MX-4140N, MX-4141N, MX-5140N, MX-5141N (serv.man8). Installation Manual Revised June 2014. - Sharp Copying Equipment Service Manual (repair manual). Page 17

MX-5141FN  MX-4140N/4141N/5140N/5141N (MAIN UNIT)  2 – 8

4)

Write down the displayed skew level. 
(Meaning of the skew level value and the adjustment proce-
dure)

* If "OK" is displayed for all items of C, M, and Y (SKEW),

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. C, M, and Y indicate numbers of
clicks.

The display value is rounded at the decimal point.

* "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: Judgment of the LSU skew adjustment result. OK or
NG.

PHASE: OPC drum phase adjustment value of the previous
time

5)

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.

NOTE: When an abnormality occurs, "ERROR" is displayed.

In this case, check each drive section and the process sec-
tion.

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 

1.0 - 199.0

100

M

Registration adjustment value sub scanning direction 
(Magenta drum 

1.0 - 199.0

100

Y

Registration adjustment value sub scanning direction 
(Yellow 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

PHASE

OPC drum phase adjustment value

1 - 8

1