Sharp SF-1014 Service Manual page 55

3'
(7)
Use a half-tone document and make a
100% copy on B4 or 8 1/2" x 14"
paper in the half tone mode.
Check the uniformity.
NO
Is the uniformity OK ?
YES
Put the scale to the document
reference plate and set in the paper
transport direction.
Set the Sim45 set value to "0."
(8)-a YES
Set the Sim50-1 set values A and B
to "0."
Make a copy on B4 or 8 1/2" x 14"
paper at the max. enlargement ratio
and the min. reduction ratio in the
document table mode.
Measure the distance between the
copy image lead edge and the paper
lead edge of each copy.
L1 = Distance in the max. enlargem
ent ratio
L2 = Distance in the min. reduction
ratio
Calculate the Sim50-1 set value from
the following formula.
A = 8.243 x (L1 - L2)
B = 16.0668 x L2 -7.9661 x L1
Set the Sim50-1 set values A and B.
YES
4
Make copies at the max. enlargement
ratio and the min. enlargement ratio.
Measure the distances between the
copy image lead edge and the copy
paper lead edge of the max. enlarge-
ment copy and the min. enlargement
copy, and compare the two.
Change the installing position of
the exposure adjustment plate
to adjust the uniformity.
Make a 100% copy with Sim50-1.
Measure the distance between the
copy image lead edge and the copy
paper lead edge.
4'
Change the Sim50-1 set value A
NO
0 ± 1.0 mm ? so that the difference is within
the specified range.
Change the Sim50-1 set value
B so that the difference is
within the specified range.
(SF-2414/2514)
Change the Sim50-1 set value
A so that the difference is
NO
0 ± 1.0 mm ?
within the specified range.
(SF-2314)
YES
(8)-b
Make a 100% copy in the document
table mode and check the lead edge
void area. (Document table mode)
Use a black color document and
make a 100% copy on the A4 or
8 1/2" x 14" paper
Change the Sim45-1 set value
NO
to adjust the end edge void
area.
7 – 5
Change the Sim45-1 set value
NO
+3
0 mm ?
-0
to adjust the void area.
YES
NO
1 ~ 3mm ?
YES
End