Sharp SF-DM11, Service Manual

Page: 105 / 141

(Lens value input vs. test command input)
(7) Correcting the Longitudinal Distortion
Use this procedure when replacing the mirror base driving wire.
1
Set an A3-size or 11" x 17" blank paper on the original table
while applying the paper end to the glass retaining plate and
aligning the paper side edge with the front frame, as shown in
the right figure.
2 Use an A3-size or 11" x 17" copy paper to take a full-size copy
with the original cover opened.
3 Measure the width of solid at front and rear ends of the copy
paper.
L b
L a
Copy Original
Feeding direction
Glass retaining plate
Apply paper front end
to glass retaining plate
Align paper side edge
with front frame
A3-size or 11" x 17" blank paper
Value shown
on the label
Test
command
48-01
Test
command
48-01
Test command 26-09
Zoom correction
(No.4/5 mirror)
Test command 26-08
Zoom correction (lens)
=
↵
1.0 60 45
8 8
1.1 61 45
1.2 62 46
1.3 63 46
1.4 64 47
7 7
1.5 65 47
1.6 66 48
1.7 67 48
1.8 68 49
6 6
1.9 69 49
2.0 70 50
2.1 71 50
2.2 72 51
5 5
2.3 73 51
2.4 74 52
2.5 75 52
2.6 76 53
4 4
2.7 77 53
2.8 78 54
2.9 79 54
3.0 80 55
3 3
3.1 81 55
3.2 82 56
3.3 83 56
3.4 84 57
2 2
3.5 85 57
3.6 86 58
3.7 87 58
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