Adjusting The Resolution - Sharp SF-2040 Service Manual

5 Perform Simulation 48-01 =↵ .
C → =↵ → 0/◊ → =↵ →
1 → PSW causes a preset value of longitudinal magnifica-
tion to be indicated.
6 Determine a preset value of longitudinal magnification according
to the following expression:
Preset value of longitudinal magnification = previous preset
value(indicated at step 5) + [correction factor for longitudinal
magnification x 10]
Eg.: Preset value = 25 + [1 x 10] = 35
7 Type the preset value of longitudinal magnification:
→ → PSW
Changing the preset by "1" provides the magnification change of
0.1 %.
8 Take a full-size copy of the scale and compare the image length
with the scale length.
9 The image length must be the same as the scale length. Other-
wise, repeat the above steps 1 to 8 until this requirement is
met.
F Press the clear all key to clear Simulation 48.

(4) Adjusting the Resolution

1 Perform Simulation 48-01 to check that a preset value cor-
responds to a focal length of lens used:
C → 0/◊ → 0/↵ → =↵ →
1 → PSW .
When the ready lamp is lit, a preset value is indicated.
2 If no preset value exists, set a reference value according to
(2)"Adjusting the reference position of 4. and 5. mirror". Then
take a copy of "UKOG-0089CSZZ" and check the resolution.
3 When changing a preset value:
→ → PSW .
Checking Procedure
After adjusting the reference position of 4. and 5. mirror, check as
follows:
1 Set the test chart UKOG-0089CSZZ or a resolution test chart on
the original table.
2 Take a full-size copy.
3 Check if the center and corners of the copy paper is in focus.
4 The resolution must be at least 5.0 lines/mm in the center and
4.5 lines/mm in the corners. Otherwise, repeat the steps 2 to 4
of (2) while changing the preset value by 1 at a time, until this
requirement is met.
SIMULATION NO.48-*
1. FRONT/REAR MAGNIFICATION RATIO ADJUSTMENT
2. PAPER TRANSPORT DIRECTION MAGNIFICATION RATIO ADJUSTMENT
→ 8 → PSW →
4
→ → PSW →
4 8
100 mm-scale (original)
Image, of which length
is shorter than the
original by 1 mm(1%).
Applied Material: UKOG-0089CSZZ (Test chart)
FRONT/REAR MAGNIFICATION RATIO ADJUSTMENT
45MB:
LENS:
7 – 9
10 20 90 100 110
1mm
10 20 90 100 110
Check if the center and
corners is in focus
Copy paper
(A3 or 11" x 17")