AR-M620 (serv.man18). (7) Settings and adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 26

AR-M550/M620  SETTING AND ADJUSTMENTS  7 - 26

1) Go through the modes specified in Simulation 50-1.

1) Set the adjustment values for leading edge image loss and leading

edge void as follows: 

(Standard setting)

Leading edge image loss: 1.5 mm (LEAD:15)

Leading edge void: 3.5mm (DENA:35)

• Set the adjustment value for (LEAD) to 15 by entering "15" into

the (LEAD) adjustment value field and then pressing the P key.

• Set the adjustment value for (DENA) to 35 by entering "35" into

the (DENA) adjustment value field and then pressing the P key. 

2) Make a copy at 100% magnification by entering "100" into the

(MAGNIFICATION) field and then pressing the Start key, and
check the leading edge void area and image loss.

If the leading edge image loss and void area are not at acceptable lev-
els, do the following steps.

(The adjustment value should be changed in steps of 1msec/0.1mm.)

• If the leading edge void area is not 3.5 mm: 

Repeat the process of changing the (RRCB) adjustment value and
then pressing the Start key until attaining an acceptable level. (The
adjustment value should be change in steps of 1msec/step, 0.1mm/
step.)

• If the leading edge image loss is not 1.5mm: 

Repeat the process of changing the (RRCA) adjustment value, in
steps of 0.1 mm, and then pressing the Start key until attaining an
acceptable level. (The adjustment value should be changed in steps
of 0.2mm.) 

Repeat the above adjustments until acceptable results are obtained.

Select 2, and 
press [START] key.

Press [START] key, or 
press [CUSTOM SETTINGS] key.

Image loss (LIL)

LIL  = 1.5 mm
LV 

= 3.5 mm

TV  = 3.5 mm

FV+RV = 7.0 mm

Papar lead edge

Papar tail edge

10

20

No Image

No Image

No Image

No Image

Void (TV)

Void (LV)

Void (FV)

Void (RV)

50

1

2

Press [CUSTOM SETTINGS] key.

Press [START] key. 

Press [CUSTOM SETTINGS] key, 
or terminate copying.

Press [START] key or 
press [CUSTOM SETTINGS] key. 

SIMULATION 50-1

LEAD EDGE ADJUSTMENT. INPUT VALUE 0-99, AND PRESS

START.

3.RRCA

SIMULATION 50-1

LEAD EDGE ADJUSTMENT. NOW COPYING.

SIMULATION 50-1

LEAD EDGE ADJUSTMENT. SELECT 1-6, AND PRESS START.

(FEED TRAY)

   1.TRAY1 2.TRAY2 3.TRAY3 4.TRAY4

   5.BPT   6.LCC

Select 1, and 
press [START] key.

Select 0, and press [START] key.

Select other than 0 - 2, and press [START] key. 

SIMULATION 50-1

LEAD EDGE ADJUSTMENT. SELECT 0-9, AND PRESS START.

0.TRAY SELECT 

1

   1.COPY START

2.MAGNIFICATION 

100

(ADJUSTMENT DATA) 3.RRCA 

50

 4.RRCB 

50 

10.SIDE2 ADJ. 

50

(IMAGE LOSS SETTING) 5.LEAD 

15

 6.SIDE 

20

(VOID SETTING) 7.LEAD_EDGE(DENA) 

50

             8.TRAIL_EDGE(DENB) 

30

  9.FRONT/REAR 

30

100

SIMULATION 50-1

LEAD EDGE ADJUSTMENT.

(MAGNIFICATION)

  INPUT 25-400(%)

Item

Content

Set 

range

Default

0 TRAY SELECT

Paper feed tray selection

1 - 6

–

1 COPY START

Copy START (Default)

–

–

2 MAGNIFICATION

Print magnification ratio

25 - 

400%

–

(Lead edge adjustment value)

3 RRCA

Document scan start 
position

0 - 99

50

4 RRCB

Resist roller clutch ON 
timing adjustment value

10 SIDE2-ADJ.

Offset (adjustment) of 
the RRCB setting during 
rear print.

1 - 99

50

(Image loss set value)

5 LEAD

Lead edge image loss 
set value

0 - 99

15

6 SIDE

Side image loss set 
value

20

(Void set value)

7 LEAD_EDGE 

(DENA) 

Lead edge void set value

0 - 99

35

8 TRAIL_EDGE 

(DENB) 

Rear edge void 
adjustment value

9 FRONT/REAR

Front/Rear void 
adjustment value

10

20

Image loss (LIL)

LIL  = 1.5 mm
LV  = 3.5 mm

Image area

Papar lead edge

Void (LV)

No Image