Sharp Mx 2310u Owners Manual

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 15
7) Press [OK] key.
The adjustment result becomes valid.
 
4-D Copy mode image lead edge position, 
image loss, void area, image off-center, sub 
scanning direction image magnification 
ratio automatic adjustment (Scanner) 
(RSPF mode)
1) Enter the SIM50-28 mode.
2) Press the [SPF ADJ] key.
3) Proceed to one of the three screens for selecting the cassette
used to print RSPF adjustment patterns by selecting the corre-
sponding button:
SIDE1: RSPF adjustment for the front side
SIDE2: RSPF adjustment for the back side
ALL: RSPF adjustment for both the front and back sides
4) Select one of the cassettes that can be used to print RSPF adjustment patterns. (Multiple selection is not allowed.)
5) Press the [EXECUTE] key, and the machine starts self-print of RSPF adjustment patterns.
* The screen shows a message indicating that the machine is
self-printing RSPF adjustment patterns.
When self-print finishes,  the next screen appears where you
can start RSPF adjustments. 6) RSPF adjustment patterns are loaded into the RSPF. 
(Set so that the pattern surface faces up.)
* By pressing the [REPRINT] key, you can return to the cas-sette selection screen and have the machine self-print
RSPF adjustment patterns again.
7) Press the [EXECUTE] key, and the machine starts reading RSPF adjustment patterns (for the front side).
* The screen shows a message indicating that the machine isreading and calculating RSPF adjustment patterns (for the
front side).
The machine starts calculating the adjustment amount (for
the front side) after it has read the patterns for the front side.
After the machine has finis hed calculating the adjustment
amount for the front side, the next screen appears where
you can have the machine start reading RSPF adjustment
patterns (for the back side).
Adjustment Item List
• RSPF original leading edge adjustment (front side)
• RSPF original off-center adjustment (front side)
• RSPF original sub-scan  magnification adjustment 
(front side)
8) RSPF adjustment patterns are loaded into the RSPF.  (Set so that the pattern surface faces down.)
* By pressing the [REPRINT] key, you can return to the cas-
sette selection screen and have the machine self-print
RSPF adjustment patterns again.


						

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 16
9) Press the [EXECUTE] key, and the machine starts loading
RSPF adjustment patterns (for the back side).
* The screen shows a message indicating that the machine isreading RSPF adjustment patterns (for the back side).
The machine starts calculating the adjustment amount (for
the back side) after it has read the patterns for the back side.
After the machine has finished calculating the adjustment
amount for the back side, the next screen appears where
you can view the results of the adjustments.

• RSPF original leading edge adjustment (back side)
• RSPF original off-center adjustment (back side)
• RSPF original sub-scan magnification adjustment  (back side)
10) The adjustment result screen appears. This screen shows the current  values along with the previous
values in parentheses.
* By pressing the [REPRINT] key, you can return to the cas- sette selection screen and have the machine self-print
RSPF adjustment patterns (for the front and back sides)
again.
* To have the machine start re-reading the RSPF adjustment patterns (front and back sides), press the [RESCAN] key.
* To return to the top menu without saving the adjustment val- ues into EEPROM and RAM, press the [RETRY] key.
* To display the data used for adjustment, press the [DATA] key.
11) To save the adjustment values into EEPROM and RAM and return to the top menu, press the [OK] key.
* To return to the result screen, press the [BACK] key.
 
ADJ 5Print engine image distortion 
adjustment / OPC drum phase 
adjustment / Color registration 
adjustment 
(Print engine section)
This adjustment must be performed in the following cases:
* When the color shift occurs.
* When the LSU is replaced.
* When the LSU is removed from the main unit.
* When the unit is installed or w hen the installing place is changed.
* When maintenance work is performed. (Replacement of the OPC drum, the OPC cartridge, the transfer unit, the transfer belt,
etc.)
* When [ADJ 4A] / [ADJ 16A] Print engine image magnification ratio adjustment (BK) (main sc anning direction) is performed.
* U2 trouble has occurred.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
* When the color phase is not proper even after execution of the color balance adjustment.
* When the OPC drum drive section is disassembled.
* When the primary transfer unit is  replaced. (when it is removed
from the machine)
* When the developing unit or the OP C drum unit is removed from
the machine.
 
5-A Print engine image distortion adjustment 
(Manual adjustment) / OPC drum phase 
adjustment (Automat ic adjustment) / 
Color registration adjustment 
(Automatic adjustment)
This adjustment performs the pr int engine image distortion adjust-
ment, the OPC drum phase adjustment, and the color registration
adjustment simultaneously.
1) Enter SIM50-22 mode.
2) Press [EXECUTE] key.
[EXECUTE] key is highlighted and  the image registration auto-
matic adjustment is started. (It takes about 15 sec to complete
the adjustment.)
3) When the adjustment is completed, [EXECUTE] key returns to the normal display, and the value of the adjustment result is
displayed.
The current skew level for each color is displayed on the
SKEW display section.
EXECUTE


						

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 17
4) Write down the displayed skew level.
Meaning of the skew level value and the adjustment pro-
cedure
* If OK is displayed for all items of SKEW ALL_ROTATE, C, M, and Y, there is no need to perform the adjustment.
* When R is displayed at the head of the value, turn the LSU  skew adjustment screw clockwise.
* When L is displayed at the head of the value, turn the LSU  skew adjustment screw counterclockwise.
* The turning amount of the adjustment screw corresponds to  each adjustment value. ALL_ROTATE indicates the
number of rotations, and C, M, and Y indicate numbers of
clicks.
The display value is rounded at the decimal point.
* ALL_ROTATES shows the number of rotations of adjustments for all the adjustment screws. C, M, and Y
(SKEW) shows the number of adjustment click steps for
each adjustment screw of C, M, and Y.
Contents in (    )
MIAN, SUB: Difference from t he previous adjustment value of
image registration.
Example: If 105 for this time and 103 for the previous time, 
it is displayed as 105.0 (+2.0).
SKEW, ALL_ROTATE: Judgment of the LSU skew adjustment
result. OK or NG.
PHASE: OPC drum phase adjustment value of the previous
time 5) If the display of ALL_ROTATE is NG, turn all the LSU skew
adjustment screws to adjust, and  perform the procedures 2) to
4).
Repeat the procedures 2) to 5) until the display of
ALL_ROTATE becomes OK. If the display of ALL_ROTATE is
OK, go to the procedure 6).
For the adjustment, remove the front cover and the waste
toner box, and turn the skew adjustment screw.
Display/
Item Content
Display Default NOTE
MAIN F C Registration adjustment value main scanning  direction (Cyan laser writing position F side) 1.0 - 199.0 100
M Registration adjustment value main scanning  direction (Magenta laser writing position F side) 1.0 - 199.0 100
Y Registration adjustment value main scanning  direction (Yellow laser writing position F side) 1.0 - 199.0 100
MAIN R C Registration adjustment value main scanning  direction (Cyan laser writing position R side) 1.0 - 199.0 100
M Registration adjustment value main scanning  direction (Magenta laser writing position R side) 1.0 - 199.0 100
Y Registration adjustment value main scanning  direction (Yellow laser writing position R side) 1.0 - 199.0 100
SUB C Registration adjustment value sub scanning direction  (Cyan drum  Black drum) 1.0 - 199.0 100
M Registration adjustment value sub scanning direction  (Magenta drum   Black drum) 1.0 - 199.0 100
Y Registration adjustment value sub scanning direction  (Yellow drum   Black drum) 1.0 - 199.0 100
SKEW C Print skew amount calculation result (Cyan) -99.9 - 99.9 0 If the value is positive (+), L is  displayed at the head of the 
value. If negative (–), R is displayed.
If the value is in the range of –2.1 - +2.1, (OK) is displayed at 
the bottom of the value. In the other cases, (NG) is displayed.
M Print skew amount calculation result (Magenta) -99.9 - 99.9 0
Y Print skew amount calculation result (Yellow) -99.9 - 99.9 0
ALL_
ROTATE Print skew amount calculation result (Overall)
-99.9 - 99.9 0 If the value is positive (+), L is displayed at the head of the 
value. If negative (–), R is displayed.
If the value is in the range of –1.6 - +1.6, (OK) is displayed at 
the bottom of the value. In the other cases, (NG) is displayed.
PHASE OPC drum phase adjustment value 1 - 8 1 
						

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 18
6) Repeat the procedures 2) to 4) again, and check to confirm
that C, M, and Y (SKEW) are OK.
If any of them is NG, turn the LSU skew adjustment screw of
the corresponding color to adjust.
When the adjustment is made by  turning the LSU skew adjustment
screw of K, the states of C, M and Y (SKEW) are changed. Execute
SIM50-22 to check to confirm that C, M, and Y (SKEW) are OK.
When an abnormality occurs , ERROR is displayed.
In this case, check each drive section and the process section.
The adjustment result can be checked by the following manual
adjustment mode.
*ADJ 5B Image skew adjustment (Manual adjustment) (SIM50-20)
*ADJ 5C Color registration offset adjustment (SIM50-20)
When the color registration is greatly shifted due to replacement of
the LSU, etc, if SIM50-22 is used to perform the color registration
automatic adjustment, an error may occur.
In this case, the adjustment may be properly executed by setting
the adjustment items A - I of SIM50-20 to 100 and executing the
automatic adjustment again.
If color shift in an actual print image differs in the center, the front
side, and the rear side, the color shift offset adjustment can
improve it. (Refer to ADJ 5C.)
Normally there is a difference in color shift in several dots. Perform
the adjustment only when the adjustment is required.
 
5-B Print engine image skew (LSU skew) 
adjustment (Ma nual adjustment) 
(No need to adjust normally)
If a more accurate adjustment than the automatic adjustment ADJ
5A is required, use this method of adjustment.
This adjustment is made by changing the parallelism of the LSU
unit scan laser beams for the OPC drum.
1) Enter the SIM 50-20 or 64-01 mode.
2) Select the paper feed tray with A3 (11 x 17) paper in it, and
press [EXECUTE] key.
3) The image skew (image registration) adjustment pattern is printed. 4) Check the printed black image for any skew.
Use the four cross points printed in black to measure the
squareness.
There are following two methods of checking the black image
for any skew (right angle).
Method 1
Measure the distances between opposing corners of the rect-
angle print pattern, and compare the two distances to check
the squareness.
Method 2
Check the squareness of the ve rtical and horizontal sides of
the rectangle print pattern by using A3 or 11 x 17 paper
sides.
In the case of Method 2, the right angle of paper to be used
may not be exact. Be sure to check the right angle of paper to
be used in advance.
Method 1
Measure the length of the diagonal lines of the rectangle print
pattern.
Calculate the difference between the measured lengths C and
D of the diagonal lines.
Check to insure that the difference between C and D is in the
following range.
C - D = 0.8mm
If the difference between C and D is in the above range, there
is no need to adjust.
Method 2
Fit the side of A3 or 11 x 17 paper to the long side of the rect-
angle print pattern.
Measure the slant (skew) of the vertical side for the horizontal
side of paper as shown in the figure.
If the above distance is 0.5mm or less, there is no need to
adjust.
If the above condition is not satisfied, perform the following
procedure.
AB
About 220mm
About 300mm
Diagonal
line D
Diagonal
line C 
						

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 19
5) Open the front cover, remove the waste toner box, and turn the
four LSU image skew adjustment screws in the same direction
by the same amount. 
For the adjustment, remove the front cover and the waste
toner box, and turn the skew adjustment screw.
(Skew adjustment screw rotation direction)
When C is greater than D in the method 1 or there is some
skew in the direction A in the method 2, turn the screw clock-
wise.
When C is smaller than D in the method 1 or there is some
skew in the direction B in the method 2, turn the screw coun-
terclockwise.
(Reference of the rotation amount of the skew adjustment
screw)
In case of the method 1, 0.8mm/about 1.5 rotations
In case of the method 2, 0.5mm/about 1.5 rotations
Repeat the procedures 2) to 6).
After completion of the black image skew adjustment, go to the
procedure 7).
6) Perform the same procedures as 1) and 2).
7) Check the printed color image for any skew. If the difference between the shift amounts on the F and R
sides is within   1 scale of the fine adjustment check scale,
there is no need to perform the adjustment.
Measure the skew amount from the print patterns on the front
and rear sides of each color. In each Y/M/C color print pattern printed separately in the F
side and in the R side, note the same print color pattern and
check to confirm that the F side and the R side are in the same
condition.
Rough adjustment pattern check:
Check the sub scan rough adjustm
ent color image shift check
section on the R side and the F side of each color, use the cen-
ter position of the black scale as the reference, and check the
balance in shifts of the color im age line positions in the positive
and the negative directions. The balance in the R side must be
the same as that in the F side.
Fine adjustment pattern check:
Check the square frames on t he R side and the F side of each
color. (Normally five sections of high density can be seen.)
Check the sub scanning direction  position of the center area of
high density (one of the above five sections). These must be
on the same position on the R side and the F side.
In this case, use the sub scan direction color image shift check
scale (fine adjustment) as the reference.
Visually check the color density and make the darkest section
as the center, and use it as the read value of the shift amount.
Check that the difference in the  center position of the dark den-
sity section is within  1 step.
The positional relations of the front and the rear frame of the
print color patterns of a same color are compared. There is no
need that all the colors are in the same state. Compare only
the positional relations of color patterns of a same color.
If the above condition is not satisfied, perform the following
procedure.
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.
(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 adj ustment check scale) / Turn
for about 2 clicks.
Repeat the procedures 7) to 8) until a satisfactory result is
obtained.
R side
F side
A-sub
B-sub
A-main
B-mainColor image shift
check section
(Rough adjustment)
C (Image shift fine adjustment
reference frame)
Color image shift check
scale (Fine 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-3610N  ADJUSTMENTS AND SETTINGS  4 – 20
 
5-CColor registration offset adjustment 
(No need to adjust normally)
This adjustment is used to set  the offset value for the automatic
color registration adjustment (ADJ 5A).
If there is any difference in co lor phase at the center and the four
corners 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 eliminate color shifts in all the areas, but
average the overall color shifts.
After the automatic 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 properly made.
* ADJ 5A or ADJ 5B 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(REAR) They are manual adjustment va lues and automatic adjustment
values, and reflected when the automatic registration adjustment
is executed. It varies for every  operation of the automatic regis-
tration adjustment.
• Offset adjustment values: 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.
1) Enter SIM50-20 mode.
2) Select the paper feed tray with A3 (11 x 17) paper in it.
3) Press [EXECUTE] key. The color image registration check pattern is printed.
4) Check the color image registration. There are 6 color image registration patterns in total; two on
each of the F side, the R side, and the center. Check all the
patterns to confirm that they are within the specified range.
Also check to confirm that there  is not much shift in each color
image registration check pattern.
There are two kinds of adjustment: one in the main scanning
direction and the other in the sub scanning direction. The verti-
cal direction in the above figure is that in the main scanning
direction, and the horizontal dire ction is that in the sub scan-
ning 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 (ADJ
5A).
Check the print patterns of the rough adjustment and the fine
adjustment of 18 check patterns.
How to check the rough adjustment pattern and input of the
adjustment value:
Visually check the color image r
egistration check section, use the
center position of the black scal e 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.
(Reference adjustment value)
1 scale/10 (When the set value is changed by 10, shift is made by 1
scale.)
How to check the fine adjustment pattern and input of the
adjustment value:
Check to confirm that the darkest spot (one of 5 spots seen nor-
mally) is within the center area  of the image registration adjustment
reference frame in the square frame.
At that time, use the color image registration check scale (fine
adjustment) as the reference.
Visually check and consider the da rkest section of color density as
the center, and measure the shift from it.
Check to confirm that the center  of the dark density section is within
 1 step.
(If the fine adjustment print pattern is in the range of 0   1 for the
fine adjustment reference pattern scale, there is no need to adjust.)
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.
Rear pattern
Center pattern
Front pattern Reference arrow mark
A-sub
B-sub
B-main A-main
X1X2
Y2
Y1
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 Color image shift check
scale (Fine adjustment)
C (Image shift fine adjustment
reference frame) 
						

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 21
(Reference adjustment value)
1 scale/1 (When the set value is changed by 1, shift is made by 1
scale.)
If there is a considerable difference in color shift in the square and
at the center area, perform the adjustment.
Select an adjustment item (OFF SET X F / OFF SET X R / OFF
SET X S), and change the adjustment value to adjust.
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 D: R side main scanning di
rection 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
(Color is shifted to the sub scanning direction overall.)
When the adjustment value of OFF SET X F and OFF SET X R are
changed, the color at the center area will be affected. Consider this
when executing the adjustment.
(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.
 
ADJ 6Scan image distortion 
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.
 
6-A Scanner (reading) unit parallelism 
adjustment
Before execution of this adjustment, remove the document table
glass.
1) Remove the lamp unit, and then loosen the screws which are
fixing the scanner unit A and the drive wire. Release the scan-
ner unit A from the drive wire.
Display/Item ContentAdjustment 
value range Default 
value
ACYAN (FRONT) Image registration adjustment 
value (Main scanning 
direction) (Cyan) (F side) 1 - 199 100
BCYAN (REAR) Image registration adjustment 
value (Main scanning 
direction) (Cyan) (R side) 1 - 199 100
C MAGENTA (FRONT) Image registration adjustment 
value (Main scanning 
direction) (Magenta) (F side) 1 - 199 100
D MAGENTA (REAR) Image registration adjustment 
value (Main scanning 
direction) (Magenta) (R side) 1 - 199 100
E YELLOW (FRONT) Image registration adjustment 
value (Main scanning 
direction) (Yellow) (F side) 1 - 199 100
F YELLOW (REAR) Image registration adjustment 
value (Main scanning 
direction) (Yellow) (R side) 1 - 199 100
GCYAN (SUB) Image registration adjustment 
value (Sub scanning 
direction) (Cyan) 1 - 199 100
H MAGENTA (SUB) Image registration adjustment 
value (Sub scanning 
direction) (Magenta) 1 - 199 100
I YELLOW (SUB) Image registration adjustment 
value (Sub scanning 
direction) (Yellow) 1 - 199 100
J OFFSET  CF Image registration offset 
adjustment value (Main 
scanning direction) (Cyan) 
(F side) 1 - 199 100
K OFFSET  CR Image registration offset 
adjustment value (Main 
scanning direction) (Cyan) 
(R side) 1 - 199 100
L OFFSET 
MF Image registration offset 
adjustment value (Main 
scanning direction) (Magenta) 
(F side) 1 - 199 100
M OFFSET  MR Image registration offset 
adjustment value (Main 
scanning direction) (Magenta) 
(R side) 1 - 199 100
N OFFSET  YF Image registration offset 
adjustment value (Main 
scanning direction) (Yellow) 
(F side) 1 - 199 100
O OFFSET  YR Image registration offset 
adjustment value (Main 
scanning direction) (Yellow) 
(R side) 1 - 199 100
P OFFSET  CS Image registration offset 
adjustment value (Sub 
scanning direction) (Cyan) 1 - 199 100
Q OFFSET  MS Image registration offset 
adjustment value (Sub 
scanning direction) (Magenta) 1 - 199 100
R OFFSET  YS Image registration offset 
adjustment value (Sub 
scanning direction) (Yellow) 1 - 199 100
Display/Item Content
Adjustment 
value range Default 
value 
						

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 22
2) Turn the scanner drive pulley manually and shift the scanner
unit B to bring it into contact with the stopper.
When the scanner unit B 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 scanner unit B.
4) Adjust the position of the pulley angle on the front frame side of the scanner unit B so that it is in contact with two stoppers
on the front and the rear frames simultaneously.
5) Fix the pulley angle on the front frame side of the scanner unit B.
If a satisfactory result is  not obtained from the above proce-
dures, perform the following procedures.
Loosen the fixing screw of the sc anner unit drive pulley which
is not in contact.
Without moving the scanner unit drive shaft, turn the scanner
unit drive pulley manually and adjust so that the scanner unit B
is in contact with both stoppers on the front frame and the rear
frame simultaneously. (Change the relative position of the
scanner unit drive pulley and the drive shaft.) Fix the scanner
unit drive pulley fixing screw. 6) With the scanner unit B in cont
act with both stoppers, fit the
edge of the scanner unit A with the right edge of the frame, and
fix the scanner unit A  with the fixing screw.
 
6-BScan image (sub scanning direction) 
distortion adjustment
1) Make a test chart on A3 (11 x 17) paper as shown below.
(Draw a rectangular with four right angles.)
L
L
L = 10mm
L
L 
						

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 23
2) Set the test chart prepared in the procedure 1) on the docu-
ment table. (Shift the test chart edge 30mm from the reference
position as shown below.) With the document cover open,
make a copy on A3 (11 x 17) paper.
3) Check for distortion in the sub scanning direction. If La = Lb, there is no distortion.
If there is any distortion in the sub scanning direction, perform
the following procedures.
4) Loosen either one of the fixing sc rews of the scanner unit drive
pulley. (Either one on the front frame or on the rear frame will
do.)
5) Without moving the scanner unit  drive shaft, manually turn the
scanner unit drive pulley to  change the parallelism of the scan-
ner unit A and B. (Change the relative position of the scanner
unit drive pulley and the drive shaft.) 6) Tighten the scanner unit drive pulley fixing screw.
Repeat the procedures 2) - 6) unt
il the condition of the procedure 3)
is satisfied.
 
6-C Scan image (main scanning direction) 
distortion adjustment
1) Make a test chart on A3 (11 x 17) paper as shown below.
(Draw a rectangular with four right angles.)
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 rectangl e of the copy image are right
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.
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.
30mm
La Lb
L
L
L = 10mm
L
L
Lc
Ld
Copy ALc
Ld
Copy B
There is no difference
between the distortion on
the right and that on the left. Lc Ld
Lc Ld
There is some difference
between the distortion on
the right and that on the left. 
						

							MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 24
5) Change the height balance of the scanner rail on the front
frame side.
Remove the lower cabinet of the operation panel. Loosen the
scanner rail fixing screw to change the balance between the
right and the left heights of the scanner rail.
Repeat the procedures 2) - 5) until the difference between the
image distortions (distort ion balance) is deleted.
6) Without changing the balance of the scanner rail on the front 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.
 
ADJ 7Scanner image skew 
adjustment (RSPF mode)
This adjustment must be performed in the following cases:
* The RSPF section has been disassembled.
* When replacing the RSPF unit.
* The RSPF unit generates skewed scanned images.
1) Create an adjustment chart by printing in duplex mode the self- print pattern (grid pattern) specified in Simulation 64-2.
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
leading and trailing edges of the paper surface lead edge sec-
tion. 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.
Check Method 1
Check Method 2
Check that the squareness of the main scanning direction
print line for the longitudinal direction of paper is within
1.0mm.
If the copy image is not in the above state, perform the pro-
cedure 3).
3) Open the RSPF unit, and loos en the fixing screw of the hinge.
4) Slide the RSPF unit in the arrow direction to make the skew adjustment.
5) Make a copy again and measure (a) and (b) on the copied test chart. Repeat procedures 2) to 5) until the condition ((a) - (b) =
 1mm or less) is satisfied.
A
BPaper pass direction
AB
a b
(Front side)
Make sure that the output satisfies the condition: |a-b| ± 1 mm
A
0 - 1.0mm