Sharp SF-1014 Service Manual page 63

III. Note
Before performing this adjustment, the following adjustment
must have been completed. If not, this adjustment cannot be
performed properly.
* Lens unit right angle adjustment
* No.4/5 mirror unit right angle adjustment
* Image distortion adjustment
IV. Cases when the adjustment is required
1) When the lens unit is disassembled or its part is replaced.
2) When the lens rail is disassembled or its part is replaced.
3) When the copy image is shifted from the vertical center of the
paper.
V. Necessary tool
* Screwdriver (+)
* Scale
* Test chart for center position adjustment (Make a chart
shown below by yourself.)
Draw a line in the paper transport direction at the center of A4
or 8 1/2" x 11" paper.
VI. Adjustment procedure
1) Set the test chart for center position adjustment at the docu-
ment reference position.
2) Make a normal copy (100%) on A4 or 8 1/2" x 11" paper.
3) Check that the image of the line is at the center of the paper.
(Standard: 0±1.5mm)
1.5mm or less
(Copy A)
1.5mm or less
(Copy B)
4) If the image of the line is not at the center of the paper,
perform the following procedure.
Center
Copy paper
(A4 or 8 1/2" x 11")
Copy image
Folding of copy paper
Shift
Folding of copy paper
Copy image
Shift
5) Remove the right side cabinet and the document reference
plate.
Document
reference plate
6) Remove the document glass.
7) Remove the optical unit cover.
8) Loosen the lens rail fixing screw, and slide the lens rail back
and forth.
Lens rail
Fixing screw
9) Make a copy and check that the image line is at the center of
the paper. If not, repeat the procedures 1) to 9) until the
image line comes at the center of the paper.
7 – 13
Document table glass
Right upper side cabinet
Optical unit cover
Lens unit