3
Compare the scale image length on the copy paper and the actual
scale length.
4
Calculate the vertical copy magnification ratio correction ratio from
the following formula.
Vertical copy magnification ratio correction ratio
= Original size Copy image size/ Original size
×
100%
(Example) Vertical copy magnification ratio correction ratio
= 100 – 99/100
×
100%= 1%
5
Execute simulation 48-01A.
C
→
ë
→
0
→
ë
→
4
→
8
→
PSW
→
1
→
PSW
When the above key operation is performed, the preset value of
the vertical copy magnification ratio adjustment is displayed on the
copy quantity display.
6
Calculate the vertical copy magnification ratio adjustment preset
value from the following formula.
Vertical copy magnification ratio adjustment preset value
= The previous preset value (displayed in the above procedure
5
)
+ Vertical copy magnification ratio correction ratio
×
10
(Example) Previous preset value = 25, vertical copy magnification
ratio correction ratio = 1,
Vertical copy magnification ratio adjustment preset value
= 25 + 1
×
10 = 35
7
Enter the vertical copy magnification ratio adjustment preset
value.
→
→
PSW
When the preset value is changed by 1, the coy magnification
ratio is changed by 0.1%.
8
Make a normal copy and compare the scale image length and the
actual scale length.
9
If the scale image length is equal to the actual scale length, the
adjustment is completed. If not, repeat procedures
2
∼
8
until
the above condition is satisfied.
F
Cancel simulation 48-01.
Clear all key ON
(5) Horizontal copy magnification ratio adjustment
This adjustment must be performed in the following cases:
•
When the main PWB is replaced.
•
When the Main PWB RAM is replaced.
•
When self diag U2 occurs.
•
When the mirror motor is replaced.
The horizontal (paper passing direction) copy magnification ratio is
adjusted by changing the mirror base scan speed.
Adjustment procedure
1
Place the scale on the original table as shown in the figure, and
execute simulation 48-02. The machine goes into the warm-up
cycle, and the previously set value (1
∼
30) is displayed on the
copy quantity display. The ready lamp lights up. Under the state,
obtain the normal copy magnification ratio correction ratio.
Copy magnification ratio correction ratio
= Original size Copy image size/Original size
×
100%
2
Replace the displayed value with the copy magnification correc-
tion ratio obtained in
1
.
(Input value) = (Previously set value) + (Copy magnification ratio
correction ratio %)
×
10
(Example)
If the previously set value is 15, the input values in example of
1
and example of
2
are as follows:
•
Example 1: 15 + (–1
×
10) = 5
•
Example 2: 15 + (+1
×
10) = 25
10
20
90
100
110
1mm
10
20
90
100
110
100 mm-scale
(original)
Image, of
which length
is shorter
than the
original by
1 mm(1%).
10 20 30 40 50 60 70 80 90 50 100 110 120130 140
Scale
8 – 10
