Toshiba 5520c, 6520c

2-64

2. Copier-specific Adjustments

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures.

* Both the service technician and the user can use procedure (1).

* Only the service technician must use procedure (2).

(1) Change the threshold for the Auto Color mode.

• Follow steps (a) through (d) to perform the adjustment.

(a) Press the [USER FUNCTIONS] tab on the Control Panel to enter the "User Functions" menu.

(b) Press the [USER] button.

(d) Change the threshold with the "ACS ADJUSTMENT" indicator. If you move the indicator to the left,

the original tends to be judged as a black original. If you move it to the right, the original tends to be

judged as a color original.

<Hint> The relation between the position of the "ACS ADJUSTMENT" indicator and the judgment

result is shown below. In the actual adjustment, the threshold varies depending on the shape and

size of the original or the density level of the original image. Therefore use the table below only

as a reference.

Position of

indicator

Adjustment

value No. of stamps No. of red characters

0 +230 Approx. 10 judged as color Approx. 100

1 +190 Appr ox. 5 judged as color Approx. 60

2 +150 Appr ox. 3 judged as color Approx. 40

3 +90 Approx. 2 judged as color Approx. 20

4 +40 Approx. 1 judged as color Approx. 10

5 0 Approx. 1/2 judged as color Approx. 6

6 -20 Approx. 1/2 judged as black 4 or more

* Position of indicator: "0" in the table above denotes the left end of the indicator (the original is

judged as black most) and "6" denotes the right end of the indicator (the original is judged as

color most).

* Adjustment value: This refers to the judgment threshold for the Auto Color mode. The

adjustment value of the code in step (2) below will be added to this value.

* The diameter of the standard "stamp" is approx. from 8 mm to 12 mm. In this field the number

of the stamps on the chart and its judgment result are described.

* The size of the standard "red character" is approx. 10.5 pt. In this field the number of the red

characters entered and its judgment result are described.

After specifying the original size and copy size, copy and check the copy image quality.

If further image quality adjustments are still necessary, the service technician must use the next procedure.