AR-M351U, AR-M451U (serv.man16). Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 5

AR-M351U/M451U, AR-M355U/M455U  ADJUSTMENTS  8 - 5

When the set value is increased, the warp amount of paper is
increased. When the adjustment value is decreased, the warp
amount of paper is decreased.

• LSU right angle adjustment (If there is no distortion in self print,

the adjustment is not required.)

• Print off-center adjustment

• Resist amount adjustment

• Front/rear and left/right void amount setting

• OC scan lead edge adjustment

• SPF scan lead edge adjustment

1) Execute SIM 50-5.
2) Set the lead edge void adjustment value (DENA) as specified

below.

(Standard set value) Paper lead edge void: 3.5mm (DENA:
35)

∗

Set the adjustment value of DENA to 35. (Enter 35 as the
adjustment value of DENA, and press [P] key.)

3) Check the lead edge void area on the self print pattern

(SIM67-1).

(Enter 1 and press [START] key.)

4) If the adjustment result is not satisfactory, perform the follow-

ing procedures.

∗

If the lead edge void area is not 3.5mm:
Change the adjustment value of RRCB and perform the
adjustment. (Change the adjustment value of RRCB and
press [START] key.)
(Shift for the adjustment value change: 0.1mm/step)

• LSU right angle adjustment (If there is no distortion in self print,

the adjustment is not required.)

• Print off-center adjustment

• Resist amount adjustment

• Print lead edge adjustment

• OC scan lead edge adjustment

• SPF scan lead edge adjustment

1) Execute SIM 50-1.
(Lead edge image loss/void area adjustment)

1) Set the lead edge image loss adjustment value (LEAD EDGE)

and the paper lead edge void adjustment value (DENA) as fol-
lows. 

(Standard set value) 
Lead edge image loss: 1.5mm (LEDA: 15)

Paper lead edge void: 3.5mm (DENA: 35)

∗

Set LEAD to 15. (Enter 15 as the adjustment value of LEAD,
and press [P] key.) (0.1mm/step)

∗

Set DENA to 35. (Enter 35 as the adjustment value of
DENA, and press [P] key.) (0.1mm/step)

2) Make a copy at the normal ratio (100%) and check the lead

edge void area and the image loss. (Enter 100 as the set value
of the copy magnification ratio (MAGNIFICATION), and press
[START] key.)

3) If the adjustment result is not satisfactory, perform the follow-

ing procedures.

∗

If the lead edge void are is not 3.5mm:
Change the adjustment value of RRCB and perform the
adjustment. (Change the adjustment value of RRCB and
press [START] key.) (1msec/step)

∗

If the lead edge image loss is not 1.5mm:
Change the adjustment value of RRCA and perform the
adjustment. (Change the adjustment value of RRCA and
press [START] key.)
(Shift for the adjustment value change: 0.2mm/step)

(Rear edge void area adjustment)

Adjust so that the rear edge void area is 3.5mm. (Change the
adjustment value of TRAIL EDGE, and press [START] key.)

(Front/rear frame direction image loss adjustment)

Set the adjustment value of SIDE to 20. (Enter 20 as the adjust-
ment value of SIDE, and press [P] key.)

When the adjustment value is changed, the image position is
shifted in the front/rear frame direction.

(Front/rear frame direction void area adjustment)

Adjust so that the total of the front/rear direction void areas is
7.0mm. (Change the adjustment values of FRONT/REAR, and
press [START] key.)

Front frame void area = 3.5mm

Rear frame void area = 3.5mm

If, as shown above, the front and the rear void areas are not even,
use SIM 50-5 to adjust the image off-center position.

Item

Set 

range

Default

AR-M351U/

M355U

AR-M451U/

M455U

2 TRAY1

Tray 1 resist 
adjustment value

0 - 99

65

60

3 TRAY2

Tray 2 resist 
adjustment value

55

50

4 DESK

Desk resist 
adjustment value

55

50

5 BPT

Manual tray resist 
adjustment value

60

55

6 ADU

ADU resist 
adjustment value

55

50

Set position 

Specification 

Set value

Self print lead 
edge 
adjustment  
SIM 50-5

Print start 
position A of 
the output 
pattern 1

A = 4.0mm or less
(Lead and tail 
total: 8.0mm or 
less)

Shift of 
0.175mm 
(35ppm) / 
0.225mm 
(45ppm) for 
set value 1.

2

SIMULATION 50-5
LEAD EDGE ADJUSTMENT. SELECT 0-20, AND PRESS START.
0.TRAY SELECT 

1

  1.PRINT START

(ADJUSTMENT DATA)
LEAD EDGE: 2.RRCB 

50

    3.SIDE2 ADJ. 

50

RESIST:  4.T1  

50

  5.T2  

50

  6.DESK 

50

         7.BPT 

50

  8.ADU 

50

OFF CENTER: 9.T1   

50

  10.T2  

50

  11.T3 

50

  12.T4 

50

            13.BPT 

50

  14.ADU 

50

(VOID SETTING) 15.LEAD_EDGE(DENA)  

50

               16.TRAIL_EDGE(DENB) 

30

  17.FRONT/REAR 

30

A

[Output pattern]