Read Sharp AR-M550 (serv.man14) Service Manual online
AR-M550/M620 SETTING AND ADJUSTMENTS 7 - 13
3) Gently pulling out each check sheet for SPF levelness adjustment,
make sure that no gap is felt between the CIS guide boss and the
glass for SPF mode for each of the front and rear frame sides.
glass for SPF mode for each of the front and rear frame sides.
If the above requirement is not met, do step 4.
4) Turn the height adjusting screw on the left side of the SPF rear
frame to adjust the fore/aft levelness between the SPF frames.
If the front frame side is higher (i.e. there is a gap in B) : turn the height
adjusting screw L on the left side of the SPF rear frame in the clock-
wise direction.
adjusting screw L on the left side of the SPF rear frame in the clock-
wise direction.
If the rear frame side is higher (i.e. there is a gap in A) : turn the height
adjusting screw L on the left side of the SPF rear frame in the counter-
clockwise direction.
adjusting screw L on the left side of the SPF rear frame in the counter-
clockwise direction.
Repeat steps 2 to 4 until an acceptable result is obtained.
This adjustment is needed in the following situations:
• The SPF section has been disassembled.
• The SPF unit has been replaced.
• The SPF unit generates skewed scanned images.
1) Create an adjustment chart by printing in duplex mode the self-
print pattern (grid pattern) specified in Simulation 64-1.
Make sure that the print grid pattern is almost in parallel with the
paper edges, and apply position marks 'A', 'B', 'C' and 'D' to the
leading and trailing edges of the paper for both front and back
sides of the paper.
paper edges, and apply position marks 'A', 'B', 'C' and 'D' to the
leading and trailing edges of the paper for both front and back
sides of the paper.
2) Copy the adjustment chart (created in step 1) to A3 (11" x 17")
paper in duplex mode, and then check the image for skews (Set in
the SPF feed tray so that the mark on the adjustment chart is at the
edge).
the SPF feed tray so that the mark on the adjustment chart is at the
edge).
Make sure that the output satisfies the condition: |a-b|
≤
± 1 mm
Check with one of the following methods.
[Check Method 1]
[Check Method 2]
Make sure that the right-angle level of the traverse print line is
0.5mm or less with respect to the longitudinal print line of paper.
0.5mm or less with respect to the longitudinal print line of paper.
If the above requirement is met for the copied image of the paper's
front side but not for the paper's back side, skip to step 4.
front side but not for the paper's back side, skip to step 4.
If the above requirement is not met for the paper's front side, then
do step 3.
do step 3.
3) Loosen the hinge screws and lower the two attachments.
ADJ 4B
Adjust SPF skews
A
B
R
L
A
B
A
B
a
b
A
B
c
d
A
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