Sharp SF-1120, SF-1020 Horizontal copy magnification ratio adjustment, Adjustment procedure

E. Horizontal copy magnification ratio adjustment

a.This adjustment is performed to meet the displayed magnifica- tion ratio with the actual one.

b.This adjustment must be performed in the following cases:

•When the main PWB is replaced.

•When the EEPROM in the main PWB is replaced.

•When the mirror motor is replaced.

•When self diag. U2 occurs.

The scanning speed of the mirror base is changed to adjust the horizontal (paper transport direction) copy magnification ratio.

<Adjustment procedure>

(1)Put a scale on the original table as shown in the figure below, and execute simulation 48-02. The machine starts warming up

and the ready lamp lights up. At the same time, the previously set value ( 1 ∼ 99) is displayed. Under this state, make a nor-

mal copy and calculate the copy magnification ratio.

(2)Replace the displayed value with the copy magnification ratio correction rate obtained in (1).

(Input value) = (Previously set value) / (Copy magnification ratio correction rate [%]) ×10

(Example) When the previously set value is 25, the input values of examples 1 and 2 are as follows:

•Example 1: 35 = 25 + (1 × 10)

•Example 2: 15 = 25 + (–1 × 10)

Enter the input value and press the print switch. The value is stored and the ready lamp lights up.

Eg1: Copy A, of

which length 10 20 90 100 110 is shorter

than original

									Scale
10	20	30 40	50	60	70	80	90	50	100 110 120130 140
								Space
									Blank paper

Scale
	10	20	90	100	110
(Original)

Eg2: Copy B, of

which length 10 20 90 100 110 is longer

than original

(3)Cancel simulation 48-02.

Note: Input correction can be made in the range of 1 – 99 (simulation set range).

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