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6) Check that the actual copy magnification ratio is within
the specified range. (100 ± 1.0%).
If it is not within the specified range, perform the following
procedures.
7) Execute SIM 48-1 to select the sub scanning direction
copy magnification ratio adjustment mode. To select the
adjustment mode, use the copy mode select key.
(Photo exposure lamp ON)
8) Enter the new set value of sub scanning direction copy
magnification ratio with the copy quantity set key, and
press the COPY button.
Repeat procedures 1-8 until the sub scanning direction
actual copy magnification ratio in 100% copying is within
the specified range.
When the set value is changed by 1, the magnification
ratio is changed by 0.1%.
5.2.3 Lens unit attachment reference
Attach the lens unit so that the lens unit number on the lens
adjustment plate is aligned with the scribe line on the base
plate.
Example: Lens unit number –2.8
Attach the lens unit at 2 scales in the paper
exit direction from the reference line.
Note: Never touch the other screws than the unit attachment
screw. The lens unit is supplied only in a whole unit.
5-6
5.2.4 Image position adjustment
There are following five kinds of image position adjustments,
which are made by laser control except for the image scan
start position adjustment. For the adjustments, SIM 50 – 01
and SIM 50 – 10 are used.
No.
Adjustment item
1
Print start position
2
Image lead edge void amount
3
Image scan start position
4
Image rear edge void amount
5
Center offset
To select the adjustment mode with SIM 50 – 01, use the copy
density select key.
The relationship between the adjustment modes and the
lighting lamps are as shown in the table below.
Adjustment mode
Print start position
Image lead edge void amount
Image scan start position
Image rear edge void amount
To select the adjustment mode with SIM 50 – 10, use the
copy mode select key.
Service Manual
Simulation
50 – 01
50 – 01
50 – 01
50 – 01
50 – 10
Lighting lamp
Auto (AE) lamp
Manual (TEXT)
lamp
Photo lamp
Auto, Manual,
Photo lamps
Y101700-5
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