AR-C260 (serv.man11). (8) Setting Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 13

AR-C260/C260M  SETTING AND ADJUSTMENTS  8 - 13

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.)

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.)

(Example)

New adjustment value = Current adjustment value + Rough adjustment
pattern reading value + Fine adjustment pattern reading value

A: Current adjustment value

B: New adjustment value

X: Fine adjustment pattern reading value

Y: Rough adjustment pattern reading value

The polarity of the calculation differs depending on the polarity of the
adjustment pattern reading values. There are following four cases:

1) When Y 

≥

 0, and X

 ≥

 0:

B = A + X + Y

2) When Y 

≥

 0, and X < 0:

B = A + (X + 20) + Y

3) When Y < 0, and X 

≥

 0:

B = A + (X – 20) + Y

4) When Y < 0, and X < 0:

B = A + X + Y

A: Providing that Current adjustment value = 48:

1) When Y 

≥

 0, and X 

≥

 0:

B = A + X + Y = 48 + (4) + (20) = 72

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

9

8

7

6

5

4

3

2

1

0

-1

-2

-3

-4

-5

-6

-7

-8

-9

60

-60