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AR-651/810 ADJUSTMENT
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(2) Adjustment of the magnification ratio of the lens
Notes: 1. Perform magnification ratio adjustment of the
lens only when the lens unit has been
removed or is to be replaced.
2. Before making this adjustment, check that
the primary scanning reproduction ratio of
the printer is correct.
Feeding direction
Copied ruler
Actual ruler
a. Place a ruler on the original glass and make a copy on a A4/LT-sized paper at a 100% reproduction
ratio.
b.
Compare the copied ruler with the actual ruler to see the difference in size.
c. Make adjustment following the procedure below, so as to make the distance between each mark on the
rulers match.
Note: After this adjustment is finished, be sure to perform the “deviation adjustment of the scanner primary
scanning start position”.
<Adjustment procedure>
1. Remove the original glass and lens cover.
2. Screw the two pins for the lens magnification adjustment to the long hole at the lens base.
3. Loosen the 2 screws fixing the lens unit.
Adjustment pin
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