Sharp MX-M623U / MX-M753U (serv.man10) Service Manual ▷ View online
MX-M753N ADJUSTMENTS AND SETTINGS 5 – 40
ADJ 14
Paper size detection
adjustment
adjustment
14-A
Manual paper feed tray paper width sensor
adjustment
adjustment
This adjustment is needed in the following situations:
* The manual paper feed tray section has been disassembled.
* The manual paper feed tray unit has been replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1)
* The manual paper feed tray section has been disassembled.
* The manual paper feed tray unit has been replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1)
Enter the SIM 40-2 mode.
2)
Open the manual paper feed guide to the maximum width posi-
tion.
tion.
3)
Press [EXECUTE] key.
[EXECUTE] key is highlighted. Then it returns to the normal
display.
The maximum width position detection level of the manual
paper feed guide is recognized.
[EXECUTE] key is highlighted. Then it returns to the normal
display.
The maximum width position detection level of the manual
paper feed guide is recognized.
4)
Set the manual paper feed guide to the A4R size.
5)
Press [EXECUTE] key.
[EXECUTE] key is highlighted. Then it returns to the normal
display.
The A4R size width position detection level of the manual
paper feed guide is recognized.
[EXECUTE] key is highlighted. Then it returns to the normal
display.
The A4R size width position detection level of the manual
paper feed guide is recognized.
6)
Set the manual paper feed guide to the width for the A5R size.
7)
Press [EXECUTE] key.
[EXECUTE] key is highlighted. Then it returns to the normal
display.
Set the manual paper feed guide to the width for the A5R size.
[EXECUTE] key is highlighted. Then it returns to the normal
display.
Set the manual paper feed guide to the width for the A5R size.
8)
Open the manual paper feed guide to the minimum width posi-
tion.
tion.
9)
Press [EXECUTE] key.
[EXECUTE] key is highlighted. Then it returns to the normal
display.
The minimum width position detection level of the manual
paper feed guide is recognized.
If the above operation is not completed normally, "ERROR" is
displayed.
When the operation is completed normally, the above data are
saved to the memory and "COMPLETE" is displayed.
[EXECUTE] key is highlighted. Then it returns to the normal
display.
The minimum width position detection level of the manual
paper feed guide is recognized.
If the above operation is not completed normally, "ERROR" is
displayed.
When the operation is completed normally, the above data are
saved to the memory and "COMPLETE" is displayed.
EXECUTE
EXECUTE
Repeat the above procedure to adjust
the A5R width MIN POSITION.
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5
11
1
2
A5
A4
B4 B5
A3
A4
B5
7
1
2
8
1
2
MX-M753N ADJUSTMENTS AND SETTINGS 5 – 41
14-B
DSPF tray paper size (width) sensor
adjustment
adjustment
This adjustment must be performed in the following cases:
* The DSPF paper feed tray section has been disassembled.
* The DSPF paper feed tray unit has been replaced.
* When a U2 trouble occurs.
* The DSPF control PWB has been replaced.
* The EEPROM on the DSPF control PWB has been replaced.
1)
* The DSPF paper feed tray section has been disassembled.
* The DSPF paper feed tray unit has been replaced.
* When a U2 trouble occurs.
* The DSPF control PWB has been replaced.
* The EEPROM on the DSPF control PWB has been replaced.
1)
Enter the SIM 53-6 mode.
2)
Open the DSPF paper feed guide to the maximum width posi-
tion.
tion.
3)
Press [EXECUTE] key.
The maximum width detection level is recognized.
The maximum width detection level is recognized.
4)
Open the DSPF paper feed guide to the width for the A4R size.
5)
Press [EXECUTE] key.
The A4R width detection level is recognized.
The A4R width detection level is recognized.
6)
Open the DSPF paper feed guide to the width for the A5R size.
7)
Press [EXECUTE] key.
The A5R width detection level is recognized.
The A5R width detection level is recognized.
8)
Open the DSPF paper feed guide to the minimum width posi-
tion.
tion.
9)
Press [EXECUTE] key.
The minimum width detection level is recognized.
The minimum width detection level is recognized.
* When each of the above operations has been completed, the
"COMPLETE" message appears; when any of the operations
has failed, the "ERROR" message appears.
has failed, the "ERROR" message appears.
14-C
Adjust the paper width sensor for paper
feed tray 3
feed tray 3
This adjustment is needed in the following situations:
* The paper feed tray section has been disassembled.
* The paper feed tray unit has been replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1)
* The paper feed tray section has been disassembled.
* The paper feed tray unit has been replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1)
Enter the SIM 40-12 mode.
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EXECUTE
EXECUTE
MX-M753N ADJUSTMENTS AND SETTINGS 5 – 42
2)
Open the paper feed guide to the maximum width position.
3)
Press [EXECUTE] key.
The maximum width detection level is recognized.
The maximum width detection level is recognized.
4)
Open the paper feed guide to the minimum width position.
5)
Press [EXECUTE] key.
The minimum width detection level is recognized.
The minimum width detection level is recognized.
* When each of the above operations has been completed, the
"COMPLETE" message appears; when any of the operations
has failed, the "ERROR" message appears.
has failed, the "ERROR" message appears.
ADJ 15
Adjusting the original size
detection (in original table
mode)
detection (in original table
mode)
15-A
Adjust the detection point of the original
size sensor (in original table mode)
size sensor (in original table mode)
This adjustment is needed in the following situations:
* The original size sensor section has been disassembled.
* The original size sensor section has been replaced.
* U2 trouble has occurred.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
* The original size sensor section has been disassembled.
* The original size sensor section has been replaced.
* U2 trouble has occurred.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
1)
Go through the modes specified in Simulation 41-1.
2)
Gradually turn over the original detection arm unit in the arrow
direction, and loosen the original cover switch actuator adjust-
ing screw so that the OCSW indicator changes from inverse
video to normal video when the arm unit top reaches a height
of 32
direction, and loosen the original cover switch actuator adjust-
ing screw so that the OCSW indicator changes from inverse
video to normal video when the arm unit top reaches a height
of 32
0.5mm from the table glass. Then move the actuator to
adjust its position. (If the original cover switch turns on in
improper timing, the original detection mechanism mail fail to
operate correctly.)
improper timing, the original detection mechanism mail fail to
operate correctly.)
15-B
Adjust the sensitivity of the original size
sensor
sensor
This adjustment is needed in the following situations:
* The original size sensor section has been disassembled.
* The original size sensor section has been replaced.
* U2 trouble has occurred.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
* The original size sensor section has been disassembled.
* The original size sensor section has been replaced.
* U2 trouble has occurred.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
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3'
3'
3'
3'
3'
32 0.5mm
+
-
MX-M753N ADJUSTMENTS AND SETTINGS 5 – 43
1)
Enter the SIM 41-2 mode.
2)
Execute the sensor adjustment without document.
With the document cover open, without placing a document on
the table glass, press [EXECUTE] key.
With the document cover open, without placing a document on
the table glass, press [EXECUTE] key.
3)
Place A3 (11" x 17") paper on the document table and press
[EXECUTE] key.
If the adjustment is completed normally, "DOCUMENT PHOTO
SENSOR LEVEL IS ADJUSTED" is displayed.
[EXECUTE] key.
If the adjustment is completed normally, "DOCUMENT PHOTO
SENSOR LEVEL IS ADJUSTED" is displayed.
ADJ 16
Touch panel coordinate setting
This adjustment is needed in the following situations:
* The operation panel has been replaced.
* U2 trouble has occurred.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
* The operation panel has been replaced.
* U2 trouble has occurred.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
1)
Enter the SIM 65-1 mode.
2)
Precisely press the cross mark points (4 positions).
When the cross mark is pressed precisely, a buzzer sounds
and the display is reversed. When all the four points are
pressed and the touch panel adjustment is completed, the dis-
play returns to the simulation sub number entry screen.
In case of an error, the display returns to the entry screen
again.
Check to confirm that there is no shift between the display
frame and the detection position when the touch panel is
pressed.
* When pressing the touch panel, never use a sharp tip (such
When the cross mark is pressed precisely, a buzzer sounds
and the display is reversed. When all the four points are
pressed and the touch panel adjustment is completed, the dis-
play returns to the simulation sub number entry screen.
In case of an error, the display returns to the entry screen
again.
Check to confirm that there is no shift between the display
frame and the detection position when the touch panel is
pressed.
* When pressing the touch panel, never use a sharp tip (such
as a needle or a pin).
ADJ 17
Fusing paper guide position
adjustment
adjustment
Normally there is no need to perform this adjustment. In the follow-
ing cases, perform this adjustment.
* When a paper jam occurs in the fusing section.
* When wrinkles are made on paper in the fusing section.
* When an image deflection or an image blur is generated in the
ing cases, perform this adjustment.
* When a paper jam occurs in the fusing section.
* When wrinkles are made on paper in the fusing section.
* When an image deflection or an image blur is generated in the
paper rear edge section.
1)
Loosen the fusing paper guide fixing screws which are on two
position in the front/rear frame direction.
position in the front/rear frame direction.
2)
Use the fusing paper guide position scale as the reference to
shift the paper guide in the arrow direction A or B.
shift the paper guide in the arrow direction A or B.
Though the standard installing position is one scale under the
center position of the marking, change the position depending
on the situation.
* When wrinkles are generated on paper, change the position
center position of the marking, change the position depending
on the situation.
* When wrinkles are generated on paper, change the position
in the arrow direction B.
* When an image deflection or an image blur is generated in
the paper rear edge section, change the position in the
arrow direction A.
arrow direction A.
Adjustment completed
EXECUTE
Adjustment
failed
failed
EXECUTE
A
B
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