MX-6240N, MX-7040N (serv.man24). Section 5 Adjustments and Settings - Updated November 2012 - Sharp Copying Equipment Service Manual (repair manual). Page 15

MX-7040N  ADJUSTMENTS AND SETTINGS  5 – 15

4)

Write down the displayed skew level.

* 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 the 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, turn the skew adjustment screw with the
front cover open.

MAIN F

C

Registration adjustment value main scanning direction 
(Cyan laser writing position F side)

1.0 - 399.0

Same item with SIM50-20.
* However, the adjustment accuracy is in the unit of 

0.1dot.

M

Registration adjustment value main scanning direction 
(Magenta laser writing position F side)

1.0 - 399.0

Y

Registration adjustment value main scanning direction 
(Yellow laser writing position F side)

1.0 - 399.0

MAIN R

C

Registration adjustment value main scanning direction 
(Cyan laser writing position R side)

1.0 - 399.0

M

Registration adjustment value main scanning direction 
(Magenta laser writing position R side)

1.0 - 399.0

Y

Registration adjustment value main scanning direction 
(Yellow laser writing position R side)

1.0 - 399.0

SUB

C

Registration adjustment value sub scanning direction 
(Cyan drum 

 Black drum)

1.0 - 399.0

M

Registration adjustment value sub scanning direction 
(Magenta drum 

 Black drum)

1.0 - 399.0

Y

Registration adjustment value sub scanning direction 
(Yellow drum 

 Black drum)

1.0 - 399.0

SKEW

C

Print skew amount calculation result (Cyan)

L99.9 - R99.9

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 –5.0 - +5.0, "(OK)" is displayed at 
the bottom of the value. In the other cases, "(NG)" is displayed.

M

Print skew amount calculation result (Magenta)

L99.9 - R99.9

Y

Print skew amount calculation result (Yellow)

L99.9 - R99.9

ALL_ROTATE

Print skew amount calculation result (Overall)

L99.9 - R99.9

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 –3.6 - +3.6, "(OK)" is displayed at 
the bottom of the value. In the other cases, "(NG)" is displayed.

START

Modulation control start position
(

): Previous value

0 - 71

AMP

Modulation control amplitude
(

): Previous value

0 - 12.0