MX-DEX1 (serv.man10). Section 8 - Adjustments . — Sharp Copying Equipment Service Manual (repair manual)

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MX-DEX1 (serv.man10)
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Service Manual
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Device
Copying Equipment / Section 8 - Adjustments .
File
mx-dex1-sm10.pdf
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MX-DEX1/DEX2  ADJUSTMENT  8 – 1
Service Manual      
 
[8] ADJUSTMENT
Each adjustment item in the adjustment item list is indicated with its
JOB number.  The adjustment procedures should be performed in
the ascending order of Job numbers.
However, you do not have to always perform all the adjustment
items.  Perform only the necessary adjustments according to the
actual conditions. 
Skip any unnecessary adjustment items, and perform the next nec-
essary item.  Even with some items skipped, the adjustment proce-
dures should be performed in the ascending order of Job numbers.
Failure to perform the adjustment items in the correct order may
result in adjustment errors or some other problems. 
To start a simulation: 
1)
Press the [COPY MODE] key to turn on Copy mode. 
2)
Press the following keys exactly in this sequence: 
[P] (Program), [*] (asterisk),  [C] (Clear), [*]. 
3)
This displays the Simulation Main Number Entry screen (which
means that the system is waiting for user input).
 
1. Adjustment Item List
2. Detailed Procedures 
 
1
Print off-center adjustment
1)
Run SIM50-10 using the keypad on the main unit.  
The following screen appears: 
2)
This screen allows you to configure the print off-center adjust-
ment value for each paper feed tray.
<Detailed Description>
3)
On the touch panel, press [
↓] to select "E: 50 : CS3" or "F:
50 : CS4." 
4)
Enter the desired adjustment value through the numeric key-
pad. 
(This value, which defaults to 50, can be adjusted within the
range of 1 to 99).
• Reducing the adjustment value by 1 causes the main scan/
print position to shift by 0.1 mm toward the rear. 
• Increasing the adjustment value by 1 causes the main scan/
print position to shift by 0.1 mm toward the front. 
5)
After entering the adjustment value, press the [EXECUTE] key
on the touch panel to start printing and save the setting.
6)
Check that the adjustment pattern image is printed in the cor-
rect position.
Measure the dimensions of the void areas on the front- and
rear-frame sides of the adjustment pattern image, and make
sure that the following conditions are met: 
No adjustment is needed if A - B = 0 
±3.0 mm.
If the above condition is not met, do the following:
7)
Change the adjustment value. 
(Enter a new adjustment value and press the [OK] key).
Changing the adjustment value by 1 shifts the position by
approximately 0.1 mm. 
Repeat steps 4) to 6) until the condition shown in step 6) is sat-
isfied.
8)
After you have completed the adjustment, exit from Simulation
mode by pressing the [CA] key.
 
2
Resist amount adjustment
1)
Run SIM51-2 using the keypad on the main unit. 
The following screen appears. 
This screen allows you to configure the resist amount adjust-
ment value for each paper feed tray. 
<Valid Range and Default Value of Each Setting>
2)
On the touch panel, press the [
↓] to select "O: 50 : DESK (S)"
or "P: 50 : DESK (L)." 
3)
Enter the desired adjustment value through the numeric key-
pad. 
(This value, which defaults to 50, can be adjusted within the
range of 1 to 99).
Increasing the adjustment value by 1 causes the resist amount
to increase by 1 msec. 
4)
After entering the adjustment value, press the [OK] key on the
touch panel  to save the setting. 
5)
After you have completed the adjustment, exit from Simulation
mode by pressing the [CA] key.
Job number
Adjustment Item List
Simulation
1
Print off-center adjustment
50-10
2
Resist amount adjustment
51-2
3
Print leading edge adjustment
50-5
Item
Display
Description
Setting 
range
Default
E
 CS3
Print off-center adjustment value 
(tray 3)
1 to 99
50
F
 CS4
Print off-center adjustment value 
(tray 4)
1 to 99
50
0
A:
A : 100
B : 50
BK-MAG
MTF
SIMULATION NO.50-10
PAPER CENTER OFFSET SETUP
100
[64 - 140]
OK
TEST
EXECUTE
CLOSE
C : 50
CS1
D : 50
CS
;
;
;
;
2
Item
Display
Description
Transport
 direction
Setting
range
Default
O
DESK (S)
Desk - deflection 
adjustment value
(Normal paper, 
small size)
LT size or 
smaller
1 to 99
50
P
DESK (L)
Desk - deflection 
adjustment value
(Normal paper, 
large size)
Larger 
size than 
above
1 to 99
50
A-B = 0 3.0mm
+-
B
A
0
A:
SIMULATION NO.51-02
REGIST ROLLER ADJUSTMENT
50
[ 1-99 ]
OK
TEST
CLOSE
SIDE1
SIDE2
ENGIN
A:50
B:50
C:50
D:50
; NORMAL_PLAIN_HIGH
; NORMAL_PLAIN_LOW
; NORMAL_THIN_HIGH
; NORMAL_THIN_LOW
MX-DEX1/DEX2  ADJUSTMENT  8 – 2
 
3
Print leading edge adjustment
1)
Run SIM50-5 using the keypad on the main unit. 
The following screen appears. 
2)
Press the [EXECUTE] button to highlight it. 
The main unit starts printing an adjustment pattern image
using the currently configured values.  
Upon completion, the [EXECUTE] button becomes unhigh-
lighted. 
* To save the currently configured settings into the EEPROM
and RAM, press any of the following: [
↑] or [↓] button, [OK]
button, [EXECUTE] button, [Color] or [Monochrome] key.
* At any time during printing, you can suspend the test print by
pressing any of the following: the [C] key, [CA] key, [SYS-
TEM SETTING] key, and [EXECUTE] button. 
* After being stopped from printing, the main unit resumes the
self-print test when it becomes ready. 
3)
Select "E: PAPER" and choose the desired paper feed location
(in this example, CS3 and CS4). 
4)
Check that the adjustment pattern image is printed in the cor-
rect position. Measure the dimensions of the void areas on the
left- and right-frame sides of the adjustment pattern image,
and make sure that the following conditions are met: A=4.0
±2.0 mm B=4.0 ±2.0 mm. If this conditions are met, no adjust-
ment is needed. 
If the above conditions are not satisfied, proceed to steps 5)
and 6).
5)
Change the adjustment values for adjustment items A (DEN-
C) and B (DEN-B). 
* Reducing the adjustment value for item A (DEN-C) by 1
causes the print start point relative to the paper transport
direction to shift toward the paper leading edge by 0.1 mm. 
* Reducing the adjustment value for item B (DEN-B) by 1
causes the sub-scan-directional print range, relative to the
paper transport direction, to decrease by 0.1 mm. 
6)
Repeat steps 2) to 5) until the conditions shown in step 4) are
satisfied. 
<Description of Items>
0
A:
A:30
B:20
SIMULATION NO.50-05
LEAD EDGE ADJUSTMENT VALUE(PRINTER)
30
1-99
OK
TEST
EXECUTE
CLOSE
C:20
D:1
DEN-C
DEN-B
FRONT/REAR
MULTI COUNT
A = 4.0 2.0mm
+-
B = 4.0 2.0mm
+-
B
A
Item
Display
Description
Setting range
Default
Remarks
A
DEN-C
Print leading edge 
adjustment
1 to 99
30
This adjustment value is intended to adjust the print leading edge for the printer.  
Reducing the adjustment value for item A (DEN-C) by 1 causes the print start point 
relative to the paper transport direction to shift toward the leading edge by 0.1 mm. 
B
DEN-B
Sub-scan-directional 
print range adjustment
1 to 99
30
This adjust value controls how much void will be created at the trailing edge of the 
paper.  Reducing the adjustment value for item B (DEN-B) by 1 causes the sub-scan-
directional print range, relative to the paper transport direction, to decrease by 0.1 
mm. 
Page of 2

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