Read Sharp AR-C260 (serv.man11) Service Manual online
AR-C260/C260M SETTING AND ADJUSTMENTS 8 - 11
1) Enter the SIM 50-20 mode.
SIM 50-20
2) Select the A4 (11 x 8 1/2) paper feed tray.
3) Press the [EXECUTE] key.
The image registration adjustment pattern is printed.
4) Check the rough adjustment print pattern position and the fine
adjustment print pattern position of each color on the front and the
rear frame sides.
rear frame sides.
Check visually and use the highest-density area of each color as
the center, and regard it as the reading value of shift.
the center, and regard it as the reading value of shift.
(If the fine adjustment print pattern is in the range of 0 ± 2 for the
scale of the fine adjustment reference pattern, there is no need to
adjust.)
scale of the fine adjustment reference pattern, there is no need to
adjust.)
If the above condition is not satisfied, change the adjustment value
and tray again.
and tray again.
5) Select the color mode adjustment item to be adjusted with the
scroll key. Change the adjustment value and to adjust.
When the adjustment value is changed by 1, the image position is
shifted by one pixel.
shifted by one pixel.
Main scanning direction image position adjustment (Print engine section)
(1) How to read the fine adjustment pattern
The highest-density area of the color is regarded as the center and as the reading value of the shift amount.
(The reading value in the figure below is 4.)
(The reading value in the figure below is 4.)
(2) How to read the rough adjustment pattern
Judge the polarity by checking that the color line is shifted to the positive or the negative side.
The scales are made with the black line at the center as 0, the first mark as 20, the second mark as 40, and the third mark as 60.
The interval between rough adjustment marks is 20.
(For an example shown in the figure below, it is between 20 and 40 on the positive side. Therefore, the reading value is 20.)
(For an example shown in the figure below, it is between 20 and 40 on the positive side. Therefore, the reading value is 20.)
(Example)
ADJ 4B
Image registration adjustment
(Manual adjustment)
(Manual adjustment)
Rough adjustment
print pattern check:
print pattern check:
Check that the rough adjustment print pattern
is at the center for the rough adjustment ref-
erence pattern.
is at the center for the rough adjustment ref-
erence pattern.
Fine adjustment
print pattern check:
print pattern check:
Check that the fine adjustment print pattern is
at the center for the fine adjustment refer-
ence pattern.
at the center for the fine adjustment refer-
ence pattern.
Display
Adjustment item
Set
range
Default
value
A
CYAN
MAIN
MAIN
Main scanning direction
image registration adjustment
value
image registration adjustment
value
Cyan
12 to 88
50
B
CYAN
SUB
SUB
Sub scanning direction image
registration adjustment value
registration adjustment value
Cyan
C
MAGENTA
MAIN
MAIN
Main scanning direction
image registration adjustment
value
image registration adjustment
value
Magenta
D
MAGENTA
SUB
SUB
Sub scanning direction image
registration adjustment value
registration adjustment value
Magenta
E
YELLOW
MAIN
MAIN
Main scanning direction
image registration adjustment
value
image registration adjustment
value
Yellow
F
YELLOW
SUB
SUB
Sub scanning direction image
registration adjustment value
registration adjustment value
Yellow
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
Target adjustment range
(–2 to 2)
60
-60
First mark
Second mark
Third mark
First mark
Second mark
Third mark
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