Sharp MX-B381 / MX-B401 (serv.man7) Service Manual ▷ View online
MX-B381/B401 ADJUSTMENTS 4 – 19
2)
Press [EXECUTE] key. (A4 or 11" x 8.5" paper is automatically
selected.)
The patch image (adjustment pattern) is printed out.
selected.)
The patch image (adjustment pattern) is printed out.
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 adjustment is automatically executed to print the
check patch image. Wait until the operation panel shown in
procedure 5) is displayed.
check patch image. Wait until the operation panel shown in
procedure 5) is displayed.
5)
Press [OK] key on the operation panel.
According to data of this adjustment, the initial setting of the
half tone image correction is performed.
According to data of this adjustment, the initial setting of the
half tone image correction is performed.
Remark:
After pressing [OK] key on the operation panel, the initial set-
ting of the half tone image correction is started. During the
operation, "NOW REGISTERING THE NEW TARGET OF
HALFTONE PROCON." is displayed. This operation takes
several minutes.
After completion of the operation, "PLEASE QUIT THIS
MODE" is displayed.
After pressing [OK] key on the operation panel, the initial set-
ting of the half tone image correction is started. During the
operation, "NOW REGISTERING THE NEW TARGET OF
HALFTONE PROCON." is displayed. This operation takes
several minutes.
After completion of the operation, "PLEASE QUIT THIS
MODE" is displayed.
Do not cancel the simulation until "PLEASE QUIT THIS
MODE" is displayed.
MODE" is displayed.
6)
Check the density and gradation.
There are following three methods in the density and gradation
check.
(Method 1)
Check to insure that the printed check patch image is within
the following specifications.
There are following three methods in the density and gradation
check.
(Method 1)
Check to insure that the printed check patch image is within
the following specifications.
The print density must be changed gradually from the lighter
level to the darker level. The density changing direction must
not be reversed.
Patch C or D slightly copied.
Patch A must not be copied.
(Method 2)
Use the gray test chart (UKOG-0162FCZZ) or the service color
test chart (UKOG-0326FCZZ/UKOG-0326FC11) in the Text/
Photo mode (manual) to check the copy density and gradation.
(Refer to the items of the copy density and gradation check.)
If a satisfactory result is not obtained by the automatic copy
density and gradation adjustment, use ADJ12C Manual adjust-
ment (SIM46-21) to adjust.
level to the darker level. The density changing direction must
not be reversed.
Patch C or D slightly copied.
Patch A must not be copied.
(Method 2)
Use the gray test chart (UKOG-0162FCZZ) or the service color
test chart (UKOG-0326FCZZ/UKOG-0326FC11) in the Text/
Photo mode (manual) to check the copy density and gradation.
(Refer to the items of the copy density and gradation check.)
If a satisfactory result is not obtained by the automatic copy
density and gradation adjustment, use ADJ12C Manual adjust-
ment (SIM46-21) to adjust.
12-C
Copy density and gradation adjustment
(Manual adjustment)
(Manual 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.
* The carriage unit has been replaced.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) section 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.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) section 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.
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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.
MX-B381/B401 ADJUSTMENTS 4 – 20
a. General
The copy density and gradation adjustment (manual adjustment) is
executed when the above automatic adjustment cannot obtain the
specified range, when a fine adjustment is required, or when a
request for customization is made by the user.
b. Note for the copy density and gradation adjustment
The copy density and gradation adjustment (manual adjustment) is
executed when the above automatic adjustment cannot obtain the
specified range, when a fine adjustment is required, or when a
request for customization is made by the user.
b. Note for the copy density and gradation adjustment
(Manual adjustment)
1)
The print engine section must have been properly adjusted.
2)
The CCD gamma must have been properly adjusted.
c. Adjustment procedure
1)
Enter the SIM46-21 mode.
2)
Press [EXECUTE] key. (A4 or 11" x 8.5" paper is automatically
selected.)
The adjustment pattern is printed.
selected.)
The adjustment pattern is printed.
3)
Check that the following specification is satisfied or the density
and gradation is satisfactory.
If not, execute the following procedures.
and gradation is satisfactory.
If not, execute the following procedures.
The print density must be changed gradually from the lighter
level to the darker level. The density changing direction must
not be reversed.
Patch C or D slightly copied.
Patch A must not be copied.
If the above conditions are not satisfied, execute the following
procedures.
level to the darker level. The density changing direction must
not be reversed.
Patch C or D slightly copied.
Patch A must not be copied.
If the above conditions are not satisfied, execute the following
procedures.
4)
Select the adjustment point to be adjusted with the scroll key.
5)
Enter the adjustment value with 10-key and press [OK] key.
The adjustment value is set in the range of 245 - 755 (1 - 999).
When SIM 46-24 is used to adjust the automatic density and
gradation, all the set values of this simulation are set to 500.
To increase the density, increase the adjustment value. To
decrease the density, decrease the adjustment value.
Repeat procedures of 2) - 5) until the condition of 3) is satis-
fied.
When the overall density is low, or when the density is high
and patch A is copied, use the arrow key to adjust all the
adjustment values of A - Q (MAX) to a same level collectively.
Then, adjust each patch density and gradation individually.
This is an efficient way of adjustment.
The adjustment value is set in the range of 245 - 755 (1 - 999).
When SIM 46-24 is used to adjust the automatic density and
gradation, all the set values of this simulation are set to 500.
To increase the density, increase the adjustment value. To
decrease the density, decrease the adjustment value.
Repeat procedures of 2) - 5) until the condition of 3) is satis-
fied.
When the overall density is low, or when the density is high
and patch A is copied, use the arrow key to adjust all the
adjustment values of A - Q (MAX) to a same level collectively.
Then, adjust each patch density and gradation individually.
This is an efficient way of adjustment.
6)
Check the density and gradation of the adjustment check pat-
tern.
tern.
YES
NO
YES
NO
Manual copy density and gradation adjustment procedure flowchart
(SIM46-21)
(SIM46-21)
Start
Execute ADJ12C (Manual copy density and gradation adjustment).
(*1)
(*1)
Enter the SIM46-21 mode, and select A4R (11" x 8.5"R)
paper.
paper.
Press [EXECUTE] key.
(The adjustment check pattern is printed.)
(The adjustment check pattern is printed.)
Check the density and gradation of the adjustment
check pattern.
check pattern.
Select a target adjustment level with the scroll key.
Enter the adjustment value with 10-key.
Press [EXECUTE] key.
(The adjustment check pattern is printed.)
(The adjustment check pattern is printed.)
Check the density and gradation of the adjustment
check pattern.
check pattern.
Are the density
at the satisfactory
level?
at the satisfactory
level?
Are the density
at the satisfactory
level?
at the satisfactory
level?
Cancel the SIM46-21 mode.
Perform the initial setting of the half tone image
correction. (SIM44-21)
correction. (SIM44-21)
Check the copy density and gradation adjustment result with the test
chart. (*1)
chart. (*1)
Use the test chart (UKOG-0162FCZZ) or
(UKOG-0326FCZZ/UKOG-0326FC11) to make a copy in the
Text/Printed Photo mode, and check the density.
(UKOG-0326FCZZ/UKOG-0326FC11) to make a copy in the
Text/Printed Photo mode, and check the density.
End
*1:
If satisfactory density is not obtained with the adjustment,
check the print engine for any problems.
If satisfactory density is not obtained with the adjustment,
check the print engine for any problems.
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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.
MX-B381/B401 ADJUSTMENTS 4 – 21
7)
Execute SIM 44-21. (Execute the initial setting of the half tone
image correction.)
image correction.)
It takes several minutes to complete the operation. After com-
pletion of the operation, "COMPLETE" is displayed.
After completion of the operation, the simulation is canceled.
This procedure is to save the copy density and gradation
adjustment data as the reference data for the half tone correc-
tion.
Immediately after execution of ADJ 12C (Copy density and
gradation adjustment (Manual)) with SIM 46-21, be sure to
execute this procedure.
When ADJ 12B (Copy density and gradation adjustment
(Auto)) is executed with SIM 46-24, this procedure is automati-
cally executed.
When [EXECUTE] key is pressed, it is highlighted and the
operation is started.
pletion of the operation, "COMPLETE" is displayed.
After completion of the operation, the simulation is canceled.
This procedure is to save the copy density and gradation
adjustment data as the reference data for the half tone correc-
tion.
Immediately after execution of ADJ 12C (Copy density and
gradation adjustment (Manual)) with SIM 46-21, be sure to
execute this procedure.
When ADJ 12B (Copy density and gradation adjustment
(Auto)) is executed with SIM 46-24, this procedure is automati-
cally executed.
When [EXECUTE] key is pressed, it is highlighted and the
operation is started.
8)
Copy the gray test chart (UKOG-0162FCZZ) or the service
color test chart (UKOG-0326FCZZ/UKOG-0326FC11), or a
user document if necessary, in the Text/Printed Photo mode
(manual) to check the adjustment result again. (Refer to the
item of the copy density and gradation check.)
If the copy density and gradation are not adjusted to the speci-
fied level, there may be another cause.
Troubleshoot the cause, and repair or perform proper treat-
ments, and try all the procedures of the print image adjustment
from the beginning.
color test chart (UKOG-0326FCZZ/UKOG-0326FC11), or a
user document if necessary, in the Text/Printed Photo mode
(manual) to check the adjustment result again. (Refer to the
item of the copy density and gradation check.)
If the copy density and gradation are not adjusted to the speci-
fied level, there may be another cause.
Troubleshoot the cause, and repair or perform proper treat-
ments, and try all the procedures of the print image adjustment
from the beginning.
12-D
Copy density and gradation adjustment
(Each copy mode) (Whole adjustment)
(Normally unnecessary to adjust)
(Each copy mode) (Whole adjustment)
(Normally unnecessary to adjust)
This adjustment is needed in the following situations:
* When there is necessity to change copy density of the low den-
* When there is necessity to change copy density of the low den-
sity and high density part at each copy mode individually.
* When there is necessity to change the density gradient of the
copy by each the copy mode individually.
* When there is necessity to change all copy density by each the
copy mode individually.
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
The density and gradation is adjusted in each copy mode individu-
ally. Normally individual adjustments are not required. When there
is a request from the user, execute this adjustment.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
The density and gradation is adjusted in each copy mode individu-
ally. Normally individual adjustments are not required. When there
is a request from the user, execute this adjustment.
1)
Enter the SIM 46-2 mode.
2)
Select the copy mode to be adjusted with the scroll key.
3)
Enter the adjustment value with 10-key and press [OK] key.
When adjusting the copy density on the low density part, select
"LOW" mode and change the adjustment value. When adjust-
ing the copy density on the high density part, select "HIGH"
mode and change the adjustment value.
When the adjustment value is increased, the copy density is
increased. When the adjustment value is decreased, the copy
density is decreased.
When adjusting the copy density on the low density part, select
"LOW" mode and change the adjustment value. When adjust-
ing the copy density on the high density part, select "HIGH"
mode and change the adjustment value.
When the adjustment value is increased, the copy density is
increased. When the adjustment value is decreased, the copy
density is decreased.
4)
Make a copy and check the adjustment result.
Switch the simulation mode and the normal copy mode alter-
nately, and adjust and check the adjustment result.
Repeat switching the adjustment mode (SIM 46-2) and the
normal copy mode and changing the adjustment value and
checking the adjustment result until a satisfactory result is
obtained.
To increase the density, increase the adjustment value. To
decrease the density, decrease the adjustment value.
Switch the simulation mode and the normal copy mode alter-
nately, and adjust and check the adjustment result.
Repeat switching the adjustment mode (SIM 46-2) and the
normal copy mode and changing the adjustment value and
checking the adjustment result until a satisfactory result is
obtained.
To increase the density, increase the adjustment value. To
decrease the density, decrease the adjustment value.
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Display/Item
Content
Setting
range
Default
A
AUTO1
Auto 1
LOW
1 - 99
50
HIGH
1 - 99
50
B
AUTO2
Auto 2
LOW
1 - 99
50
HIGH
1 - 99
50
C
TEXT
Text
LOW
1 - 99
50
HIGH
1 - 99
50
D
TEXT/PRINTED
PHOTO
PHOTO
Text/Printed
Photo
Photo
LOW
1 - 99
50
HIGH
1 - 99
50
E
TEXT/PHOTO
Text/Photograph
LOW
1 - 99
50
HIGH
1 - 99
50
F
PRINTED PHOTO
Printed Photo
LOW
1 - 99
50
HIGH
1 - 99
50
G
PHOTOGRAPH
Photograph
LOW
1 - 99
50
HIGH
1 - 99
50
H
MAP
Map
LOW
1 - 99
50
HIGH
1 - 99
50
I
TEXT
(COPY TO COPY)
(COPY TO COPY)
Text (Copy
document)
document)
LOW
1 - 99
50
HIGH
1 - 99
50
J
TEXT/PRINTED
PHOTO
(COPY TO COPY)
PHOTO
(COPY TO COPY)
Text/Printed
Photo (Copy
document)
Photo (Copy
document)
LOW
1 - 99
50
HIGH
1 - 99
50
K
PRINTED PHOTO
(COPY TO COPY)
(COPY TO COPY)
Printed Photo
(Copy document)
(Copy document)
LOW
1 - 99
50
HIGH
1 - 99
50
L
LIGHT
Light document
LOW
1 - 99
50
HIGH
1 - 99
50
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MX-B381/B401 ADJUSTMENTS 4 – 22
12-E
Condition setting of document density
reading operation (exposure) in the auto
copy mode (Normally not required)
reading operation (exposure) in the auto
copy mode (Normally not required)
Use for setting the condition of read operation (Exposure) for docu-
ment density in monochrome auto copy mode.
When a copy with correct density is not obtained by type of docu-
ment, change the setting.
This adjustment is required in the following cases.
* When a copy with correct density is not obtained in auto mode.
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
1)
ment density in monochrome auto copy mode.
When a copy with correct density is not obtained by type of docu-
ment, change the setting.
This adjustment is required in the following cases.
* When a copy with correct density is not obtained in auto mode.
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
1)
Enter the SIM 46-19 mode.
2)
Set REALTIME, STOP or PRE-SCAN to adjustment item AE
STOP COPY. For contents of each setting item, refer to below.
Change the setting value of "AE WIDTH" item to "FULL" or
"PART", in some cases.
STOP COPY. For contents of each setting item, refer to below.
Change the setting value of "AE WIDTH" item to "FULL" or
"PART", in some cases.
NOTE: MODE1: High gamma (Improves the image contrast)
MODE2: Normal gamma
STOP:
Reads the density of 3 - 7 mm area from leading edge of
document, decides the output image density according to
the density of that part. (The output image density is con-
stant at whole area.)
REALTIME:
Reads the density of width of the document one by one,
decides the output image density according to the density
of each part of the document. (The output image density
may be not constant at whole area.)
PRESCAN:
The densities of the all surface of document are once
scanned, and the output image density is determined
according to the average of the scanned densities. (The
output image density is even for all the surface.)
AE WIDTH FULL:
Document density reading area in auto mode is 3 - 7 mm
(leading edge of document) x Document width. No relation-
ship to PRESCAN MODE
STOP:
Reads the density of 3 - 7 mm area from leading edge of
document, decides the output image density according to
the density of that part. (The output image density is con-
stant at whole area.)
REALTIME:
Reads the density of width of the document one by one,
decides the output image density according to the density
of each part of the document. (The output image density
may be not constant at whole area.)
PRESCAN:
The densities of the all surface of document are once
scanned, and the output image density is determined
according to the average of the scanned densities. (The
output image density is even for all the surface.)
AE WIDTH FULL:
Document density reading area in auto mode is 3 - 7 mm
(leading edge of document) x Document width. No relation-
ship to PRESCAN MODE
AE WIDTH PART:
Document density reading area in auto mode is 3 - 7 mm
(leading edge of document) x 100 mm (width). No relation-
ship to PRESCAN MODE
Operation in auto copy mode:
When the density of the document of the read area is light,
output image density is increased by control. When the
density of the document of the read area is dark, output
image density is decreased by control.
Document density reading area in auto mode is 3 - 7 mm
(leading edge of document) x 100 mm (width). No relation-
ship to PRESCAN MODE
Operation in auto copy mode:
When the density of the document of the read area is light,
output image density is increased by control. When the
density of the document of the read area is dark, output
image density is decreased by control.
Display/Item
Content
Set value
Default
AE_MODE
Auto exposure mode
MODE1, MODE2
MODE1
AE_STOP_COPY
Auto B/W exposure
Stop (for copy)
Stop (for copy)
REALTIME/
STOP/PRESCAN
STOP/PRESCAN
STOP
AE_STOP_FAX
Auto B/W exposure
Stop (for FAX)
Stop (for FAX)
ON/OFF
ON
AE_STOP_SCAN
Auto B/W exposure
Stop (for scanner)
Stop (for scanner)
REALTIME/
STOP/PRESCAN
STOP/PRESCAN
STOP
AE_FILTER
Auto exposure filter
setting
setting
SOFT
NORMAL
NORMAL
SHARP
SHARP
AE_WIDTH
AE exposure width
FULL
PART
PART
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3 to 7mm
100mm
3 to 7mm
Document table/RSPF mode
Document table mode
RSPF mode
AE WIDTH = FULL
AE WIDTH = PART
Document density detection area
100mm
3 to 7mm
AE WIDTH = PART
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