MX-C250 ADJUSTMENTS 5 – 15
4)
Write down the displayed skew level.
When "SKEW_*" values are in the following ranges, the
adjustment needs not to be done.
* To make "SKEW_*" values in the following ranges, turn the
LSU skew adjustment screws clockwise direction (a) or coun-
terclockwise direction (b).
SKEW_C : +/-30, SKEW_M : +/-40, SKEW_C : +/-20
5)
If there are several skewed areas on the test printing result,
turn all the LSU skew adjustment screws shown in the figure
to adjust, and perform the procedures 2) to 4).
Repeat the procedures 2) to 5) until the printing result has no
skew area.
If the printing result has no skew area, the adjustment is fin-
ished.
For the adjustment, remove the paper tray, and turn the skew
adjustment screw from the bottom of the main unit.
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.
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.
SKEW_M
Print skew amount calculation result
(Magenta)
-999 - 999
SKEW_M(DIF)
Print skew amount calculation result
(Magenta) (Difference from the previ-
ous adjustment value)
-1999 - 1999
SKEW_Y
Print skew amount calculation result
(Yellow)
-999 - 999
SKEW_Y(DIF)
Print skew amount calculation result
(Yellow) (Difference from the previ-
ous adjustment value)
-1999 - 1999
REGIST_SUB_
C
Registration adjustment value sub
scanning direction (Cyan drum ->
Black drum)
1.0 - 199.0
REGIST_SUB_
C(DIF)
Registration adjustment value sub
scanning direction (Difference from
the previous adjustment value)
(Cyan drum to Black drum)
-199.9 - 199.9
REGISTMAIN_
C_F
Registration adjustment value main
scanning direction (Cyan laser writ-
ing position F side)
1.0 - 199.0
REGISTMAIN_
C_F(DIF)
Registration adjustment value main
scanning direction (Difference from
the previous adjustment value)
(Cyan laser writing position F side)
-199.9 - 199.9
REGISTMAIN_
C_R
Registration adjustment value main
scanning direction (Cyan laser writ-
ing position R side)
10 - 1990
REGISTMAIN_
C_R(DIF)
Registration adjustment value main
scanning direction (Difference from
the previous adjustment value)
(Cyan laser writing position R side)
-1999 - 1999
REGIST_SUB_
M
Registration adjustment value sub
scanning direction (Magenta drum ->
Black drum)
1.0 - 199.0
REGIST_SUB_
M(DIF)
Registration adjustment value sub
scanning direction (Difference from
the previous adjustment value)
(Magenta drum to Black drum)
-199.9 - 199.9
REGIST_MAIN_
M_F
Registration adjustment value main
scanning direction (Magenta laser
writing position F side)
1.0 - 199.0
REGIST_MAIN_
M_F(DIF)
Registration adjustment value main
scanning direction (Difference from
the previous adjustment value)
(Magenta laser writing position F
side)
-199.9 - 199.9
REGIST_MAIN_
M_R
Registration adjustment value main
scanning direction (Magenta laser
writing position R side)
10 - 1990
REGIST_MAIN_
M_R(DIF)
Registration adjustment value main
scanning direction (Difference from
the previous adjustment value)
(Magenta laser writing position R
side)
-1999 - 1999
REGIST_SUB_
Y
Registration adjustment value sub
scanning direction (Yellow drum ->
Black drum)
1.0 - 199.0
REGIST_SUB_
Y(DIF)
Registration adjustment value sub
scanning direction (Difference from
the previous adjustment value) (Yel-
low drum -> Black drum)
-199.9 - 199.9
REGIST_MAIN_
Y_F
Registration adjustment value main
scanning direction (Yellow laser writ-
ing position F side)
1.0 - 199.0
REGIST_MAIN_
Y_F(DIF)
Registration adjustment value main
scanning direction (Difference from
the previous adjustment value) (Yel-
low laser writing position F side)
-199.9 - 199.9
REGIST_MAIN_
Y_R
Registration adjustment value main
scanning direction (Yellow laser writ-
ing position R side)
1.0 - 199.0
REGIST_MAIN_
Y_R(DIF)
Registration adjustment value main
scanning direction (Difference from
the previous adjustment value) (Yel-
low laser writing position R side)
-1999 - 1999
PHASE
OPC drum phase adjustment value
(BK to CL)
0 - 359
PHASE before
OPC drum phase adjustment value
(BK to CL)
0 - 359
Display/Item
Content
Display
C
M
Y
B
A