Read Sharp AR-C262M (serv.man3) Service Manual online
AR-C262M SETTING AND ADJUSTMENTS 8 - 8
6) If the above conditions are not satisfied, remove the develop-
ing unit and turn the print engine image skew adjustment
screw to adjust.
screw to adjust.
At that time, use SIM 7-1 to set DV CHECK DISABLE to
Enable and to disable the developing unit installation detec-
tion.
Enable and to disable the developing unit installation detec-
tion.
If skew is made in the arrow direction A, turn the adjustment
screw clockwise. If skew is made in the arrow direction B, turn
the adjustment screw counterclockwise.
screw clockwise. If skew is made in the arrow direction B, turn
the adjustment screw counterclockwise.
7) Enter the SIM 61-4 mode.
SIM 61-4
8) Select the A4 (11 x 8.5) size paper feed tray.
9) Press the [EXECUTE] key.
The print engine image skew adjustment pattern is printed.
(One page)
(One page)
10) Check the printed image skew (distortion) pattern.
Compare the same color print pattern on the front frame side
with that on the rear frame side, and check that the difference
between the two highest-density areas is within 2 steps.
(Compare the same color print pattern on the front frame side
with that on the rear frame side. There is no need for the posi-
tions of the highest-density areas of the print color patterns of
all the colors to be aligned on a line. Compare only the same
color pattern positions.)
with that on the rear frame side, and check that the difference
between the two highest-density areas is within 2 steps.
(Compare the same color print pattern on the front frame side
with that on the rear frame side. There is no need for the posi-
tions of the highest-density areas of the print color patterns of
all the colors to be aligned on a line. Compare only the same
color pattern positions.)
If the above conditions are not satisfied, remove the developing
unit on the left and turn the print engine image skew adjustment
screw on the front frame side.
unit on the left and turn the print engine image skew adjustment
screw on the front frame side.
To adjust the print engine image skew of Cyan, for example,
remove the Magenta developing unit. (To adjust the print engine
image skew of Yellow, however, this is not required.)
remove the Magenta developing unit. (To adjust the print engine
image skew of Yellow, however, this is not required.)
When the image pattern on the front frame side is skewed to the
right (arrow direction A) with the rear frame side as the reference,
turn the adjustment screw clockwise. When the image pattern is
skewed to the left (arrow direction B), turn the adjustment screw
counterclockwise.
right (arrow direction A) with the rear frame side as the reference,
turn the adjustment screw clockwise. When the image pattern is
skewed to the left (arrow direction B), turn the adjustment screw
counterclockwise.
When the adjustment screw is turned 1/4 rotation, the image posi-
tion is shifted by one dot.
tion is shifted by one dot.
Remark: The print engine image focus adjustment is performed
by changing the distance between the LED array unit
and the OPC drum.
and the OPC drum.
The print engine image skew adjustment is performed
by changing the parallelism of the LED array unit for the
OPC drum.
by changing the parallelism of the LED array unit for the
OPC drum.
If either of the two adjustments is performed, it may
affect the other adjustment due to the machine structure.
affect the other adjustment due to the machine structure.
After completion of the above procedures, check that
both of the above two adjustments are satisfied.
both of the above two adjustments are satisfied.
B
A
Improper adjustment
Proper adjustment
Rear
side
side
Paper exit side
Front
side
side
Rear
side
side
Front
side
side
Paper exit side
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