AR-M550 (serv.man15). (8) Simulation - Sharp Copying Equipment Service Manual (repair manual). Page 66

AR-M550/M620  SIMULATION  8 - 66

When the sub scanning direction image magnification ratio adjustment
with SIM 48-1 cannot provide a satisfactory result if a different magnifi-
cation ration is set and a copy is made, perform this simulation.

When there is an error in the copy magnification ratio in reduction
copy, change the adjustment value of the high speed mode. When
there is an error in the copy magnification ratio in enlargement copy,
change the adjustment value of the low speed mode.

1) Select the number corresponding to the adjustment mode with 10-

key.

2) Press [START] key.

3) Enter the copy adjustment value with 10-key.

The scanner/SPF motor rotation sped adjustment value is entered.

4) Press [START] key.

(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 follows. 

(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 following

procedures.

∗

If the lead edge void are is not 3.5mm:
Change the adjustment value of RRCB and perform the adjust-
ment. (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 adjust-
ment. (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 adjust-
ment 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 adjustment
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.

NOTE: When [P] is pressed after entering an adjustment value, the

adjustment value is set. When [START] key is pressed instead,
the adjustment value is set and copying is performed.)

48-5

Adjustment

Used to adjust the copy magnification ratio in the sub 
scanning direction. 

Optical (Image scanning)

Picture quality

Item

Content

Set 

range

Default

0

MIR (220)

Mirror motor (220mm/sec)

0 - 99

50

1

MIR (110)

Mirror motor (110mm/sec)

2

SPF (360)

SPF motor (360mm/sec)

3

SPF (220)

SPF motor (220mm/sec)

4

SPF (110)

SPF motor (110mm/sec)

Select other than 0 - 5, and 
press [START] key.

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

50-1

Adjustment

Used to adjust the copy image position and the void 
area (image loss) adjustment on print paper in the 
copy mode. (The similar adjustment can be performed 
with SIM 50-5 and 50-2 (Simplified method).) 
(Document table mode)

Picture quality

Image position

0

SIMULATION 48-5

MOTOR SPEED ADJUSTMENT. SELECT 0-4, AND PRESS START.

0.MIR(220) 

50

    1.MIR(110) 

50

2.SPF(360) 

50

    3.SPF(220) 

50

 

4.SPF(110) 

50

50

SIMULATION 48-5

SCAN MOTOR SPEED ADJUSTMENT. INPUT VALUE 0-99, AND

PRESS START.

0.MIR(220)

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.

Correction value for 
RRCB in the back 
surface print mode

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

Normal display

NOW COPYING.

ERROR display

Door open

DOOR OPEN.

Jam

JAM

Paper empty

PAPER EMPTY.