Sharp MX-B381 / MX-B401 (serv.man7) Service Manual ▷ View online
MX-B381/B401 ADJUSTMENTS 4 – 31
a. Adjustment procedure
1)
1)
Enter the SIM 67-34 mode.
2)
Select the item A, B with the scroll key.
* If a tone gap occurs on part of high density, set 0 to item A.
The density of high density part decreases. However, the tone
gap is better.
gap is better.
* In case of more increase of the density on high density part, set 1
to item A.
The tone gap may occur in high density part.
The tone gap may occur in high density part.
(NOTE) If the setting values of item B is changed, density of the
high density part is changed.
When these values are changed, be sure to perform the printer
density and gradation adjustment. (Automatic adjustment)
high density part is changed.
When these values are changed, be sure to perform the printer
density and gradation adjustment. (Automatic adjustment)
13-E
Auto density and gradation adjustment by
the user (Printer auto adjustment ENABLE
setting and adjustment)
the user (Printer auto adjustment ENABLE
setting and adjustment)
a. General
In the user program mode, the user can execute the auto calibra-
tion (auto adjustment of the copy density and gradation).
This adjustment is to set Enable/Disable of the above user opera-
tion with SIM 26-54.
In the user program mode, the user can execute the auto calibra-
tion (auto adjustment of the copy density and gradation).
This adjustment is to set Enable/Disable of the above user opera-
tion with SIM 26-54.
CAUTION: This setting must be set to ENABLE only when the
user's understanding on the automatic adjustment of
the printer density and gradation and the user's opera-
tional ability are judged enough to execute the adjust-
ment.
When set to ENABLE, give enough explanations on the
operating procedures, notes, and operations to the
user.
the printer density and gradation and the user's opera-
tional ability are judged enough to execute the adjust-
ment.
When set to ENABLE, give enough explanations on the
operating procedures, notes, and operations to the
user.
This adjustment is required in the following cases.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
b. Setting procedure
1)
1)
Enter the SIM 26-54 mode.
2)
Select ENABLE or DISABLE with 10-key.
When disabling, set to "0" (NO). When enabling, set to "1"
(Yes).
When disabling, set to "0" (NO). When enabling, set to "1"
(Yes).
3)
Press [OK] key.
When set to DISABLE, the menu of the user auto density and gra-
dation (automatic adjustment of printer density) is not displayed in
the user program mode.
dation (automatic adjustment of printer density) is not displayed in
the user program mode.
(Auto calibration by the user (Auto adjustment))
1)
1)
Enter the system setting mode.
2)
Enter the printer setting mode.
3)
Press the auto calibration key.
4)
Press [EXECUTE] key.
The patch image (adjustment pattern) is printed out.
The patch image (adjustment pattern) is printed out.
5)
Set the patch image (adjustment pattern) printed in procedure
4) on the document table.
Set the patch image to the center reference position so that the
light density area is on the left side in the center reference.
At that time, place 5 sheets of white paper on the above patch
image (adjustment pattern).
4) on the document table.
Set the patch image to the center reference position so that the
light density area is on the left side in the center reference.
At that time, place 5 sheets of white paper on the above patch
image (adjustment pattern).
6)
Press [EXECUTE] key, and the copy density and gradation
adjustment is executed automatically. After completion of the
adjustment, the display returns to the original operation
screen.
adjustment is executed automatically. After completion of the
adjustment, the display returns to the original operation
screen.
13-F
Copy/Printer density and gradation
adjustment (Automatic adjustment)
adjustment (Automatic adjustment)
This adjustment is needed in the following situations:
* When a consumable part (developer, OPC drum, transfer belt) is
* When a consumable part (developer, OPC drum, transfer belt) is
replaced.
* When the carriage unit is replaced.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
a. General
SIM46-74 is used to perform the automatic copy density and grada-
tion adjustment (SIM46-24) and the automatic printer density and
gradation adjustment (SIM67-24) continuously.
Since it is desirable to perform the copy adjustment (automatic
adjustment) before the automatic printer density and gradation
adjustment, it is advisable to perform the adjustment in this mode.
This mode is also advisable to effectively perform both of the auto-
matic copy density and gradation adjustment (SIM46-24) and the
automatic printer density and gradation adjustment (SIM67-24). It
saves considerable time when compared with performing each of
the auto copy/printer density and gradation adjustment individually.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
a. General
SIM46-74 is used to perform the automatic copy density and grada-
tion adjustment (SIM46-24) and the automatic printer density and
gradation adjustment (SIM67-24) continuously.
Since it is desirable to perform the copy adjustment (automatic
adjustment) before the automatic printer density and gradation
adjustment, it is advisable to perform the adjustment in this mode.
This mode is also advisable to effectively perform both of the auto-
matic copy density and gradation adjustment (SIM46-24) and the
automatic printer density and gradation adjustment (SIM67-24). It
saves considerable time when compared with performing each of
the auto copy/printer density and gradation adjustment individually.
Display/Item
Content
Setting
range
Default
A
K
(0:ENABLE
1: DISABLE)
0
K engine maximum
density correction
mode Enable
density correction
mode Enable
0 - 1
1
1
K engine maximum
density correction
mode Disable
density correction
mode Disable
B
BLACK MAX
TARGET
Scanner target value for
BLACK maximum density
correction
BLACK maximum density
correction
0 - 999
500
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MX-B381/B401 ADJUSTMENTS 4 – 32
b. Note for execution of the copy/printer density and
gradation adjustment (Automatic adjustment for each
dither)
dither)
1)
When setting the adjustment pattern on the document table in
the automatic adjustment procedures, place 5 sheets of white
paper on the adjustment pattern in order to prevent back copy-
ing and adverse effects of paper wrinkles as far as possible.
the automatic adjustment procedures, place 5 sheets of white
paper on the adjustment pattern in order to prevent back copy-
ing and adverse effects of paper wrinkles as far as possible.
c. Adjustment procedures
(Auto density and gradation adjustment by the serviceman)
(Auto density and gradation adjustment by the serviceman)
PCL printer?
Copy/printer density and gradation adjustment (Automatic adjustment)
(SIM46-74) procedure flowchart
(SIM46-74) procedure flowchart
Start
Execute ADJ13F (Copy density and gradation/Printer density and gradation adjustment
(automatic density)). (SIM46-74)
(automatic density)). (SIM46-74)
Set the adjustment pattern on the document table. Press [EXECUTE] key.
(The adjustment pattern is scanned, and the adjustment is automatically performed to
print the check pattern.)
(The adjustment pattern is scanned, and the adjustment is automatically performed to
print the check pattern.)
Use the test chart (UKOG-0326FCZZ/UKOG-0326FC11) to make a copy in the Text
/Printed Photo mode, and check the copy density and gradation.
/Printed Photo mode, and check the copy density and gradation.
Use SIM46-21 to print the check pattern, and check the density and gradation.
Set the adjustment pattern on the document table. Press [EXECUTE] key.
(The adjustment pattern is scanned, and the adjustment is automatically performed to
print the check pattern.) (*1)
(The adjustment pattern is scanned, and the adjustment is automatically performed to
print the check pattern.) (*1)
NO
YES
NO
(Copy density and gradation adjustment (automatic adjustment)
Enter the SIM46-74 mode, and select A4 (11" x 8.5") paper. (Automatic selection)
Press [OK] key. (The initial setting of the half tone image correction is automatically
performed.) (*1)
performed.) (*1)
Press [EXECUTE] key. (The adjustment pattern is printed.)
Press [EXECUTE] key. (The adjustment pattern is printed.)
Cancel SIM46-74.
Check the printed check pattern for any streaks or unclear copy. (*2)
Check the printed check pattern for any streaks or unclear copy. (*2)
(Printer density and gradation adjustment (Automatic adjustment))
Check the copy density and gradation adjustment result.
Are the density and gradation
at the specified level?
at the specified level?
Check the density and gradation adjustment result with the self print check pattern.
Use SIM67-25 to print the self print
check pattern, and check the density
and gradation.
check pattern, and check the density
and gradation.
Use SIM64-5 to print the self print check
pattern, and check the printer density and
gradation.
pattern, and check the printer density and
gradation.
Are the density
and gradation at
the specified level?
End
Execute ADJ12C (Copy density and
gradation adjustment) (Manual
adjustment). (SIM46-21/44-21) (*1)
gradation adjustment) (Manual
adjustment). (SIM46-21/44-21) (*1)
Execute ADJ13B (Printer density and
gradation adjustment)
(Manual adjustment). (SIM67-25)
gradation adjustment)
(Manual adjustment). (SIM67-25)
*1:
If satisfactory density and gradation
are not obtained with ADJ12C
(Copy density and gradation
adjustment) (Manual adjustment)
(SIM46-21/44-21), check the print
engine for any problems.
If satisfactory density and gradation
are not obtained with ADJ12C
(Copy density and gradation
adjustment) (Manual adjustment)
(SIM46-21/44-21), check the print
engine for any problems.
*2:
If there is any streak or unclear
copy on the printed check pattern,
check the print engine for any
problems.
If there is any streak or unclear
copy on the printed check pattern,
check the print engine for any
problems.
NO
YES
YES
MX-B381/B401 ADJUSTMENTS 4 – 33
1)
Enter the SIM46-74 mode.
2)
Press [EXECUTE] key.
The high density process control is performed, and the copy
patch image (adjustment pattern) is printed out. (A4 or 11" x
8.5" paper is automatically selected.)
The high density process control is performed, and the copy
patch image (adjustment pattern) is printed out. (A4 or 11" x
8.5" paper is automatically selected.)
3)
Set the patch image (adjustment pattern) paper printed in pro-
cedure 2) on the document table.
Set the printed patch image (adjustment pattern) on the docu-
ment table. Place the patch image so that the fine lines are on
the left side in the center reference. At that time, place 5
sheets of white paper on the printed patch image (adjustment
pattern).
cedure 2) on the document table.
Set the printed patch image (adjustment pattern) on the docu-
ment table. Place the patch image so that the fine lines are on
the left side in the center reference. At that time, place 5
sheets of white paper on the printed patch image (adjustment
pattern).
4)
Press [EXECUTE] key.
The copy density and gradation adjustment is automatically
executed and prints the check patch image.
If there is any streak or unclear print on the printed check pat-
tern, check the print engine for any problems.
executed and prints the check patch image.
If there is any streak or unclear print on the printed check pat-
tern, check the print engine for any problems.
5)
Press [EXECUTE] key.
The printer patch image (adjustment pattern) is printed out.
(A4 or 11" x 8.5" paper is automatically selected.)
The printer patch image (adjustment pattern) is printed out.
(A4 or 11" x 8.5" paper is automatically selected.)
6)
Set the patch image (adjustment pattern) paper printed in pro-
cedure 5) on the document table.
Set the printed patch image (adjustment pattern) on the docu-
ment table. Place the patch image so that the fine lines are on
the left side in the center reference. At that time, place 5
sheets of white paper on the printed patch image (adjustment
pattern).
cedure 5) on the document table.
Set the printed patch image (adjustment pattern) on the docu-
ment table. Place the patch image so that the fine lines are on
the left side in the center reference. At that time, place 5
sheets of white paper on the printed patch image (adjustment
pattern).
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Q (Max)
A
B
C D
E
F
G H
I
J
K
L
M N O P
High density
Low density
Patch A must not be copied.
The max density patch is not blurred
Patch C or D slightly copied.
The patch density is identical between patches or not reversed.
The patch density is changed gradually.
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PRINTER CALIBRATION
MX-B381/B401 ADJUSTMENTS 4 – 34
7)
Press [EXECUTE] key.
The adjustment (step 1) is automatically performed and the
check patch image is printed out.
If there is any streak or unclear print on the printed check pat-
tern, check the print engine for any problems.
check patch image is printed out.
If there is any streak or unclear print on the printed check pat-
tern, check the print engine for any problems.
8)
The initial setting menu of the half tone image correction is dis-
played. Press [OK] key.
The initial setting of the half tone image correction is per-
formed.
played. Press [OK] key.
The initial setting of the half tone image correction is per-
formed.
9)
When "COMPLETE THIS PROCEDURE" is displayed, the
adjustment operation is completed. Cancel SIM46-74.
adjustment operation is completed. Cancel SIM46-74.
NOTE: The adjustment result becomes valid only when the both
adjustments in the copy mode and in the printer mode are
completed.
If, for example, only the copy density and gradation adjust-
ment (auto adjustment) is performed and the simulation is
canceled, the adjustment result is invalid.
completed.
If, for example, only the copy density and gradation adjust-
ment (auto adjustment) is performed and the simulation is
canceled, the adjustment result is invalid.
10) Check the copy and printer density and gradation.
If a satisfactory result on the print density and gradation is not
obtained with the automatic adjustment, execute the manual
adjustment (SIM 67-25) (ADJ 13B).
obtained with the automatic adjustment, execute the manual
adjustment (SIM 67-25) (ADJ 13B).
ADJ 14
Manual paper feed tray paper
size (width) sensor adjustment
size (width) sensor 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)
Go through the modes specified in Simulation 40-2.
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PRINTER CALIBRATION
PRINTER CALIBRATION
Q (Max)
A
B
C D
E
F
G H
I
J
K
L
M N O P
High density
Low density
Patch A or B slightly printed
The max density patch is not blurred
The patch density is identical between patches or not reversed.
The patch density is changed gradually.
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EXECUTE
EXECUTE
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Repeat the above procedure to adjust
the A5R width MIN POSITION.
the A5R width MIN POSITION.
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