5) Calculate the vertical copy magnification ratio.
Vertical copy magnification ratio =
Copy image size
Original size
x 100 (%)
6) Check that the actual copy magnification ratio is within the
specified range (100
±
1.0%).
If it is out of the specified range, perform the following proce-
dures.
The set vertical copy magnification ratio will be displayed in
the copy quantity display.
7) Execute simulations 48-1 and select the vertical copy mag-
nification ratio adjustment mode.
The set vertical copy magnification ratio will be displayed in
the COPY QUANTITY display.
This simulation allows the vertical copy magnification ratio
adjustment and the horizontal copy magnification ratio ad-
justment. Selection is made by the density select key.
Vertical copy magnification
ratio adjustment
Auto density lamp ON
Horizontal copy magnification
ratio adjustment
Auto/Manual density
lamp ON
8) Enter a new vertical copy magnification ratio with the numeric
key and press PRINT button. The above procedure changes
the lens home position and the vertical copy magnification
ratio.
When the copy magnification ratio is set to a larger value, the
actual copy magnification ratio becomes larger.
When the copy magnification ratio is set to a smaller value,
the actual copy magnification ratio becomes smaller.
Repeat procedures 1) to 8) until the vertical copy magnification
ratio in the normal (100%) copy mode is within the specified
range.
b. Horizontal copy magnification ratio adjustment (Zoom
copy)
I.
Summary
Scanning speed is changed with simulations 48-1 to adjust the
horizontal copy magnification ratio.
II.
Note
Before performing this adjustment, the following adjustments
must have been completed. If not, this adjustment cannot be
performed properly.
*
Image distortion adjustment
*
Focus adjustment
*
Vertical copy magnification adjustment
III.
Cases when the adjustment is required
1) When the lens and the mirror unit are disassembled or the
part is replaced.
2) When the scanner unit drive section is disassembled or the
part is replaced.
3) When the main PWB is replaced.
4) When the RAM in the main PWB is replaced.
5) When "U2" trouble occurs.
6) When the copy image distortion adjustment is performed.
7) When the center position of copy image is adjusted.
8) When the focus is adjusted.
IV.
Necessary tools
*
Screwdriver (+)
*
Scale
100
110
120
130
150
140
mm
1/2mm
JAPAN
HARDDENCD
STAINLESS
Shizuoka
100
110
120
130
150
140
mm
1/2mm
JAPAN
HARDDENCD
STAINLESS
Shizuoka
110
10
20
10
20
(When a 100mm scale is used as the original.)
Paper feed
direction
Reference
Comparison point
Original (Scale)
Copy
9 – 12
www.freeservicemanuals.info
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Published in Heiloo, Holland.
