Sharp MX-C310 / MX-C311 / MX-C312 / MX-C380 / MX-C381 / MX-C400 / MX-C401 (serv.man125) Service Manual ▷ View online
MX-C401 ADJUSTMENTS 4 – 22
2)
Make a copy of the adjustment chart in the document table
mode.
mode.
3)
Check the copy image center position.
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.
(4.3 Inch LCD model)
(8.5/7.0 Inch LCD model)
5)
Select the adjustment mode OC.
6)
Enter the adjustment value with 10-key, and press [OK] key.
(For the 4.3 Inch LCD model, press the OSA shortcut key.)
(For the 4.3 Inch LCD model, press the OSA shortcut key.)
When the set value is increased, the main scanning print posi-
tion is shifted to the front side by 0.1mm.
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.
until the above condition is satisfied.
10-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)
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’ = 1.0mm
(100%)
A’
B’
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A
B
A = B
Front surface
A
B
A = B
Back surface
A’ - B’ = 1.0mm
(100%)
A’
B’
MX-C401 ADJUSTMENTS 4 – 23
4)
Enter the simulation 50-12 mode.
(4.3 Inch LCD model)
(8.5/7.0 Inch LCD model)
5)
Select the adjustment mode.
6)
Enter the adjustment value with 10-key, and press [OK] key.
(For the 4.3 Inch LCD model, press the OSA shortcut key.)
(For the 4.3 Inch LCD model, press the OSA shortcut key.)
When the set value is increased, the main scanning print posi-
tion is shifted to the front side by 0.1mm.
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 4) - 6)
until the above condition is satisfied.
until the above condition is satisfied.
ADJ 11
Print area (Void area)
adjustment (Print engine
section)
adjustment (Print engine
section)
This adjustment is needed in the following situations:
* When the LSU is replaced or removed.
* When a paper tray is replaced.
* When the paper tray section is disassembled.
* When the manual feed tray is replaced.
* When the manual feed tray is disassembled.
* When the switchback section is disassembled.
* When the regist roller section is disassembled.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
NOTE: Before execution of this adjustment, be sure to execute
ADJ 5 Print image magnification ratio adjustment (BK)
(Main scanning direction) (Print engine section) in
advance.
(Main scanning direction) (Print engine section) in
advance.
1)
Enter SIM50-10 mode.
(4.3 Inch LCD model)
(8.5/7.0 Inch LCD model)
2)
Set A4 (11" x 8.5") paper in the paper feed tray of the adjust-
ment target.
ment target.
3)
Select the paper feed tray of the adjustment target.
4)
Press [EXECUTE] key.
The adjustment pattern is printed.
5)
Check the adjustment pattern to confirm that the items below
are in the range of the standard values.
are in the range of the standard values.
If the above condition is not satisfied, or if it is set to a desired
condition, execute the simulation 50-1.
condition, execute the simulation 50-1.
(Note) Feed paper from all the paper feed trays to confirm.
Item
Display
Content
Setting
range
Default
value
A
OC
Document table image off-
center adjustment
center adjustment
1 - 99
50
B
SPF(SIDE1)
SPF front surface image off-
center adjustment
center adjustment
1 - 99
50
C
SPF(SIDE2)
SPF back surface image off-
center adjustment
center adjustment
1 - 99
50
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Content
Standard adjustment value
X
Lead edge void area
3.0
1.0mm
Y
Rear edge void area
2.0 - 5.0mm
Z1/Z2
FRONT/REAR void area
3.0
2.0mm
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3.0 2.0mm
Z1
3.0 1.0mm
X
3.0 2.0mm
Z2
2.0 5.0mm
Y
MX-C401 ADJUSTMENTS 4 – 24
6)
Go through the modes specified in Simulation 50-1.
(4.3 Inch LCD model)
(8.5/7.0 Inch LCD model)
7)
Select the adjustment item DEN A, DEN B, FRONT/REAR with
the scroll key, and enter the adjustment value and press [OK]
key. (For the 4.3 Inch LCD model, press the OSA shortcut
key.)
the scroll key, and enter the adjustment value and press [OK]
key. (For the 4.3 Inch LCD model, press the OSA shortcut
key.)
When the adjustment value is increased, the void area is
increased. When the adjustment value is decreased, the void
area is decreased.
increased. When the adjustment value is decreased, the void
area is decreased.
When the adjustment value is changed by 1, the void area is
changed by 0.1mm.
changed by 0.1mm.
NOTE: The adjustment value and the actual void area are related
as follows:
Adjustment value/10 = Actual void area
NOTE: When the amount of the rear edge void is different between
each paper feed tray, change the adjustment value of item
M, N, O, P, Q, R (DENB-XXX) in SIM50-1 and adjust.
M, N, O, P, Q, R (DENB-XXX) in SIM50-1 and adjust.
The adjustment item I (DENB) have a effect on the paper of
all paper feed tray.
all paper feed tray.
Adjustment value of item M, N, O, P, Q, R (DENB-XXX) fine
adjusts to adjustment item I (DENB) for each paper tray.
adjusts to adjustment item I (DENB) for each paper tray.
After execution of the above, perform procedures 1) - 5) to check
that the void area is within the specified range.
that the void area is within the specified range.
Though the lead edge void area adjustment value is proper, if the
lead edge void area is not within the specified range, change the
adjustment value of RRCB-CS1, RRCB-DSK, RRCB-MFT, RRCB-
ADUB (RRCB-XXX) of SIM 50-1.
lead edge void area is not within the specified range, change the
adjustment value of RRCB-CS1, RRCB-DSK, RRCB-MFT, RRCB-
ADUB (RRCB-XXX) of SIM 50-1.
Repeat the above procedures until a satisfactory result is obtained.
ADJ 12
Copy image position, image
loss adjustment
loss adjustment
12-A
Copy image position, image loss
adjustment (Document table mode)
adjustment (Document table mode)
This adjustment is needed in the following situations:
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When the LSU is replaced or removed.
* When the regist roller section is disassembled.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
NOTE: Before executing this adjustment, be sure to confirm that
the ADJ 11 Print area (Void area) adjustment (Print engine
section) has been completed normally.
section) has been completed normally.
Display/Item
Content
Setting
range
De-
fault
A
Lead
edge
adjust-
ment
value
edge
adjust-
ment
value
RRCA
Document lead edge
reference position
(OC)
reference position
(OC)
0 - 99
50
B
RRCB-CS1
Resist
motor ON
timing
adjust-
ment
motor ON
timing
adjust-
ment
Standard
Tray
Tray
1 - 99
50
C
RRCB-DSK
Desk
1 - 99
50
D
RRCB-MFT
Manual
paper
feed
paper
feed
1 - 99
50
E
RRCB-ADU
ADU
1 - 99
50
F
Image
loss area
setting
value
loss area
setting
value
LEAD
Lead edge image
loss area setting
loss area setting
0 - 99
30
G
SIDE
Side image loss area
adjustment
adjustment
0 - 99
20
H
Void area
adjust-
ment
adjust-
ment
DENA
Lead edge void area
adjustment
adjustment
1 - 99
30
I
DENB
Rear edge void area
adjustment
adjustment
1 - 99
30
J
FRONT/
REAR
REAR
FRONT/REAR void
area adjustment
area adjustment
1 - 99
30
K
Off-center
adjus-
tment
adjus-
tment
OFSET_OC
OC document off-
center adjustment
center adjustment
1 - 99
50
L
Magnifi-
cation
ratio
correction
cation
ratio
correction
SCAN_
SPEED_OC
SPEED_OC
SCAN sub scanning
magnification ratio
adjustment (CCD)
magnification ratio
adjustment (CCD)
1 - 99
50
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M
Sub
scanning
direction
print area
correction
value
scanning
direction
print area
correction
value
DENB-MFT
Manual feed
correction value
correction value
1 - 99
50
N
DENB-CS1
Tray 1 correction
value
value
1 - 99
50
O
DENB-CS2
Tray 2 correction
value
value
1 - 99
50
P
DENB-CS3
Tray 3 correction
value
value
1 - 99
50
Q
DENB-CS4
Tray 4 correction
value
value
1 - 99
50
R
DENB-ADU
ADU correction value
1 - 99
50
Display/Item
Content
Setting
range
De-
fault
MX-C401 ADJUSTMENTS 4 – 25
1)
Place a scale on the document table as shown in the figure
below.
below.
Place a scale so that it is in parallel with the scanning direction
and that its lead edge is in contact with the document guide
plate.
and that its lead edge is in contact with the document guide
plate.
Place white paper on the document table so that the scale lead
edge can be seen.
edge can be seen.
2)
Go through the modes specified in Simulation 50-1.
(4.3 Inch LCD model)
(8.5/7.0 Inch LCD model)
3)
Set RRCA, LEAD, and SIDE to the default values.
4)
Perform the image lead edge reference position adjustment.
Shift from the simulation mode to the copy mode and make a
copy in 100% mode and in 200% mode.
copy in 100% mode and in 200% mode.
When the adjustment value of RRCA is proper, the lead edge
image from 3.0mm is not copied in either of 100% and 200%
copy scale.
image from 3.0mm is not copied in either of 100% and 200%
copy scale.
If not, change and adjust the RRCA value.
(Adjust so that the lead edge image from 3.0mm is not copied
in either of different copy magnification ratios.)
in either of different copy magnification ratios.)
Repeat the above procedures until a satisfactory result is
obtained.
obtained.
5)
Image loss adjustment
When the adjustment item of the image loss below is set to the
default value, it is adjusted to the standard state. If it is not in
the below standard state, or when it is set to a desired value,
change these adjustment items.
default value, it is adjusted to the standard state. If it is not in
the below standard state, or when it is set to a desired value,
change these adjustment items.
Void area: 3.0mm, Image loss: 3.0mm
Display/Item
Content
Setting
range
De-
fault
A
Lead
edge
adjust-
ment
value
edge
adjust-
ment
value
RRCA
Document lead edge
reference position
(OC)
reference position
(OC)
0 - 99
50
B
RRCB-CS1
Resist
motor ON
timing
adjust-
ment
motor ON
timing
adjust-
ment
Standard
Tray
Tray
1 - 99
50
C
RRCB-DSK
Desk 1
-
99
50
D
RRCB-MFT
Manual
paper
feed
paper
feed
1 - 99
50
E
RRCB-ADU
ADU
1 - 99
50
F
Image
loss area
setting
value
loss area
setting
value
LEAD
Lead edge image
loss area setting
loss area setting
0 - 99
30
G
SIDE
Side image loss area
adjustment
adjustment
0 - 99
20
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H
Void area
adjust-
ment
adjust-
ment
DENA
Lead edge void area
adjustment
adjustment
1 - 99
30
I
DENB
Rear edge void area
adjustment
adjustment
1 - 99
30
J
FRONT/
REAR
REAR
FRONT/REAR void
area adjustment
area adjustment
1 - 99
30
K
Off-center
adjust-
ment
adjust-
ment
OFSET_OC
OC document off-
center adjustment
center adjustment
1 - 99
50
L
Magnifica
tion ratio
correction
tion ratio
correction
SCAN_
SPEED_OC
SPEED_OC
SCAN sub scanning
magnification ratio
adjustment (CCD)
magnification ratio
adjustment (CCD)
1 - 99
50
M
Sub
scanning
direction
print area
correction
value
scanning
direction
print area
correction
value
DENB-MFT
Manual feed
correction value
correction value
1 - 99
50
N
DENB-CS1
Tray 1 correction
value
value
1 - 99
50
O
DENB-CS2
Tray 2 correction
value
value
1 - 99
50
P
DENB-CS3
Tray 3 correction
value
value
1 - 99
50
Q
Sub
scanning
direction
print area
correction
value
scanning
direction
print area
correction
value
DENB-CS4
Tray 4 correction
value
value
1 - 99
50
R
DENB-ADU
ADU correction value
1 - 99
50
Display/Item
Content
Setting
range
De-
fault
100%
200%
Paper lead
edge
edge
Scale image 3.0mm position
5mm 10mm
5mm
10mm
5mm
10mm
4
3
2
1
Paper lead edge
Copy area
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