Sharp MX-4100N Service Manual page 71
Digital full color multifunctional system
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Also See for MX-4100N:
- Operation manual (903 pages) ,
- Quick start manual (120 pages) ,
- Software setup manual (44 pages)
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5)
Change the height balance of the scanner rail on the front
frame side.
Remove the lower cabinet of the operation panel. Loosen the
scanner rail fixing screw to change the balance between the
right and the left heights of the scanner rail.
Repeat the procedures 2) - 5) until the difference between the
image distortions (distortion balance) is deleted.
6)
Without changing the balance of the scanner rail on the front
frame side, change the overall height.
7)
Set the test chart prepared in the procedure 1) on the docu-
ment table, and make a copy on A3 (11" x 17") paper. Check
that the distortion in the main scanning direction is within the
specified range.
Repeat the procedures 6) and 7) until the distortion in the main
scanning direction is in the specified range.
If the distortion in the sub scanning direction cannot be deleted
with the above procedures, perform ADJ 11D Scan image dis-
tortion adjustment (whole scanner unit).
11-D
Scan image distortion adjustment (Whole
scanner unit)
This adjustment is executed when scan image distortion cannot be
adjusted with ADJ 11A, ADJ 11B, and ADJ 11C related to the scan
image distortion adjustment.
Change the upper and lower positions of the scanner unit distortion
adjustment plate on the right edge of the scanner unit so that the
scan image distortion is minimized. By adjusting the distortion of
the whole scanner unit, the scan image distortion is adjusted.
1)
Loosen the fixing screw (A).
2)
Adjust the scanner unit distortion adjustment plate.
A
A
ADJ 12
12-A
This adjustment is needed in the following situations:
* The CCD unit has been removed from the machine.
* The CCD unit has been replaced.
* When the copy image focus is not properly adjusted.
* When the copy magnification ratio in the copy image main scan-
ning direction is not properly adjusted.
* U2 trouble has occurred.
1)
Enter the simulation 48-1 mode.
2)
Set the adjustment item CCD (MAIN) to 50 (default value).
Select the adjustment item with the scroll key, and enter the
adjustment value with 10-key and press [OK] key.
3)
Place a scale on the original table as illustrated below.
4)
Make a normal copy on A4 paper.
Press [CLOSE] key to shift from the simulation mode to the
copy mode, and make a copy.
A
A
MX-5001N ADJUSTMENTS 5 – 29
Scan image focus adjustment
(CCD unit position adjustment)
Document table mode image focus
adjustment
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