Sharp MX-B381 / MX-B401 (serv.man7) Service Manual ▷ View online
MX-B381/B401 ADJUSTMENTS 4 – 7
6)
Change the adjustment value.
Enter the adjustment value and press [OK] key.
When [EXECUTE] key is pressed, the adjustment pattern is
printed.
Enter the adjustment value and press [OK] key.
When [EXECUTE] key is pressed, the adjustment pattern is
printed.
When the adjustment value is increased, the adjustment pattern is
shifted to the front frame side. When it is decreased, the adjust-
ment pattern is shifted to the rear frame side.
When the set value is changed by 1, the shift distance is changed
by about 0.1mm.
Repeat procedures 5) - 6) until the conditions of procedure 5) are
satisfied.
shifted to the front frame side. When it is decreased, the adjust-
ment pattern is shifted to the rear frame side.
When the set value is changed by 1, the shift distance is changed
by about 0.1mm.
Repeat procedures 5) - 6) until the conditions of procedure 5) are
satisfied.
ADJ 6
Scan image magnification ratio
adjustment
(Document table mode)
adjustment
(Document table mode)
This adjustment is needed in the following situations:
* When the copy magnification ratio is not proper.
* When the scanner motor is replaced.
* When the carriage unit is replaced.
* When the scanner unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
* When the copy magnification ratio is not proper.
* When the scanner motor is replaced.
* When the carriage unit is replaced.
* When the scanner unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
6-A
Scan image magnification ratio adjustment
(Main scanning direction) (Document table
mode)
(Main scanning direction) (Document table
mode)
NOTE: It is advisable to set the image magnification ratio adjust-
ment value in the main scanning direction to the default.
If the adjustment value is set to other than the default
value, image quality may be affected.
Changing the adjustment value to other than the default
value is allowed only when a high emphasis is placed on
the accuracy of the image magnification ratio.
If the adjustment value is set to other than the default
value, image quality may be affected.
Changing the adjustment value to other than the default
value is allowed only when a high emphasis is placed on
the accuracy of the image magnification ratio.
1)
Place a scale on the document table as shown in the figure
below.
below.
2)
Enter the simulation 48-1 mode.
3)
Make a normal copy and obtain the copy magnification ratio.
4)
Check that the copy magnification ratio is within the specified
range (100
range (100
1.5%).
If the copy magnification ratio is within the specified range (100
1.5%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, perform the following
procedure.
1.5%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, perform the following
procedure.
5)
Change the adjustment value of the adjustment item CCD
(MAIN) of SIM48-1.
When the adjustment value is increased, the copy magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.1%.
(MAIN) of SIM48-1.
When the adjustment value is increased, the copy magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.1%.
Repeat the procedures 3) - 5) until the copy magnification ratio is
within the specified range (100
within the specified range (100
1.5%).
6-B
Scan image magnification ratio adjustment
(Sub scanning direction)
(Document table mode)
(Sub scanning direction)
(Document table mode)
1)
Place a scale on the document table as shown in the figure
below.
below.
2)
Enter the simulation 48-1 mode.
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2.
Item/Display
Content
Setting
range
Default
value
A
CCD (MAIN)
SCAN main scanning
magnification ratio adjustment
(CCD)
magnification ratio adjustment
(CCD)
1 - 99
50
B
CCD (SUB)
SCAN sub scanning
magnification ratio adjustment
(CCD)
magnification ratio adjustment
(CCD)
1 - 99
50
Item/Display
Content
Setting
range
Default
value
A
CCD (MAIN)
SCAN main scanning
magnification ratio
adjustment (CCD)
magnification ratio
adjustment (CCD)
1 - 99
50
B
CCD (SUB)
SCAN sub scanning
magnification ratio
adjustment (CCD)
magnification ratio
adjustment (CCD)
1 - 99
50
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2.
MX-B381/B401 ADJUSTMENTS 4 – 8
3)
Make a normal copy and obtain the copy magnification ratio.
4)
Check that the copy magnification ratio is within the specified
range (100
range (100
0.8%).
If the copy magnification ratio is within the specified range (100
0.8%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, perform the following
procedure.
0.8%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, perform the following
procedure.
5)
Change the adjustment value of the adjustment item CCD
(SUB) of SIM48-1.
When the adjustment value is increased, the copy magnifica-
tion ratio in the sub scanning direction is increased.
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.1%.
(SUB) of SIM48-1.
When the adjustment value is increased, the copy magnifica-
tion ratio in the sub scanning direction is increased.
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.1%.
Repeat the procedures 3) - 5) until the copy magnification ratio is
within the specified range (100
within the specified range (100
0.8%).
ADJ 7
Scan image magnification ratio
adjustment (Main/sub scanning
direction) (RSPF mode)
adjustment (Main/sub scanning
direction) (RSPF mode)
NOTE: To execute this adjustment, the carriage unit must have
been properly installed. To execute this adjustment, the OC
mode adjustment when copying must have been com-
pleted.
mode adjustment when copying must have been com-
pleted.
7-A
Scan image magnification ratio adjustment
(Main scanning direction) (RSPF mode)
(Main scanning direction) (RSPF mode)
1)
Place the duplex adjustment chart shown below on the docu-
ment tray of the RSPF.
The adjustment chart is prepared by the following procedures.
Use A4 (11" x 8.5") paper, and put marks on both sides and
both surfaces of the paper at 10mm from each edge.
ment tray of the RSPF.
The adjustment chart is prepared by the following procedures.
Use A4 (11" x 8.5") paper, and put marks on both sides and
both surfaces of the paper at 10mm from each edge.
2)
Make a duplex copy at the normal ratio on A4 paper.
3)
Measure the images on the copy paper and the original
images.
images.
4)
Obtain the image magnification ratio according to the following
formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If the image magnification ratio is within the specified range
(100
formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If the image magnification ratio is within the specified range
(100
1.5%), there is no need to perform the adjustment.
If it is not within the specified range, perform the following pro-
cedures.
cedures.
5)
Enter the SIM48-1 mode.
6)
Select an adjustment item of SPF (MAIN)/SPFB (MAIN) with
the scroll key.
SPF (MAIN): Main scanning direction image magnification
ratio (Front surface)
SPFB (MAIN): Main scanning direction image magnification
ratio (Back surface)
the scroll key.
SPF (MAIN): Main scanning direction image magnification
ratio (Front surface)
SPFB (MAIN): Main scanning direction image magnification
ratio (Back surface)
10
20
90
100
110
10
20
90
100
110
10
20
90
100
110
(Example 1)
Copy A
(Shorter than
the original)
Copy A
(Shorter than
the original)
(Example 2)
Copy B
(Longer than
the original)
Copy B
(Longer than
the original)
Scale
(Original)
(Original)
Copy magnifi-
cation ratio
cation ratio
(Original dimension - Copy dimension)
Original dimension
100%
(Both the front surface
and the back surface)
Paper pass
direction
A4 size
10mm
10mm
Item
Display
Content
Setting
range
Default
value
C
SPF (MAIN)
RSPF document front
surface magnification ratio
adjustment (Main scan)
surface magnification ratio
adjustment (Main scan)
1 - 99
50
D
SPF (SUB)
RSPF document front
surface magnification ratio
adjustment (Sub scan)
surface magnification ratio
adjustment (Sub scan)
1 - 99
50
E
SPFB (MAIN)
RSPF document back
surface magnification ratio
adjustment (Main scan)
surface magnification ratio
adjustment (Main scan)
1 - 99
50
F
SPFB (SUB)
RSPF document back
surface magnification ratio
adjustment (Sub scan)
surface magnification ratio
adjustment (Sub scan)
1 - 99
50
original
copy
10
50
100
150
200
10
50
100
150
200
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2.
MX-B381/B401 ADJUSTMENTS 4 – 9
7)
Enter an adjustment value with 10-key, and press [OK] key.
When the adjustment value is increased, the image magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the image magni-
fication ratio is changed by 0.02%.
When the adjustment value is increased, the image magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the image magni-
fication ratio is changed by 0.02%.
Repeat the procedures of 2) - 7) until a satisfactory result is
obtained.
obtained.
7-B
Scan image magnification ratio adjustment
(Sub scanning direction) (RSPF mode)
(Sub scanning direction) (RSPF mode)
1)
Place the duplex adjustment chart shown below on the docu-
ment tray of the RSPF.
The adjustment chart is prepared by the following procedures.
Use A4 (11" x 8.5") paper, and put marks on both sides and
both surfaces of the paper at 10mm from each edge.
ment tray of the RSPF.
The adjustment chart is prepared by the following procedures.
Use A4 (11" x 8.5") paper, and put marks on both sides and
both surfaces of the paper at 10mm from each edge.
2)
Make a duplex copy at the normal ratio on A4 paper.
3)
Measure the images on the copy paper and the original
images.
images.
4)
Obtain the image magnification ratio according to the following
formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If the image magnification ratio is within the specified range
(100
formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If the image magnification ratio is within the specified range
(100
1.5%), there is no need to perform the adjustment.
If it is not within the specified range, perform the following pro-
cedures.
cedures.
5)
Enter the SIM48-1 mode.
6)
Select an adjustment item of SPF (MAIN)/SPFB (MAIN) with
the scroll key.
SPF (SUB): Sub scanning direction image magnification ratio
(Front surface)
SPFB (SUB): Sub scanning direction image magnification ratio
(Back surface)
the scroll key.
SPF (SUB): Sub scanning direction image magnification ratio
(Front surface)
SPFB (SUB): Sub scanning direction image magnification ratio
(Back surface)
7)
Enter an image magnification ratio adjustment value with 10-
key, and press [OK] key.
When the adjustment value is increased, the image magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the image magni-
fication ratio is changed by 0.01%.
key, and press [OK] key.
When the adjustment value is increased, the image magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the image magni-
fication ratio is changed by 0.01%.
Repeat the procedures of 2) - 7) until a satisfactory result is
obtained.
obtained.
ADJ 8
Scan image off-center
adjustment
adjustment
This adjustment is needed in the following situations:
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When the RSPF section is disassembled.
* When the RSPF unit is installed.
* When the RSPF unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When the RSPF section is disassembled.
* When the RSPF unit is installed.
* When the RSPF unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
Paper pass
direction
A4 size
10mm
10mm
original
10
50
100
150
200
250
copy
10
50
100
150
200
250
Item
Display
Content
Setting
range
Default
value
C
SPF (MAIN)
RSPF document front
surface magnification ratio
adjustment (Main scan)
surface magnification ratio
adjustment (Main scan)
1 - 99
50
D
SPF (SUB)
RSPF document front
surface magnification ratio
adjustment (Sub scan)
surface magnification ratio
adjustment (Sub scan)
1 - 99
50
E
SPFB (MAIN)
RSPF document back
surface magnification ratio
adjustment (Main scan)
surface magnification ratio
adjustment (Main scan)
1 - 99
50
F
SPFB (SUB)
RSPF document back
surface magnification ratio
adjustment (Sub scan)
surface magnification ratio
adjustment (Sub scan)
1 - 99
50
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2.
MX-B381/B401 ADJUSTMENTS 4 – 10
8-A
Scan image off-center adjustment
(Document table mode)
(Document table mode)
1)
Make an adjustment chart. (Draw a line at the center in parallel
with the paper transport direction.)
with the paper transport direction.)
2)
Make a copy of the adjustment chart in the document table
mode.
mode.
3)
Check the copy image center position.
If A’ - B’ =
If A’ - B’ =
4.0mm, the adjustment is not required.
If the above condition is not satisfied, perform the following
procedures.
procedures.
4)
Enter the simulation 50-12 mode.
5)
Select the adjustment mode OC.
6)
Enter the adjustment value with 10-key, and press [OK] key.
When the set value is increased, the main scanning print posi-
tion is shifted to the front side by 0.1mm.
When the set value is increased, the main scanning print posi-
tion is shifted to the front side by 0.1mm.
7)
Make a copy, and check the position of the copy image center.
Change the adjustment value and perform procedures 5) - 6)
until the above condition is satisfied.
Change the adjustment value and perform procedures 5) - 6)
until the above condition is satisfied.
8-B
Scan image off-center adjustment
(RSPF mode)
(RSPF mode)
NOTE: To execute this adjustment, the paper off-center must have
been adjusted properly.
1)
Make an adjustment chart. (Draw a line at the center of both
surfaces in parallel with the paper transport direction.)
surfaces in parallel with the paper transport direction.)
2)
Set the adjustment chart on the RSPF, and make a copy in the
duplex copy mode.
duplex copy mode.
3)
Check the copy image center position.
(Single)
(Single)
If A’ - B’ =
5.0mm, the adjustment is not required.
(Duplex) If A’ - B’ =
5.4mm, the adjustment is not required.
If the above condition is not satisfied, perform the following
procedures.
procedures.
A
B
A = B
A’ - B’ = 4.0mm
(100%)
A’
B’
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2.
A
B
A = B
Front surface
A
B
A = B
Back surface
(Single) A’ - B’ =
5.0mm
(Duplex) A’ - B’ =
5.4mm
(100%)
A’
B’
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