Sharp MX-M232D (serv.man3) Service Manual ▷ View online
MX-M182 ADJUSTMENT 6-6
(3) Main scanning direction (FR direction) distortion
adjustment
This adjustment must be performed in the following cases:
• When the mirror base drive wire is replaced.
• When the lamp unit, or No. 2/3 mirror holder is replaced.
• When the lamp unit, or No. 2/3 mirror holder is replaced.
• When a copy as shown is made.
1) Set A3 (11" x 17") white paper on the original table as shown below.
2) Open the original cover and make a normal (100%) copy.
3) Measure the width of the black background at the lead edge and at
the rear edge.
If the width (La) of the black background at the lead edge is equal that
(Lb) at the rear edge, there is no need to execute the following
(Lb) at the rear edge, there is no need to execute the following
procedures of 4) - 7).
4) Loosen the mirror base drive pulley fixing screw on the front frame
side or on the rear frame side.
5) Tighten the mirror base drive pulley fixing screw.
<Adjustment specification>
La = Lb
6) Execute the main scanning direction (FR) distortion balance
adjustment previously described in 2) again.
(4) Sub scanning direction (scanning direction) distortion
adjustment
When there is no skew copy in the mirror base scanning direction and
there is no horizontal error (right angle to the scanning direction), the
adjustment can be made by adjusting the No. 2/3 mirror base unit rail
height.
height.
Before performing this adjustment, be sure to perform the horizontal
image distortion adjustment in the laser scanner section.
This adjustment must be performed in the following cases:
This adjustment must be performed in the following cases:
•When the mirror base wire is replaced.
•When the copy lamp unit or No. 2/3 mirror unit is replaced.
•When the mirror unit rail is replaced or moved.
•When the mirror unit rail is replaced or moved.
•When a following copy is made.
Lb
La
Original
Copy
Paper exit
direction
direction
Fit the paper edge and
the glass holding plate edge.
the glass holding plate edge.
A3 (11" x 17") white paper
Glass holding plate
Allow a little space.
Paper exit direction
La: Lead edge black background width
Lb: Rear edge black background width
Lb: Rear edge black background width
A
B
Rear side
Front side
When La < Lb
Turn the mirror base drive pulley on the front frame side in the
arrow direction A.
(Do not move the mirror base drive pulley shaft.)
arrow direction A.
(Do not move the mirror base drive pulley shaft.)
When La > Lb
Turn the mirror base drive pulley on the rear frame side in the
arrow direction A.
(Do not move the mirror base drive pulley shaft.)
arrow direction A.
(Do not move the mirror base drive pulley shaft.)
Original
Copy A
Copy B
MX-M182 ADJUSTMENT 6-7
1) Making of a test sheet
Make test sheet by drawing parallel lines at 10mm from the both
ends of A3 (11" x 17") white paper as shown below. (These lines
must be correctly parallel to each other.)
2) Make a normal (100%) copy of the test sheet on A3 (11" x 17")
paper. (Fit the paper edge with the glass holding plate edge.)
3) Measure the distances (La, Lb, Lc, Ld) at the four corners as shown
below.
When La = Lb and Lc = Ld, no need to perform the procedures 4) and 5).
4) Move the mirror base F rail position up and down (in the arrow
direction) to adjust.
Note: Do not adjust the rail on the rear side.
If the rail on the rear side is adjusted, an error may occur.
Only the rail on the front side can be adjusted.
Only the rail on the front side can be adjusted.
<Adjustment specification>
La = Lb, Lc = Ld
5) After completion of adjustment, manually turn the mirror base drive
pulley, scan the mirror base A and mirror base B fully, and check that
the mirror bases are not in contact with each other.
*
If the mirror base rail is adjusted to extreme, the mirror base may
contact the frame or original glass. Be careful to avoid this.
(5) Main scanning direction (FR direction) magnification
ratio adjustment (SIM 48-1)
Note:Before performing this adjustment, be sure to check that the CCD
unit is properly installed.
1) Put a scale on the original table as shown below.
2) Execute SIM 48-1.
3) After completion of warming up, shading is operated and the current
correction value of the main scanning direction magnification ratio is
displayed on the screen.
displayed on the screen.
4) Enter the set values of the items of F and R, and press [START] key.
The correction values are saved and a copy is made.
10mm
10mm
10mm
10mm
Parallel line
White paper
Parallel line
La
Lb
Ld
Lc
Paper exit
direction
direction
When La > Lb
Shift the mirror base B rail upward by the half of the
difference of La - Lb.
Shift the mirror base B rail upward by the half of the
difference of La - Lb.
When La < Lb
Shift the mirror base B rail downward by the half of the
difference of Lb - La.
Example: When La = 12mm and Lb = 9mm, shift the mirror
Shift the mirror base B rail downward by the half of the
difference of Lb - La.
Example: When La = 12mm and Lb = 9mm, shift the mirror
base B rail upward by 1.5mm.
When Lc > Ld
Shift the mirror base B rail downward by the half of the
difference of Lc - Ld.
Shift the mirror base B rail downward by the half of the
difference of Lc - Ld.
When Lc < Ld
Shift the mirror base B rail downward by the half of the
difference of Ld - Lc.
Shift the mirror base B rail downward by the half of the
difference of Ld - Lc.
When moving the mirror base rail, hold the mirror base rail
with your hand.
with your hand.
Sim48-1 COPY MAG.
1:F-R
2:SCAN
2:SCAN
[ 1- 99]
50
50
50
MX-M182 ADJUSTMENT 6-8
<Adjustment specification>
Note: A judgment must be made with 200mm width, and must not be
made with 100mm width.
(6) Sub scanning direction (scanning direction)
magnification ratio adjustment (SIM 48-1, SIM 48-5)
a. OC mode in copying (SIM48-1)
Note: Before performing this adjustment, be sure to check that the CCD
unit is properly installed.
1) Put a scale on the original table as shown below, and make a normal
(100%) copy.
2) Compare the scale image and the actual image. If necessary,
perform the following adjustment procedures.
3) Execute SIM 48-1.
4) After completion of warming up, shading is operated and the current
correction value of the sub scanning direction magnification ratio is
displayed on the screen.
5) Select [2.SCAN] mode with the cross cursor.
6) Enter the set value and press the start key.
The set value is stored and a copy is made.
<Adjustment specification>
b. RSPF sub scanning direction magnification ratio (SIM48-5)
Note:
•Before performing this adjustment, be sure to check that the CCD unit is
properly installed.
•Before performing this adjustment, the OC mode adjustment in copying
must be completed.
1) Put a scale on the original table as shown below, and make a normal
(100%) copy to make a test chart.
Note:Since the printed copy is used as a test chart, put the scale in
parallel with the edge lines.
2) Set the test chart on the SPF and make a normal (100%) copy.
3) Compare the scale image and the actual image. If necessary,
perform the following adjustment procedures.
4) Execute SIM 48-5.
5) After warm-up, shading is performed.
6) Check to confirm that the RSPF (SIDE1) mode is selected with the
6) Check to confirm that the RSPF (SIDE1) mode is selected with the
cross cursor.
7) Enter the set value and press the start key.
The set value is stored and a copy is made.
<Adjustment specification>
* "RSPF (SIDE2)" is displayed only when the RSPF is installed.
(7) Off center adjustment (SIM 50-12)
a. OC mode (SIM50-12)
1) Make a test chart as shown below and set it so that its center line is
fit with the original guide center mark.
* To make a test chart, draw a line on A3 or 11" x 17" paper at the center
in the paper transport direction.
2) Make a normal copy from the manual paper feed tray, and compare
the copy and the test chart.
If necessary, perform the following adjustment procedures.
3) Execute SIM 50-12.
Adjustment mode
SIM
Display
text array
Set
value
Specifi-
cations
Set
range
Main scanning
direction magnifi-
cation ratio
direction magnifi-
cation ratio
48-1
F-R
+1
+0.1%
-1
-1
0.1%
Normal ±
1.0%
1 - 99
Adjustment mode
SIM
Display
text array
Set
value
Specifi-
cations
Set
range
Sub scanning
direction
magnification ratio
OC mode
direction
magnification ratio
OC mode
48-1
SCAN
+1
+0.1%
-1
-1
0.1%
Normal ±
1.0%
1 - 99
Sim48-1 COPY MAG.
1:F-R
2:SCAN
2:SCAN
[ 1- 99]
50
50
50
Sim48-1 COPY MAG.
1:F-R
2:SCAN
2:SCAN
[ 1- 99]
50
50
50
Adjustment mode
SIM
Display
text array
Set
value
Specifi-
cations
Set
range
Sub scanning
direction
magnification
ratio
(Front surface)
direction
magnification
ratio
(Front surface)
48-5
RSPF
(SIDE1)
+1
+0.1%
-1
-1
0.1%
Normal ±
1.0%
1 - 99
Sub scanning
direction
magnification
ratio
(Back surface)
direction
magnification
ratio
(Back surface)
RSPF
(SIDE2)
Sim48-5 (R)SPF ZOOM
1:RSPF(SIDE1)
2:RSPF(SIDE2)
2:RSPF(SIDE2)
[ 1- 99]
50
50
50
Center
Original guide
Copy paper
(A3 or 17" x 11")
(A3 or 17" x 11")
MX-M182 ADJUSTMENT 6-9
4) After completion of warming up, shading is performed and the
current off-center adjustment value is displayed on the LCD.
5) Enter the set value and press the start key.
The set value is stored and a copy is made.
<Adjustment specification>
C. Image density adjustment
(1) Copy mode (SIM 46-2)
1) Set a test chart (UKOG-0162FCZZ) on the OC table as shown
below.
2) Put several sheets of A3 or 11" x 17" white paper on the test chart.
3) Execute SIM 46-2.
3) Execute SIM 46-2.
4) After completion of warming up, shading is performed, and the
current density level is displayed on the LCD.
Use the cross cursor to select a mode.
5) Change the set value with the 10-key to adjust the copy image
density.
6) Make a copy and check that the specification below is satisfied.
<Adjustment specification>
Adjustment
mode
SIM
Display
text array
Set value
Specifi-
cations
Set
range
Document off-
center (OC
mode)
center (OC
mode)
50-12
OC
+1
Shifted to R
side by
+0.mm.
-1
side by
+0.mm.
-1
Shifted to L
side by
0.1mm.
side by
0.1mm.
Center ±
2.0%
1 - 99
Sim50-12 ORG. CENTER
1:OC
2:SPF(SIDE1)
3:SPF(SIDE2)
2:SPF(SIDE1)
3:SPF(SIDE2)
[ 1- 99]
50
50
50
50
50
Density
mode
Display
text
array
Expo-
sure
level
level
Sharp Gray
Chart output
Set value
Set
range
Auto-
matic
matic
AE
-
"2" is slightly
copied.
copied.
The greater the set
value is, the darker
the density is.
The smaller the set
value is, the lighter
the density is.
value is, the darker
the density is.
The smaller the set
value is, the lighter
the density is.
1 - 99
Text
TEXT
3
"3" is slightly
copied.
copied.
Photo
(Error
diffu-
sion)
(Error
diffu-
sion)
PHOTO
1
1
3
"2" is slightly
copied.
copied.
Photo
(Dither)
(Dither)
PHOTO
2
2
3
"2" is slightly
copied.
copied.
Toner
save
(Text)
save
(Text)
TEXT
(TS)
(TS)
3
"3" is slightly
copied.
copied.
Toner
save
(Auto-
matic)
save
(Auto-
matic)
AE(TS)
-
"2" is slightly
copied.
copied.
UKOG-0162FCZZ
Sim46-1 EXP LEVEL
1:AE
2:TEXT
3:PHOTO 1
1/2 [ 1- 99]
2:TEXT
3:PHOTO 1
1/2 [ 1- 99]
50
50
50
50
50
Sim46-1 EXP LEVEL
4:PHOTO 2
5:TEXT(TS)
6:AE(TS)
2/2 [ 1- 99]
5:TEXT(TS)
6:AE(TS)
2/2 [ 1- 99]
50
50
50
50
50
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