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Model
AR-505 (serv.man8)
Pages
32
Size
1.82 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / AR505 Service Manual-Setting Adjustments
File
ar-505-sm8.pdf
Date

Sharp AR-505 (serv.man8) Service Manual ▷ View online

4) Execute SIM 48-1.
(AR-501/505)
(Other models)
5) Change value A so that the magnification ratio in the sub scanning
direction is within the specified range.
6) Change value B so that the magnification ratio in the main scan-
ning direction is within the specified range.
·
Adjustment specification: Within 
±
0.8%
·
When the copy dimension is smaller than the original
¯
Make the value greater.
·
When the copy dimension is greater than the original
¯
Make the value smaller.
When the value is changed by one step, the ratio is changed
by about 0.1%.
[AR-280/281 only]
7) Make a copy of A3 original with SPF, and measure the magnifica-
tion ratio in the sub scanning direction.
8) Change value C so that the magnification ratio in the sub scan-
ning direction is within the specified range.
9) Press the CA key to cancel the simulation.
(7) Copy image position, image loss, void area
adjustment
Before performing this adjustment, check that SIM 50-5 is set to 50. If
not, set it to 50.
This adjustment uses SIM 50-2 and SIM 50-1.
The above two simulations are used in the following manner.
Sim 50-2:
Rough adjustment
SIM 50-1:
Fine adjustment
If the desired value is obtained by SIM 50-2, there is no need to
perform SIM 50-1.
Paper exit direction
a    > Magnification ratio in the main scann ing direction
b    > Magnification ratio in the sub scanning direction
AR-505
6 – 12
8/18/1999
(Adjustment items)
No.
Adjustment item
Operation mode
SIM 50-2 set
item
SIM 50-1 set
item
Adjustment
value
Note
1
Lead edge image loss
Document
table mode
SPF mode
IMAGE LOSS
IMAGE LOSS
1.5 to 3.0 mm
2
Lead edge void area
Document
table mode
SPF mode
DEN-A
DEN-A
1.5 to 3.0 mm
3
Rear edge image loss
SPF mode
REAR LOSS
(SPF)
REAR LOSS
(SPF)
1.5 to 3.0 mm
AR-4XX
series only
4
Rear edge void area
Document
table mode
SPF mode
DEN-B
DEN-B
5
Image reference position
Document
table mode
RRC-A
6
Paper timing
Document
table mode
SPF mode
RRC-B
7
Image reference position
SPF mode
SPF
8
Distance between image lead edge
position and scale of 10mm 
´
 10
Document
table mode
L1
9
Distance between paper lead edge
and image lead edge 
´
 10
Document
table mode
L2
10
Distance between image lead edge
position x scale of 10mm 
´
 10
SPF mode
L3
Adjustment items 1  
~
  4 can be adjusted either with SIM 50-1 or SIM 50-2.
The adjustment values of items 8  
~
  10 will affect the adjustment items 5  
~
  7 automatically.
Therefore, adjusting the items 8  
~
  10 will lead to the same result as adjusting the items 5  
~
  7.
  1) Place a scale on the document table as shown below, and  make a normal (100%) copy.
Note that the scale must be placed in parallel to the scanning direction and that the scale lead edge must be clearly copied.
illust: AR-280
  2) Process the copied paper as shown below.
Cut the copied paper along the line at the edge of the scale
image. The cut line and the scale image must form a right angle
(90 degrees).
  3) Place the scale on the document table as shown below.
Note that the scale must be placed in parallel to the scanning
direction and that the scale lead edge is in close contact with the
document guide plate.
illust: AR-280
Scale
100
110
120
130
150
140
10
20
90
30
80
70
60
50
40
Scale lead edge
Paper
Cut the paper along this line.
10
20
30 40 50 60 70
80 90
50 100 110 120 130 140
Scale
Paper (White paper)
AR-505
8/18/1999
6 – 13
  4) Enter the SIM 50-2 mode.
  5) Set the image loss and DEN-A set values to "0."
  6) Set all the values of L1, L2, and L3 to "0."
  7) Make a copy at 400%. (Document table mode)
  8) Measure dimensions X and Y of the copied scale image.
X: Distance between the copy image lead edge and the scale
of 10mm
Y: Distance between the paper lead edge and the copy image
lead edge
  9) Set the document as in procedure 1) and 2) on the SPF, and
make a copy at 200% in the SPF mode.
10) Measure the dimension L3 of the copied scale image.
Z: Distance between the copy image lead edge and the scale
of 10mm
11) Enter L1, L2, and L3 as follows:
L1 = X 
´
 10
L2 = Y 
´
 10
L3 = Z 
´
 10
12) Cancel the simulation mode, make a copy in the document table
mode and in the SPF mode, and check that the lead edge image
loss and the void area are in the specified range as shown
below:
Lead edge image loss: 1.5  
~
  3.0mm
Lead edge void area:
1.5  
~
  3.0mm
If the above condition is not satisfied.
13) Enter the SIM 50-1 mode.
14) Set the scale on the document table in the same manner as in
procedure 3). Make a copy at 50% and at 400% in the document
table mode.
15) Measure the distance between the paper lead edge and the
copy image lead edge of 50% copy and 400% copy.
16) Check that there is no difference between the measured dis-
tance of 50% copy and that of 400% copy.
If the difference is more than 1.5mm, change and adjust the
RRC-A value.
Repeat procedures 12) to 16) until the above condition is satisfied.
17) Use the document made in procedures 1) and 2) and make a
copy at 50% and at 400% in the SPF mode.
18) Measure the distance between the paper lead edge and the
copy image lead edge of 50% copy and that of 400% copy.
19) Check that there is no difference between the above measured
distance of 50% copy and that of 400% copy.
If the difference between the distances is more than 1.5mm,
change and adjust the SPF value.
Repeat procedures 17) and 18) until the above condition is satisfied.
20) If the lead edge void area is outside the specified range, change
the DEN-A value.
21) If the lead edge image loss is outside the specified range,
change the IMAGE LOSS value.
22) If the rear edge void area is outside the specified range, change
the DEN-B value.
23) If the rear edge void area is outside the specified range, change
the REAR LOSS (SPF) value.
IMAGE 
LOSS
Lead edge
image loss
1.5 to
3.0 mm
The greater the set value is, the
greater the image loss is.
DEN-A
Lead edge
void area
1.5 to
3.0 mm
The greater the set value is, the
greater the void area is.
DEN-B
Rear edge
void area
1.5 to
3.0 mm
The greater the set value is, the
greater the void area is.
REAR
LOSS
Rear edge
image loss
1.5 to
3.0 mm
The greater the set value is, the
greater the image loss is.
10
20
30
40
50
X
Y
Paper lead
edge
400% enlargement copy
10
20
30
40
50
Z
Paper lead
edge
200% enlargement copy
Image loss
Lead edge void area
Rear edge void area
AR-505
6 – 14
8/18/1999
(8) Original off-center adjustment
1) Place the reference original for the off-center adjustment on the
original table.
2) Execute SIM 50-12.
(AR-501/505)
(Other models)
3) Press the PRINT button after lighting the RPL, and a copy will be
made. If the arrow image on the copy paper is shifted from the
center line as shown below, change the set value and adjust.
In the case of A
decrease the set value.
In the case of B
increase the set value.
Adjustment specification:
Within 
±
 1.7mm
(One point of the set value corresponds to the change of
about 0.1mm.)
[In the case of the AR-280]
4) Make a copy of A4 (8 1/2 
´
 11)original with the SPF, and measure
the off-center.
5) Change value C so that the off-center is within the specified
range.
[In the case of the AR-285/335]
4) Make a copy of A4 (8 1/2 
´
 11) original with the RADF, and
measure the off-center.
5) Change value B so that the off-center is within the specified
range.
6) Press the CA key to cancel the simulation.
D. Image density adjustment
The image density adjustment is required for the following copy qual-
ity mode by using the simulation.
There are two methods; the collective adjustment and the individual
adjustment of the copy quality mode. 
Copy mode (AR-280/285/335)
Copy quality mode
Collective
adjustment
Individual
adjustment
Binary
value mode
Auto mode
SIM46-2
Character mode
SIM46-9
Character/Photo mode
SIM46-10
Photo mode
SIM46-11
Multi value
(Hifi) mode
Auto mode
SIM46-3
Character mode
SIM46-5
Character/Photo mode
SIM46-6
Photo mode
SIM46-7
Copy mode (AR-250/281/286/336/405)
Copy quality mode
Collective
adjustment
Individual
adjustment
Binary
value
mode
Auto mode
SIM46-2
Character mode
SIM46-9
Character/Photo mode
SIM46-10
Photo (error diffusion)
mode
SIM46-11
Multi value
(Hifi) mode
Photo (Dither pattern)
mode (Japan only)
SIM46-2
SIM46-7
Copy mode (AR-501/505)
Copy quality mode
Collective
adjustment
Individual
adjustment
Binary
value mode
Auto mode
SIM46-2
Character mode
SIM46-9
Character/Photo mode
SIM46-10
Photo (error diffusion)
mode
SIM46-11
(1) Test chart setting
1) Place a test chart (UKOG-0162FCZZ) on the original table.
2) Place several sheets of A3 (11 
´
 17) white paper (Sharp’s speci-
fied paper) on the test chart at the center reference.
illust: AR-280
A
B
Paper exit
direction
Paper center
UKOG-0162FCZZ
1
10
W
2
3
4
5
6
7
8
9
AR-505
8/18/1999
6 – 15
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