Note For Adjustments - Sharp SF-2220 Service Manual

2-2. Note for adjustments

1. Only the exposure balance adjustment, the blank lamp adjust-
ment, and the copy lead edge adjustment can be performed
individually.
For the other adjustments, follow the flowchart below.
1. Mechanical reference position adjustment (without copying)
A. No. 2/3 mirror unit parallelism adjustment
Vertical skew copy adjustment --- Manual adjustment
B. Check the following preset values according to the lens focus rank.
Lens reference position adjustment --- SIM 48-01
No. 4/5 mirror reference position adjustment --- Manual adjustment
2. Adjustment while
copying
1. Image distortion,
center shift check
x d r
2. Normal (x 1.00),
zooming (x 2.00)
resolution (focus)
check
x d r
3. Normal copy
magnification ratio
(vertical, horizontal)
check
x d r
4. Exposure balance,
blank lamp position,
lead edge variation
check
x d r
END
7 – 3
Image distortion
Vertical skew copy adjustment
m n
Horizontal skew copy adjustment
Center shift:
Lens center shift adjustment
Resolution (focus) adjustment
Normal: Adjust with the No. 4/5
m n
mirror adjustment screw.
Zooming: Adjust with the zooming
cam.
Copy magnification ratio adjustment
Vertical copy magnification ratio
m n
adjustment
Horizontal copy magnification
ratio adjustment
Exposure balance adjustment
Blank lamp position adjustment
m n
Copy lead edge adjustment
(Including the void area
adjustment.)