6) Select an adjustment item (DENA, DENB, FRONT/REAR) with
the scroll key, enter the adjustment value, and press [OK] key.
When the adjustment value is increased, the void a rea is
increased. When the adjustment value is de creased, the void
area is decreased.
When the adjustment value is changed by 1, the void area is
When the adjustment value is changed by 1, the void area is
changed by 0.1mm.
The adjustment value and the actual void area are related as
follows:
Adjustment value/10 = Actual void area
Adjustment value/10 = Actual void area
When the amount of the rear edge void is dif ferent between
each paper feed tr ay, change the ad justment value of item
(DENB-XXX) in SIM50-1 and adjust.
The adjustment item (DENB) have a effect on the paper of all
The adjustment item (DENB) have a effect on the paper of all
paper feed tray.
Content
Standard adjustment value
X
Lead edge void area
4.0 1.0mm
Y
Rear edge void area
2.0 - 5.0mm
Z1/Z2
FRONT/REAR void area
2.0 2.0mm
EXECUTE
End of print
EXECUTE
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X
Y
Z2
2.0
2.0
4.0 1.0mm
2.0 - 5.0mm
Z1
2.0
2.0
2.0mm
2.0mm
Item/Display
Content
Setting
range
Default
value
Void area
adjustment
DENA
Lead edge void area
adjustment
1 - 99
40
DENB
Rear edge void area
adjustment
1 - 99
30
FRONT/
REAR
FRONT/REAR void
area adjustment
1 - 99
20
Sub
scanning
direction
print area
correction
value
DENB-MFT
Manual feed
correction value
1 - 99
50
DENB-CS1
Tray 1 correction value
1 - 99
50
DENB-CS2
Tray 2 correction value
1 - 99
50
DENB-CS3
Tray 3 correction value
1 - 99
50
DENB-CS4
Tray 4 correction value
1 - 99
50
DENB-LCC
LCC correction value
1 - 99
50
DENB-ADU
ADU correction value
1 - 99
50
DENB-HV
Heavy paper
correction value
1 - 99
50
OK
10-key
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MX-3640N ADJUSTMENTS AND SETTINGS 5 – 75
That is, adjustment value of item (DENB-XXX) fine adjusts to
adjustment item (DENB) for each paper tray.
After execution of the above, pe rform procedures 1) - 4) to
After execution of the above, pe rform procedures 1) - 4) to
check that the void area is within the specified range.
Though the lead edge void area adjustment value is proper, if
Though the lead edge void area adjustment value is proper, if
the lead edge void ar ea is not within the specified range,
change the adjustment value of item (RRCB-XXX) in SIM 50-1.
Repeat the above procedures until a satisfactory result is obtained.
15-C
Print image off-center adjustment
(Print engine) (Manual adjustment)
This adjustment must be performed in the following cases:
* When the LSU is replaced or removed.
* When a paper tray is replaced.
* When the paper tray section is disassembled.
* When ADJ 3A Print engine image magnification ratio adjustment
* When the LSU is replaced or removed.
* When a paper tray is replaced.
* When the paper tray section is disassembled.
* When ADJ 3A Print engine image magnification ratio adjustment
(Main scanning direction) is performed.
* When the manual feed tray is replaced.
* When the manual feed tray is disassembled.
* When the duplex mode paper transport section is disassembled.
* When the registration roller section is disassembled.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
* When the manual feed tray is disassembled.
* When the duplex mode paper transport section is disassembled.
* When the registration roller section is disassembled.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
Before execution of this adjustment, check to insu re the following
item.
* The print image magnification ration adjustment (ADJ 15A) (main
* The print image magnification ration adjustment (ADJ 15A) (main
scanning direction) (Print engine) (Manual adjustment) has been
properly adjusted.
1) Enter SIM 50-10 mode.
2) Select the target paper feed tray (MAIN-XX) with the scroll key.
3) Set A4 (11" x 8.5") paper in the paper feed tray selected in pro-
cedure 2).
4) Press [EXECUTE] key.
The adjustment pattern is printed.
5) Check that the adjustment pattern image is printed in the cor-
rect position.
Measure the dimension of the void area in the front and the
Measure the dimension of the void area in the front and the
rear frame direction of the adjustment pattern, and check that
all the following conditions are satisfied.
RV: REAR VOID AREA
FV: FRONT VOID AREA
FV: FRONT VOID AREA
RV + FV 4.0mm
RV = 2.0 2.0mm
FV = 2.0 2.0mm
RV = 2.0 2.0mm
FV = 2.0 2.0mm
If the above requirement is not met, do the following steps.
6) Change the adjustment value.
Enter the adjustment value and press the [OK] key or the
[EXECUTE] key.
When [EXECUTE] key is pressed, the a djustment pattern is
When [EXECUTE] key is pressed, the a djustment pattern is
printed.
When the adjustment value is incre ased, the adjustment pat-
When the adjustment value is incre ased, the adjustment pat-
tern is shifted to the front frame side. When it is decreased, the
adjustment pattern is shifted to the rear frame side.
When the set value is changed by 1, the shift distance is
When the set value is changed by 1, the shift distance is
changed by about 0.1mm.
Repeat procedures 3) - 6) until the conditions of procedure 5)
Repeat procedures 3) - 6) until the conditions of procedure 5)
are satisfied.
In case a satisfactory result cannot be obtained by repeating
In case a satisfactory result cannot be obtained by repeating
the above procedures, perform the following procedure.
EXECUTE
End of print
EXECUTE
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Display/Item
Content
Setting range
NO
Not select
1
RV
2.0mm
2.0mm
2.0mm
FV
2.0mm
2.0mm
2.0mm
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 76
7) Loosen the paper feed tray of f-center adjustment scr ews (2
pcs.) at the center section of the lift plate of the paper feed tray,
and change the gear unit position in the front/rear frame direc-
tion. Repeat the adjustment procedures from 4).
Normally if the adjustment is executed by ADJ 4 (automatic adjust-
ment), there is no need to execute this adjustment.
Only when the manual adjustment is required, execute this adjust-
Only when the manual adjustment is required, execute this adjust-
ment.
In other words, this manual adjustment is executed when a satis-
In other words, this manual adjustment is executed when a satis-
factory result is not obt ained from the automatic adjustment (ADJ
4).
ADJ 16
Scan image magnification ratio
adjustment
(Manual adjustment)
Normally if the adjustment is executed by ADJ 4 (automatic adjust-
ment), there is no need to execute this adjustment.
Only when the manual adjustment is required, execute this adjust-
Only when the manual adjustment is required, execute this adjust-
ment.
In other words, this manual adjustment is executed when a satis-
In other words, this manual adjustment is executed when a satis-
factory result is not obt ained from the automatic adjustment (ADJ
4).
16-A
Scan image magnification ratio adjustment
(main scanning direction) (Manual
adjustment) (Document table mode)
If the default adjustment value of the scan image magnification
ration adjustment (main scanning direction) of SIM 48-1, copy
image quality may be degraded. Therefore, this adjustment must
be executed only when there is a special necessity.
This adjustment must be performed in the following cases:
* When the copy magnification ratio in the copy image main scan-
* When the copy magnification ratio in the copy image main scan-
ning direction is not properly adjusted.
* When the scanner motor is replaced.
* U2 trouble has occurred.
* When the scanner control PWB is replaced.
* When the EEPROM of the scanner control PWB is replaced.
Before this adjustment, the focus adjustment ( CCD unit installing
* U2 trouble has occurred.
* When the scanner control PWB is replaced.
* When the EEPROM of the scanner control PWB is replaced.
Before this adjustment, the focus adjustment ( CCD unit installing
position adjustment) must have been completed.
1) Place a sca le on the document t able as shown in the figure
1) Place a sca le on the document t able as shown in the figure
below.
2) Enter the SIM 48-1 mode.
3) Make a normal copy and obtain the copy magnification ratio.
Press [CLOSE] key to shif t from th e simulation mode to the
copy mode, and make a copy.
4) Check that the copy magnificati on ratio is within the specified
range (100 1.0%).
If the copy magnification ratio is within the specified range (100
If the copy magnification ratio is within the specified range (100
1.0%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, per form the following
procedure.
5) Change the CCD (MAIN) adjustment value of Simulation 48-1.
When the adjustment value is increased, the copy magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the copy magnifi-
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.02%.
Repeat the procedures 3) - 5) until the copy magnification ratio
Repeat the procedures 3) - 5) until the copy magnification ratio
is within the specified range (100 1.0%).
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MX-3640N ADJUSTMENTS AND SETTINGS 5 – 77
16-B
Scan image magnification ratio adjustment
(sub scanning direction) (Manual
adjustment) (Document table mode)
This adjustment must be performed in the following cases:
* When the copy magnification ratio in the co py image sub scan-
* When the copy magnification ratio in the co py image sub scan-
ning direction is not properly adjusted.
* When the scanner motor is replaced.
* U2 trouble has occurred.
* When the scanner control PWB is replaced.
* When the EEPROM of the scanner control PWB is replaced.
1) Place a scale on the document table as sh own in the figure
* U2 trouble has occurred.
* When the scanner control PWB is replaced.
* When the EEPROM of the scanner control PWB is replaced.
1) Place a scale on the document table as sh own in the figure
below.
2) Enter the SIM 48-1 mode.
3) Make a normal copy and obtain the copy magnification ratio.
Go to the copy mode, and make a copy.
4) Check that the copy magnificati on ratio is within the specified
range (100 1.0%).
If the copy magnification ratio is within the specified range (100
If the copy magnification ratio is within the specified range (100
1.0%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, per form the following
procedure.
5) Change the CCD (SUB) adjustment value of Simulation 48-1.
When the adjustment value is increased, the copy magnifica-
tion ratio in the sub scanning direction is increased.
When the adjustment value is changed by 1, the copy magnifi-
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.1%.
Repeat the procedures 3) - 5) until the copy magnification r atio is
within the specified range (100 1.0%).
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2.
10
20
90
100
110
10
20
90
100
110
10
20
90
100
110
(Example 1)
Copy A
(Shorter than
the original)
Copy A
(Shorter than
the original)
(Example 2)
Copy B
(Longer than
the original)
Copy B
(Longer than
the original)
Scale
(Original)
(Original)
Copy magnifi-
cation ratio
cation ratio
(Original dimension - Copy dimension)
Original dimension
100%
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