Sharp MX-3050N / MX-3060N / MX-3070N / MX-3550N / MX-3560N / MX-3570N / MX-4050N / MX-4060N / MX-4070N (serv.man6) Service Manual ▷ View online
MX-4070V ADJUSTMENTS AND SETTINGS 5 – 11
8) Turn the LSU skew adjustment screw of the adjustment target
color to adjust.
Skew adjustment screw rotation direction
When the F side is skewed to the right side for R side:
Turn the screw clockwise.
When the F side is skewed to the left side for the R side:
Turn the screw counterclockwise.
When the F side is skewed to the right side for R side:
Turn the screw clockwise.
When the F side is skewed to the left side for the R side:
Turn the screw counterclockwise.
Reference of the rotation amount of the skew adjustment
screw
Skew of difference by one step between F and R sides (differ-
ence by one scale of the fine adjustment check scale) / turn for
about 2 clicks.
Repeat the procedure 7) to 8) until satisfactory result is
obtained.
screw
Skew of difference by one step between F and R sides (differ-
ence by one scale of the fine adjustment check scale) / turn for
about 2 clicks.
Repeat the procedure 7) to 8) until satisfactory result is
obtained.
5-C
Color registration offset adjustment
(No need to adjust normally)
(No need to adjust normally)
This adjustment is used to set the offset value for the auto color
registration adjustment (ADJ5A).
If there is any difference in color phase at the center and the four
corner of an actual print image, this adjustment may improve it.
Especially when there is any color shift at the center area, this
adjustment may improve it effectively. This adjustment cannot elim-
inate color shifts in all the areas, but average the overall color
shifts. After the auto adjustment, use this color registration offset
adjustment to correct color shift partially, performing the adjustment
efficiently.
registration adjustment (ADJ5A).
If there is any difference in color phase at the center and the four
corner of an actual print image, this adjustment may improve it.
Especially when there is any color shift at the center area, this
adjustment may improve it effectively. This adjustment cannot elim-
inate color shifts in all the areas, but average the overall color
shifts. After the auto adjustment, use this color registration offset
adjustment to correct color shift partially, performing the adjustment
efficiently.
Before execution of this adjustment, check to confirm that the fol-
lowing adjustment has been performed.
*ADJ5A or ADJ5B image skew adjustment (LSU unit)
lowing adjustment has been performed.
*ADJ5A or ADJ5B image skew adjustment (LSU unit)
Kinds of adjustment values
There are following two kinds of registration adjustment values.
• Base registration adjustment value: XXX (FRONT) / XXX
There are following two kinds of registration adjustment values.
• Base registration adjustment value: XXX (FRONT) / XXX
(REAR)
They are manual adjustment values and auto adjustment values
and reflected when the auto registration adjustment is executed.
If varies for every operation of the auto registration adjustment.
They are manual adjustment values and auto adjustment values
and reflected when the auto registration adjustment is executed.
If varies for every operation of the auto registration adjustment.
• offset adjustment value: OFFSETXXF / OFFSETXXR
They are the offset adjustment values added to the above base
registration adjustment values and are not changed unless
SIM50-20 is executed to change.
registration adjustment values and are not changed unless
SIM50-20 is executed to change.
1) Enter SIM 50-20 mode.
2) Select the paper feed tray with A3 (11” x 17”) paper in it.
3) Touch [EXECUTE] key.
2) Select the paper feed tray with A3 (11” x 17”) paper in it.
3) Touch [EXECUTE] key.
The color image registration check pattern is printed.
4)
Check the color image registration.
There 6 color image registrations in total, two on each of the F
side, the R side and the center. Check all the patterns to con-
firm that they are within the specified range. Also check to con-
firm that there is not much shift in each color image registration
check pattern.
There 6 color image registrations in total, two on each of the F
side, the R side and the center. Check all the patterns to con-
firm that they are within the specified range. Also check to con-
firm that there is not much shift in each color image registration
check pattern.
There are two kinds of adjustment, one in the main scanning direc-
tion and the other in the sub scanning direction. The vertical direc-
tion in the above figure is that in the main scanning direction and
the horizontal direction is that in the sub scanning direction.
There are also two kinds of adjustments the rough adjustment and
the fine adjustment. Perform the rough adjustment then perform the
fine adjustment deliberately.
For the main scan direction image registration the offset on the F
side the R side and at the center is independently adjusted.
If there is a difference in the sub scanning direction image registra-
tion between the F and R sides, perform the skew adjustment
AJ5A.
tion and the other in the sub scanning direction. The vertical direc-
tion in the above figure is that in the main scanning direction and
the horizontal direction is that in the sub scanning direction.
There are also two kinds of adjustments the rough adjustment and
the fine adjustment. Perform the rough adjustment then perform the
fine adjustment deliberately.
For the main scan direction image registration the offset on the F
side the R side and at the center is independently adjusted.
If there is a difference in the sub scanning direction image registra-
tion between the F and R sides, perform the skew adjustment
AJ5A.
Check the print patterns of the rough adjustment and the fine
adjustment of 18 check patterns.
adjustment of 18 check patterns.
How to check the rough adjustment pattern and input of the
adjustment value:
Visually check the color image registration check section, use the
center position of the black scale as the reference and check the
shift balance in the positive and negative directions at the color
image line position.
Use the center position of the black scale as the reference and
check that the color image line is symmetrical in the positive side
and the negative side.
If shift is in the arrow mark X1 and Y1 increase the adjustment
value. if shift is in the arrow mark X2 and Y2 decrease the adjust-
ment value.
The reference arrow on the check pattern faces the positive direc-
tion.
adjustment value:
Visually check the color image registration check section, use the
center position of the black scale as the reference and check the
shift balance in the positive and negative directions at the color
image line position.
Use the center position of the black scale as the reference and
check that the color image line is symmetrical in the positive side
and the negative side.
If shift is in the arrow mark X1 and Y1 increase the adjustment
value. if shift is in the arrow mark X2 and Y2 decrease the adjust-
ment value.
The reference arrow on the check pattern faces the positive direc-
tion.
Guideline on adjustment value
1 scale/20 (Changing the set value by 20 shifts the scale by one.)
1 scale/20 (Changing the set value by 20 shifts the scale by one.)
Checking fine adjustment pattern and entering the adjustment
value
Check whether the darkest spot (one of five spots usually seen) is
within the center area of reference frame for image registration fine
adjustment in the square frame.
value
Check whether the darkest spot (one of five spots usually seen) is
within the center area of reference frame for image registration fine
adjustment in the square frame.
Rear pattern
Center pattern
Front pattern
Reference arrow mark
A-sub
B-sub
B-main
X1
X2
Y2
Y1
A-main
Color image shift check
scale (Fine adjustment)
C (Image shift fine adjustment
reference frame)
Color image shift
check section
(Rough adjustment)
A-main: Main scan rough adjustment pattern
A-sub: Sub scan rough adjustment pattern
B-main: Main scan fine adjustment scale
B-sub: Sub scan fine adjustment scale
C: Main scan sub scan fine adjustment pattern
MX-4070V ADJUSTMENTS AND SETTINGS 5 – 12
At that time, use the color image registration check scale (for fine
adjustment) as reference.
Assume the spot where looks the darkest color as center and read
out the shift amount.
Check whether the center position of the dark density section is
within ± 1 step.
(The adjustment won’t be necessary if the print pattern for fine
adjustment is placed 0 ± 1 step of reference pattern.)
Increase the adjustment value if the position is shifting toward the
arrow X1 or Y1. Decrease the value if shifting toward the arrow X2
or Y2.
adjustment) as reference.
Assume the spot where looks the darkest color as center and read
out the shift amount.
Check whether the center position of the dark density section is
within ± 1 step.
(The adjustment won’t be necessary if the print pattern for fine
adjustment is placed 0 ± 1 step of reference pattern.)
Increase the adjustment value if the position is shifting toward the
arrow X1 or Y1. Decrease the value if shifting toward the arrow X2
or Y2.
Reference adjustment value
1 scale / 2 (When the set value is changed by 2, shift is made by 1
scale.)
Perform this adjustment if there is a considerable difference in color
shift in the square and at the center area.
Select adjustment item (OFF SET X F / OFF SET X R / OFF SET X
S) and change adjustment value.
OFF SET X F:
F side main scanning direction registration offset set value (The
color shift on the F side and at the center area is changed.)
OFF SET X R:
R side main scanning direction registration offset set value (The
color shift on the R side and at the center area is changed.)
OFF SET X S:
Sub scanning direction registration offset set value (The overall
color shift toward sub scanning direction overall.)
1 scale / 2 (When the set value is changed by 2, shift is made by 1
scale.)
Perform this adjustment if there is a considerable difference in color
shift in the square and at the center area.
Select adjustment item (OFF SET X F / OFF SET X R / OFF SET X
S) and change adjustment value.
OFF SET X F:
F side main scanning direction registration offset set value (The
color shift on the F side and at the center area is changed.)
OFF SET X R:
R side main scanning direction registration offset set value (The
color shift on the R side and at the center area is changed.)
OFF SET X S:
Sub scanning direction registration offset set value (The overall
color shift toward sub scanning direction overall.)
Adjustment conditions and method
To adjust evenly overall, adjust so that the color shifts on the F side,
the R aide and at the center are of the same level.
To adjust with the center area most focused, adjust so that the color
shift at the center becomes smaller than that on the F side and the
R side.
When the offset adjustment value is 0, if the color registration
adjustment (automatic adjustment) is performed, the color shift on
the F side and that on the R side are automatically adjusted to be
smaller than that on the center area.
To adjust evenly overall, adjust so that the color shifts on the F side,
the R aide and at the center are of the same level.
To adjust with the center area most focused, adjust so that the color
shift at the center becomes smaller than that on the F side and the
R side.
When the offset adjustment value is 0, if the color registration
adjustment (automatic adjustment) is performed, the color shift on
the F side and that on the R side are automatically adjusted to be
smaller than that on the center area.
Display/Item
Content
Adjust
ment
value
range
Default
value
A
CYAN
(FRONT)
(FRONT)
Image registration adjustment
Value (Main scanning
direction) (Cyan) (F side)
Value (Main scanning
direction) (Cyan) (F side)
1 - 399
200
B
CYAN
(REAR)
(REAR)
Image registration adjustment
value (Main scanning
direction) (Cyan) (R side)
value (Main scanning
direction) (Cyan) (R side)
1 - 399
200
C
MAGENTA
(FRONT)
(FRONT)
Image registration adjustment
value (Main scanning
direction) (Magenta) (F side)
value (Main scanning
direction) (Magenta) (F side)
1 - 399
200
D
MAGENTA
(REAR)
(REAR)
Image registration adjustment
value (Main scanning
direction) (Magenta) (R side)
value (Main scanning
direction) (Magenta) (R side)
1 - 399
200
E
YELLOW
(FRONT)
(FRONT)
Image registration adjustment
value (Main scanning
direction) (Yellow) (F side)
value (Main scanning
direction) (Yellow) (F side)
1 - 399
200
F
YELLOW
(REAR)
(REAR)
Image registration adjustment
value (Main scanning
direction) (Yellow) (R side)
value (Main scanning
direction) (Yellow) (R side)
1 - 399
200
G
CYAN
(SUB)
(SUB)
Image registration adjustment
value (Sub scanning
direction) (Cyan)
value (Sub scanning
direction) (Cyan)
1 - 399
200
H
MAGENTA
(SUB)
(SUB)
Image registration adjustment
value (Sub scanning
direction) (Magenta)
value (Sub scanning
direction) (Magenta)
1 - 399
200
I
YELLOW
(SUB)
(SUB)
Image registration adjustment
value (Sub scanning
direction) (Yellow)
value (Sub scanning
direction) (Yellow)
1 - 399
200
J
OFFSET_
C_MAIN_F
C_MAIN_F
Image registration offset
adjustment value (Main
scanning direction) (Cyan) (F
side)
adjustment value (Main
scanning direction) (Cyan) (F
side)
1 - 99
50
K
OFFSET_
C_MAIN_R
C_MAIN_R
Image registration offset
adjustment value (Main
scanning direction) (Cyan) (R
side)
adjustment value (Main
scanning direction) (Cyan) (R
side)
1 - 99
50
L
OFFSET_
M_MAIN_F
M_MAIN_F
Image registration offset
adjustment value (Main
scanning direction) (Magenta)
(F side)
adjustment value (Main
scanning direction) (Magenta)
(F side)
1 - 99
50
M
OFFSET_
M_MAIN_R
M_MAIN_R
Image registration offset
adjustment value (Main
scanning direction) (Magenta)
(R side)
adjustment value (Main
scanning direction) (Magenta)
(R side)
1 - 99
50
N
OFFSET_
Y_MAIN_F
Y_MAIN_F
Image registration offset
adjustment value (Main
scanning direction) (Yellow)
(F side)
adjustment value (Main
scanning direction) (Yellow)
(F side)
1 - 99
50
O
OFFSET_
Y_MAIN_R
Y_MAIN_R
Image registration offset
adjustment value (Main
scanning direction) (Yellow)
(R side)
adjustment value (Main
scanning direction) (Yellow)
(R side)
1 - 99
50
P
OFFSET_
C_SUB
C_SUB
Image registration offset
adjustment value (Sub
scanning direction) (Cyan)
adjustment value (Sub
scanning direction) (Cyan)
1 - 99
51
Q
OFFSET_
M_SUB
M_SUB
Image registration offset
adjustment value (Sub
scanning direction) (Magenta)
adjustment value (Sub
scanning direction) (Magenta)
1 - 99
51
R
OFFSET_
Y_SUB
Y_SUB
Image registration offset
adjustment value (Sub
scanning direction) (Yellow)
adjustment value (Sub
scanning direction) (Yellow)
1 - 99
51
S
OFFSET_
C_SUB_HV12
C_SUB_HV12
Image registration offset
adjustment value (Sub
scanning direction) (Cyan)
(Heavy paper 1/2)
adjustment value (Sub
scanning direction) (Cyan)
(Heavy paper 1/2)
1 - 99
50
T
OFFSET_
M_SUB_HV12
M_SUB_HV12
Image registration offset
adjustment value (Sub
scanning direction) (Magenta)
(Heavy paper 1/2)
adjustment value (Sub
scanning direction) (Magenta)
(Heavy paper 1/2)
1 - 99
50
U
OFFSET_
Y_SUB_HV12
Y_SUB_HV12
Image registration offset
adjustment value (Sub
scanning direction) (Yellow)
(Heavy paper 1/2)
adjustment value (Sub
scanning direction) (Yellow)
(Heavy paper 1/2)
1 - 99
50
V
OFFSET_
C_SUB_HV34
C_SUB_HV34
Image registration offset
adjustment value (Sub
scanning direction) (Cyan)
(Heavy paper 3/4)
adjustment value (Sub
scanning direction) (Cyan)
(Heavy paper 3/4)
1 - 99
50
W OFFSET_
M_SUB_HV34
Image registration offset
adjustment value (Sub
scanning direction) (Magenta)
(Heavy paper 3/4)
adjustment value (Sub
scanning direction) (Magenta)
(Heavy paper 3/4)
1 - 99
50
X
OFFSET_
Y_SUB_HV34
Y_SUB_HV34
Image registration offset
adjustment value (Sub
scanning direction) (Yellow)
(Heavy paper 3/4)
adjustment value (Sub
scanning direction) (Yellow)
(Heavy paper 3/4)
1 - 99
50
Display/Item
Content
Adjust
ment
value
range
Default
value
MX-4070V ADJUSTMENTS AND SETTINGS 5 – 13
ADJ 6
Scan image distortion
adjustment
(Document table mode)
adjustment
(Document table mode)
This adjustment must be performed in the following cases:
• When the scanner (reading) section is disassembled.
• When the copy image is distorted.
• When the scanner (reading) section is disassembled.
• When the copy image is distorted.
6-A
Scanner (reading) unit parallelism
adjustment (Sub scanning direction
distortion adjustment)
adjustment (Sub scanning direction
distortion adjustment)
Before execution of this adjustment, remove the document table
glass.
1) Remove the lamp unit, and then loosen the screws which are
glass.
1) Remove the lamp unit, and then loosen the screws which are
fixing the scanner unit and the drive wire. Release the scanner
unit from the drive wire.
unit from the drive wire.
2) Turn the scanner drive pulley manually and shift the 2/3 mirror
unit to bring it into contact with the stopper.
When the 2/3 mirror unit is in contact with the two stoppers on
the front and the rear frames simultaneously, the parallelism is
proper.
When the 2/3 mirror unit is in contact with the two stoppers on
the front and the rear frames simultaneously, the parallelism is
proper.
If this requirement is not met, do the following steps.
3)
Loosen the fixing screw of the pulley angle on the front frame
side of the 2/3 mirror unit.
side of the 2/3 mirror unit.
4)
Adjust the position of the pulley angle on the front frame side
of the 2/3 mirror unit so that it is in contact with two stoppers on
the front and the rear frames simultaneously.
of the 2/3 mirror unit so that it is in contact with two stoppers on
the front and the rear frames simultaneously.
5)
Screw edge face of scanner unit and right edge face of the
frame together on both sides to fix the scanner unit while this
unit is in contact with both stoppers.
frame together on both sides to fix the scanner unit while this
unit is in contact with both stoppers.
6-B
Scan image (main scanning direction)
distortion adjustment
distortion adjustment
1)
Make a test chart on A3 (11" x 17") paper as shown below.
(Draw a rectangular with four right angles.)
(Draw a rectangular with four right angles.)
L
L
L = 10mm
L
L
MX-4070V ADJUSTMENTS AND SETTINGS 5 – 14
2) Set the test chart prepared in the procedure 1) on the docu-
ment table and make a copy on A3 (11" x 17") paper.
3) Check for distortion in the main scanning direction.
If the four angles of the rectangle of the copy image are right
angles, it is judged that there is no distortion. (The work is
completed.)
angles, it is judged that there is no distortion. (The work is
completed.)
If there is any distortion in the main scanning direction, perform
the following procedure.
the following procedure.
4) Check the difference (distortion balance) between left-hand
and right-hand side images distortions.
If Lc = Ld, the distortion on the left is equal to that on the right.
(The distortions are balanced.)
If the above condition is satisfied, go to the procedure 6).
If not, perform the following procedures.
(The distortions are balanced.)
If the above condition is satisfied, go to the procedure 6).
If not, perform the following procedures.
5) Change the height balance of the scanner rail on the front
frame side.
Remove the left cover of the operation panel. Loosen the scan-
ner rail fixing screw to change the balance between the right
and the left heights of the scanner rail.
ner rail fixing screw to change the balance between the right
and the left heights of the scanner rail.
Repeat the procedures 2) - 5) until there is no difference in
image distortions (distortion balance) between both sides.
image distortions (distortion balance) between both sides.
6)
Without changing the balance of the scanner rail on the front
frame side, change the overall height.
frame side, change the overall height.
7)
Set the test chart prepared in the procedure 1) on the docu-
ment table, and make a copy on A3 (11" x 17") paper. Check
that the distortion in the main scanning direction is within the
specified range.
Repeat the procedures 6) and 7) until the distortion in the main
scanning direction is in the specified range.
ment table, and make a copy on A3 (11" x 17") paper. Check
that the distortion in the main scanning direction is within the
specified range.
Repeat the procedures 6) and 7) until the distortion in the main
scanning direction is in the specified range.
ADJ 7
Scanner image skew
adjustment (DSPF/RSPF mode)
adjustment (DSPF/RSPF mode)
7-A
RSPF scanner image skew adjustment
This adjustment must be performed in the following cases:
• The RSPF section has been disassembled.
• The RSPF unit has been replaced
• The RSPF unit generates skewed scanned images.
1)
• The RSPF section has been disassembled.
• The RSPF unit has been replaced
• The RSPF unit generates skewed scanned images.
1)
Create an adjustment chart by printing the self print pattern
(grid pattern) available in Simulation 64-2 in duplex mode.
SIM 64-2 set values
A = 1, B = 1, C = 254, D = 255
Make sure that the print grid pattern is almost in parallel with
the paper edges, and apply position marks 'A' and 'B' to the
front and rear side of leading edge on front side of the paper.
(grid pattern) available in Simulation 64-2 in duplex mode.
SIM 64-2 set values
A = 1, B = 1, C = 254, D = 255
Make sure that the print grid pattern is almost in parallel with
the paper edges, and apply position marks 'A' and 'B' to the
front and rear side of leading edge on front side of the paper.
2)
Copy the adjustment chart (created in step 1) to A3 (11" x 17")
paper in RSPF duplex mode, and then check the image for
skews (Set in the RSPF feed tray so that the mark on the
adjustment chart is at the edge).
• Check with one of the following methods.
paper in RSPF duplex mode, and then check the image for
skews (Set in the RSPF feed tray so that the mark on the
adjustment chart is at the edge).
• Check with one of the following methods.
Check Method 1
Lc
Ld
Copy A
Lc
Ld
Copy B
There is no difference
between the distortion on
the right and that on the
left.
Lc = Ld
There are some differences
between the distortion on
the right and that on the
left.
/F/G
A
B
Paper feed direction
A
B
a
b
(Front side)
Make sure that the output satisfies the condition:
_DE_PP
_DE_PP
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