Sharp SF-1014 Service Manual page 54

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1'
(3)-a
Make a test chart. (Draw a rectangle
NO
on B4 or 8 1/2" x 14" paper.)
With the document cover open,
make a 90% copy on B4 or
8 1/2" x 14"paper.
Check horizontal image distortion.
The
distances at the
right and the left of the horizontal
copy image line and the black background
made by the blank lamp are equal
to each other.
(3)-b
YES
With the document cover closed,
make a 10% copy on B4 or
8 1/2" x 14" paper.
Check that the right corner and the left
corner angles of the copy image are
right angles.
Is the
right corner angle
of the copy image equal
to the left corner
angle ?
YES
With the document cover closed,
make a 100% copy on B4 or
8 1/2" x 14" paper.
Check the copy image vertical
distortion.
//9/
Are the
four angles of the copy
image rectangle right
angles ?
YES
Make a test chart. (Draw a rectangle at
(4)
the center of B4 or 8 1/2" x 14" paper in
the longitudinal direction.)
Set the test chart to the document
positioning reference plate, and make
a 100% copy on B4 or 8 1/2" x 14"
paper by cassette paper feed.
Check that the copy image is at the
center of the copy paper.
Is the
copy image at the
center of the copy
paper ?
YES
2
(5)
Change the relative positions of
the rear or the front frame side
NO
scanner drive pulley and the
shaft, and adjust horizontal
(6)-a
image distortion.
Change the height balance of
right and left scanner slide rails,
NO
and adjust so that the corner
angles of the copy image
rectangle are equal to each
other.
(6)-b
Change No. 4/5 mirror height
NO
balance and adjust vertical
image distortion.
(6)-c
Change the lens rail position so
NO
that the copy image comes at
the center of the copy paper.
2'
Use the test chart (UKOG-0089CSZZ)
or the resolution chart to make a 100%
NO
copy on B4 or 8 1/2" x 14" paper so
that the resolution patterns are copied
at the center and the four corners.
Check the resolution at the center
and the four corners.
Is the center
resolution more than
NO
5.0 lines/mm and are the corner
resolutions more than
4.5 lines/mm ?
YES
Set the scale along the document
reference plate (vertical to the paper
transport direction) and make a 100%
copy on B4 or 8 1/2" x 14" paper.
Compare the scale and its copy
image size.
NO
Are they the same size ?
YES
Make a copy on B4 or 8 1/2" x 14"
paper at the max. enlargement ratio.
(Zoom model only)
Check that the max. enlargement ratio
matches with the copy image size.
Are the
NO
enlargement ratio and
the copy image size
matched ?
YES
Set the scale in the paper transport
direction, and make a copy on B4 or
8 1/2" x 14" paper at 100%.
Compare the scale and its copy
image size.
NO
Are they the same size ?
YES
Set a document with the fixed size
YES
images in the SPF mode and make
Is the SPF installed ?
a copy on B4 or 8 1/2" x 14" paper
at 100%.
NO
Compare the scale and
the copy image in the
paper transport direction.
YES
3
7 – 4
Change No.4/5 mirror positions
to adjust focus.
Set the Sim48-1 set value greater.
Set the Sim48-1 set value smaller.
YES
Is the copy
NO
image greater than the
actual scale ?
Set the Sim26-8 set value smaller.
Set the Sim26-8 set value greater.
YES
Is the copy
NO
image greater for the
enlargement ratio ?
Set Sim48-2 set value smaller.
Set the Sim48-2 set value greater.
YES
Is the copy
image greater
NO
than the actual
scale ?
Set the Sim48-3 set value
smaller.
YES
Is the copy
NO
Are they the
image greater than
same size ?
the actual scale ?
Set the Sim48-3 set value
greater.
NO

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