Sharp MX-3500N Service Manual page 75

1) Place a scale on the document table as shown in the figure
below.
Place a scale so that it is in parallel with the scanning direction
and that its lead edge is in contact with the document guide
plate.
Place white paper on the document table so that the scale lead
edge can be seen.
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
3) Set RRCA, LEAD, and SIDE to the default values.
Item Display item
A RRCA Image lead edge position
adjustment value
B RRCB-CS12
C RRCB-CS34
D RRCB-LCC
E RRCB-MFT
F RRCB-ADU
G LEAD Image loss adjustment
H SIDE
I DENA Void area amount adjustment
J DENB
K FRONT/REAR
4) Perform the image lead edge reference position adjustment.
Press [CLOSE] key, and shift from the simulation mode to the
copy mode and make a copy in 100% mode and in 200%
mode.
When the adjustment value of RRCA is proper, the lead edge
image from 3.0mm is not copied in either of 100% and 200%
copy scale.
If not, change and adjust the RRCA value.
(Adjust so that the lead edge image from 3.0mm is not copied
in either of different copy magnification ratios.)
Repeat the above procedures until a satisfactory result is
obtained.
Scale image 3.0mm position
Paper lead
edge
5mm 10mm
5mm
Content
Document lead edge reference position (OC)
Resist motor ON timing
adjustment
Lead edge image loss adjustment
Side image loss adjustment
Lead edge void area adjustment
Rear edge void area adjustment
FRONT/REAR void area adjustment
100%
200%
10mm
MX3500N ADJUSTMENTS 6 – 30
2) Enter the simulation 50-1 mode.
SIMULATION NO.50-01
TEST
LEAD EDGE ADJUSTMENT VALUE
A xx
A: xx
B xx
C xx
0 99
D xx
10-key
SIMULATION NO.50 01
TEST
LEAD EDGE ADJUSTMENT VALUE
A xx
A:
xx
B xx
C xx
0 99
D xx
Standard cassette
Desk
LCC
Manual feed
ADU
5) Image loss adjustment
When the adjustment item of the image loss below is set to the
default value, it is adjusted to the standard state.
If it is not in the above standard state, or when it is set to a
desired value, change these adjustment items.
Paper lead edge
Copy area
1 2 3 4
Void area: 3.0mm, Image loss: 3.0mm
Display/
Content
Item
LEAD Image loss Lead edge
adjustment image loss
value adjustment
SIDE Side image
loss
adjustment
When the adjustment value is increased, the image loss is
increased. When the adjustment value is decreased, the
image loss is decreased.
When the adjustment value is changed by 1, the image loss is
changed by 0.1mm.
CLOSE
RRCA
RRCB-CS12
RRCB-CS34
RRCB-LCC
OK
OK
CLOSE
RRCA
RRCB-CS12
RRCB-CS34
RRCB-LCC
OK
Adjustment range Default value
0 – 99 50
1 – 99 50
1 – 99 50
1 – 99 50
1 – 99 50
1 – 99 50
0 – 99 30
0 – 99 20
1 – 99 30
1 – 99 20
1 – 99 20
Maginification ratio: 400%
10mm
5mm
Standard
Adjustment Default
adjustment
range value
value
3.0 ±
0 – 99 30
1.0mm
2.0 ±
0 – 99 20
1.0mm
0
0