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Model
MX-B381 MX-B401 (serv.man7)
Pages
127
Size
46.25 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / JAN 2011 REVISED SERVICE MANUAL
File
mx-b381-mx-b401-sm7.pdf
Date

Sharp MX-B381 / MX-B401 (serv.man7) Service Manual ▷ View online

MX-B381/B401  SIMULATION  5 – 52
 
44-25
Purpose
Setting
Function (Purpose) Used to set the calculating conditions of the
correction value for the half tone process
control.
Section
Process
Operation/Procedure
1)
Select a target adjustment density level with [
] [] key.
2)
Enter the set value with 10-key.
3)
Press [OK] key.
NOTE: Set the items to the default values unless a change is spe-
cially required.
 
44-26
Purpose
Adjustment/Setup
Function (Purpose) Used to execute the half tone process con-
trol compulsorily.
Section
Process
Operation/Procedure
Press [EXECUTE] key.
The half tone process control is performed and the operation data
are displayed.
 
44-27
Purpose
Data clear
Function (Purpose) Used to clear the correction data of the half
tone process control.
Section
Process
Operation/Procedure
1)
Press [EXECUTE] key.
2)
Press [YES] key.
The correction data of the half tone process control are
cleared.
 
44-28
Purpose
Adjustment/Setup
Function (Purpose) Used to set the process control execution
conditions.
Section
Process
Operation/Procedure
1)
Select a target item of setting with [
] [] key on the touch
panel.
2)
Enter the set value with 10-key.
3)
Press [OK] key. (The set value is saved.)
NOTE: Set the items to the default values unless a change is spe-
cially required.
Item/Display
Content
Setting 
range
Default 
value
A
LOW FIELD 
LOWER LIMIT
Low density approximate 
expression data lower limit 
value
0 - 255
98
B
LOW FIELD 
UPPER LIMIT
Low density approximate 
expression data upper 
limit value
0 - 255
60
C
MID FIELD 
LOWER LIMIT
Medium density 
approximate expression 
data lower limit value
0 - 255
90
D
MID FIELD 
UPPER LIMIT
Medium density 
approximate expression 
data upper limit value
0 - 255
6
E
HIGHLIGHT 
POINT
Reference point of the 
highlight correction 
amount
1 - 8
7
INTERRUPTION
Forcible interruption
COMPLETE
Normal complete
ERROR BLACK SENSOR 
ADJUSTMENT
Image density sensor adjustment error
[K]
High density process control error
OTHER
Other error
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MX-B381/B401  SIMULATION  5 – 53
*1: When REFRESH MODE setting is enabled (0), the menu of the user process control execution button is displayed on the user system 
setting menu.
When the density change is not within the allowable range, the user can perform the process control manually and forcibly. However, toner 
is consumed grater than as usual. This point must be explained to the user clearly.
Mode
Item/Display
Content
Setting range
Default 
value
Process control 
Enable/Disable 
setting
A
INITIAL
YES
When warm-up after clearing the 
counter of the OPC drum and the 
developer unit
Enable
0 - 1
0
0
NO
Disable
1
B
SW ON
When supplying the power (when 
clearing shut-off.)
Process control Disable
1 - 3
1
3
BK process control Enable
2
Pixel count judgment 
(Judgment is based on the 
setting value of item K, L.)
3
C
TIME
After passing the specified time from 
leaving READY continuously (Time can 
be changed by INTERVAL TIME)
Process control Disable
1 - 3
1
3
BK process control Enable
2
Pixel count judgment
(Judgment is based on the 
setting value of item K, L.)
3
D
HUM_LIMIT
HUM judgment is made when turning 
ON the power and after passing TIME.
Process control Disable
1 - 2
1
2
BK process control Enable
2
E
HUM
The temperature and humidity in side 
the machine are monitored only during 
a job for every 2hours (set by item N). 
When the changes in the temperature 
and the humidity are greater than the 
specified level (the set value of item O) 
in comparison with the previous 
process control.
Process control Disable
1 - 2
1
2
BK process control Enable
2
F
REV1
YES
The accumulated traveling distance of 
BK or M position OPC unit reaches the 
specified level after turning the power.
Enable
0 - 1
0
0
NO
Inhibit
1
G
REV2_BK
YES
The accumulated traveling distance of 
BK position OPC drum unit reaches the 
specified level from execution of the 
previous density correction.
Enable
0 - 1
0
0
NO
Inhibit
1
H
REFRESH 
MODE(*1)
YES
Select of YES/NO of the manual 
process control key with key operation
Key operation display
0 - 1
0
1
NO
Key operation NO display
1
I
DAY
When the next warm-up if there is no 
job after a job after passing the 
specified days from execution of the 
previous process control
Disable of the specified 
days judgment
0 - 999
0
1
1 - 999 days passing
1 - 999
Process control 
conditions 
setting
J
PIX_RATIO_BK
Magnification ratio setting (%) of the BK toner count specified value 
entry of 100 corresponds to 1k of A4 5% print.
1 - 999
10
K
INTERVAL TIME
Passing time setting of "TIME" (h: hour)
1-255 
(1-255: 1-255h passed)
12
L
HUM HOUR
Interval setting of the temperature and humidity monitoring time of 
"HUM" (h: hour)
1 - 24
2
M
HUM_DIF
Area difference specified value when compared with the execution of 
the previous process control of "HUM”
1 - 9
2
N
BK_RATIO
Magnification ratio setting (%) of the specified value of the BK position 
OPC drum traveling distance of "REV2_BK”
1-999 
(Entry of 20 corresponds 
to 100,000mm.)
15
O
HT_DIF
Bias change difference value used for judgment of HT process control
1 - 255
40
Secondary 
transfer 
cleaning setting
P
2TRAN_CLEAN_TIME1
Secondary transfer cleaning process time judgment threshold value 1
1 - 999
200
Q
2TRAN_CLEAN_TIME2
Secondary transfer cleaning process time judgment threshold value 2
1 - 999
300
R
2TRAN_CLEAN_TIME3
Secondary transfer cleaning process time judgment threshold value 3
1 - 999
500
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MX-B381/B401  SIMULATION  5 – 54
 
44-29
Purpose
Setting
Function (Purpose) Used to set the operating conditions of the
process control during a job.
Section
Process
Operation/Procedure
1)
Select a target item of setting with [
] [] key on the touch
panel.
2)
Enter the set value with 10-key.
3)
Press [OK] key.
HV: High density process control
HT: Half tone process control
 
44-37
Purpose
Adjustment/Setup
Function (Purpose) Used to set the development bias correc-
tion level in the continuous printing opera-
tion.
Section
Operation/Procedure
1)
Select a target item with [
] [] buttons.
2)
Enter the set value with 10-key.
3)
Press [OK] key.
NOTE: When the print density is varied in the continuous printing
operation, this simulation is used.
<Use example>
 
44-43
Purpose
Data display
Function (Purpose) Used to display the identification informa-
tion of the developing unit.
Section
Developing system
Operation/Procedure
The identification number and the identification signal level of the
developing unit are displayed.
 
46
 
46-2
Purpose
Adjustment
Function (Purpose) Used to adjust the copy density in the copy
mode.
Section
Operation/Procedure
1)
Select an adjustment target item with [
] [] key.
2)
Enter the set value with 10-key.
* When the     key is pressed, the setting value of each
item can be changed with 1up (1down) collectively.
3)
Press [OK] key. (The set value is saved.)
To adjust the copy density in the low density area, select the "LOW"
mode and change the adjustment value. To adjust the copy density
in the high density area, select the "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 den-
sity is decreased.
Item/Display
Content
Setting range
Default 
value
A
COPY
During copy job
0 - 2
0: No execution
1: HV only
3: HV 
 HT
2
B
PRINTER
During print job
2
C
FAX
During FAX print 
job
2
D
SELF PRINT
During self print
2
Item/
Display
Default 
value
Variable 
range
Current DV 
Bias voltage
less than 300[v]
A
0
0-5 (*1)
300[v] or more, less than 
450[v]
B
0
450[v] or more
C
0
Time (T) from 
termination 
of continuous 
outputs to 
start of the 
next output 
operation
Less than 10 [sec] & 
after process control 
JOB
D
4
1-12 (*2)
10 [sec] or more, less 
than 60 [sec]
E
3
60 [sec] or more, less 
than 240 [sec]
F
1
240 [sec] or more
G
1
(*1)
The default of A/B/C is "0" and this function is set to OFF.
When 10 sheets are copied in the multi copy mode and if the 10th 
sheet is lighter than the 1st sheet, set to the range of 1 - 5. The 
greater the value is, the darker the density of the 10th sheet is.
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(*2)
The correction amount is adjusted by the length of the leaving time. 
When (*1) is 1 - 5, the greater the value of (*2), the greater the 
density when starting printing is.
Item/Display
Content
Display 
range
A
DVCH KIND K
Development unit identification number
1 - 9
B
DVCH_AD_K
Developing unit identification number 
AD value
0 - 255
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MX-B381/B401  SIMULATION  5 – 55
 
46-4
Purpose
Adjustment (Color scanner mode)
Function (Purpose) Used to adjust the density in the image
send mode.
Section
Operation/Procedure
1)
Select an adjustment target item with [
] [] key.
2)
Enter the set value with 10-key.
* When the     key is pressed, the setting value of each
item can be changed with 1up (1down) collectively.
3)
Press [OK] key. (The set value is saved.)
When the adjustment value is increased, the image density is
increased, and vice versa.
 
46-5
Purpose
Adjustment (Monochrome scanner mode)
Function (Purpose) Used to adjust the density in the image
send mode.
Section
Operation/Procedure
1)
Select an adjustment target item with [
] [] key.
2)
Enter the set value with 10-key.
* When the     key is pressed, the setting value of each
item can be changed with 1up (1down) collectively.
3)
Press [OK] key. (The set value is saved.)
When the adjustment value is increased, the image density is
increased, and vice versa.
 
46-8
Purpose
Adjustment (Color scanner mode)
Function (Purpose) Used to adjust the image send mode color
balance RGB.
Section
Operation/Procedure
1)
Select an adjustment target.
2)
Select an adjustment target item with [
] [] key.
3)
Enter the set value with 10-key.
4)
Press [OK] key. (The set value is saved.)
The density can be adjusted separately for the low density area
and the high density area.
When the adjustment value is increased, the image density of the
target color is increased, and vice versa.
Item/Display
Content
Setting 
range
Default 
value
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
Text/Printed 
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)
Text (Copy 
document)
LOW
1 - 99
50
HIGH
1 - 99
50
J
TEXT/PRINTED 
PHOTO (COPY TO 
COPY)
Text/Printed 
Photo (Copy 
document)
LOW
1 - 99
50
HIGH
1 - 99
50
K
PRINTED PHOTO 
(COPY TO COPY)
Printed Photo 
(Copy 
document)
LOW
1 - 99
50
HIGH
1 - 99
50
L
LIGHT
Light 
document
LOW
1 - 99
50
HIGH
1 - 99
50
Item/Display
Content
Setting 
range
Default 
value
A
AUTO
Auto
1 - 99
50
B
TEXT
Text
1 - 99
50
C
TEXT/PRINTED 
PHOTO
Text/Printed Photo
1 - 99
50
D
TEXT/PHOTO
Text/Photograph
1 - 99
50
E
PRINTED PHOTO
Printed Photo
1 - 99
50
F
PHOTOGRAPH
Photograph
1 - 99
50
G
MAP
Map
1 - 99
50
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Item/Display
Content
Setting 
range
Default 
value
A
AUTO TEXT
Automatic/Text
1 - 99
50
B
TEXT
Text
1 - 99
50
C
TEXT/PRINTED 
PHOTO
Text/Printed Photo
1 - 99
50
D
TEXT/PHOTO
Text/Photograph
1 - 99
50
E
PRINTED PHOTO
Printed Photo
1 - 99
50
F
PHOTOGRAPH
Photograph
1 - 99
50
G
MAP
Map
1  -  99
50
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2.
Page of 127
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