Read Sharp MX-M364N / MX-565N (serv.man4) Service Manual online
MX-M565N ADJUSTMENTS AND SETTINGS 4 – 14
ADJ 5
Scanner image skew
adjustment (DSPF model)
adjustment (DSPF model)
5-A
DSPF parallelism adjustment
This adjustment must be performed in the following cases:
* The DSPF section has been disassembled.
* The DSPF unit has been replaced.
* When a DSPF JAM is generated.
* When a skew is generated in the document feed operation.
* When there is a distortion (skew) in the scan image in the DSPF
unit.
1)
Close the DSPF unit and check the clearance between the
projections in the front side and the rear side and the SPF
glass holding resin surface.
projections in the front side and the rear side and the SPF
glass holding resin surface.
Cut copy paper in the longitudinal direction.
2)
Visually check to insure that the clearance A is 1mm or less
and the clearance B is 0mm (in contact). If the above require-
ment is not met, do step 3).
and the clearance B is 0mm (in contact). If the above require-
ment is not met, do step 3).
3)
Turn the height adjustment screw to adjust the DSPF front/rear
frame horizontal level.
frame horizontal level.
When the front frame side is higher (there is a clearance in B):
Turn the height adjustment screw R of the DSPF rear frame
clockwise. When the rear frame side is higher (clearance A is
more than 1mm): Turn the height adjustment screw L of the
DSPF rear frame counterclockwise. Repeat steps 2) to 3) until
an acceptable result is obtained.
Turn the height adjustment screw R of the DSPF rear frame
clockwise. When the rear frame side is higher (clearance A is
more than 1mm): Turn the height adjustment screw L of the
DSPF rear frame counterclockwise. Repeat steps 2) to 3) until
an acceptable result is obtained.
4)
After adjustments of A and B, check to insure that the projec-
tion on the front right side is in contact with the glass surface of
the main unit.
tion on the front right side is in contact with the glass surface of
the main unit.
5-B
DSPF/RSPF skew adjustment
(Front surface mode)
(Front surface mode)
This adjustment must be performed in the following cases:
* The DSPF/RSPF section has been disassembled.
* When replacing the DSPF unit.
* The DSPF/RSPF unit generates skewed scanned images.
1)
Make an adjustment chart by printing in duplex mode the self-
print pattern (grid pattern) specified in Simulation 64-2.
print pattern (grid pattern) specified in Simulation 64-2.
SIM 64-2 set values
A = 1,
B = 1,
C = 254,
D = 255
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.
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.
A
B
0mm
1mm
R
L
A
B
Paper pass direction
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