Adj 5 Adjusting The Image Focus - Sharp AR-M550N Service Manual

: Feb. 9 2004
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4) Open the SPF and loosen the screw.
5) Adjust by turning the SPF skew adjusting screw on the right side of
the SPF rear frame.
Remove the hexagon cap nut of the SPF skew adjusting screw on
the right side of the SPF hinge and loosen the fixing nut, then
adjust by turning the SPF skew adjusting screw (hexagon screw).
If a < b, then turn counterclockwise the SPF skew adjusting screw
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(hexagon screw). (When the main scanning direction print line is
shifted to the left)
If a > b, then turn clockwise the SPF skew adjusting screw (hexa-
gon screw). (When the main scanning direction print line is shifted
to the right)
Repeat steps 2 to 5 until an acceptable result is obtained.
[If the copied image of the paper's back side is skewed beyond
the acceptable level, do the following steps.]
6) Remove the SPF front cover.
7) Change the front frame side CIS fixing position (angle) to adjust
the skew of the copied image of the paper's back side.
This adjustment should be done by loosening the CIS fixing screw
on the SPF front side and then moving the fixing plate in the left or
right direction.
If c < d, then shift the CIS fixing plate to the right. (When the main
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scanning direction print line is shifted to the left)
If c > d, then shift the CIS fixing plate to the left. (When the main
scanning direction print line is shifted to the right)
Repeat steps 2 to 7 until an acceptable result is obtained.
AR-M550/M620/M700 SETTING AND ADJUSTMENTS 7 - 14
ADJ 5 Adjusting the image focus
The result of this adjustment will affect all image scan modes (copy,
scan, and fax).
ADJ 5A Adjust the image focus in original table
mode and SPF front-face mode (CCD)
This adjustment is needed in the following situations:
• The CCD unit has been removed from the machine.
• The CCD unit has been replaced.
• Copied/scanned/faxed images are not correctly focused.
1) Go through the modes specified in Simulation 48-1.
SIMULATION 48-1
1 MAGNIFICATION ADJUSTMENT. SELECT 0-7, AND PRESS START.
0.TRAY SELECT 1 1.PRINT START
2.MAGNIFICATION 100
3.CCD(MAIN) 50 4.CCD(SUB)
6.CIS(MAIN) 50 7.SPF(MAIN)
Select other than 0 - 2,
and press [START] key.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. INPUT VALUE 0-99, AND PRESS
START.
4.CCD(SUB)
Press [START] key.
Select 1, and
press [START] key.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. NOW COPYING.
Select 0, and press [START] key.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT. SELECT 1-16, AND PRESS START.
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(FEED TRAY)
1.TRAY1 2.TRAY2 3.TRAY3 4.TRAY4
5.BPT 6.LCC
(ABOVE+10: DUPLEX MODE)
Select 2, and
press [START] key.
SIMULATION 48-1
MAGNIFICATION ADJUSTMENT.
(MAGNIFICATION)
INPUT 25-400(%)
2) Set the adjustment item CCD (MAIN) to 50 (default).
3) Place a scale on the original table as illustrated below.
50 5.SPF(SUB) 50
2
50
Press [CUSTOM SETTINGS] key.
50
Press [CUSTOM SETTINGS] key,
or terminate copying.
Press [START] key, or
press [CUSTOM SETTINGS] key.
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Press [START] key, or
press [CUSTOM SETTINGS] key.
100