Epson L1800, Service Manual

Page: 123 / 149

L1800 Revision A
Adjustment Adjustment Using Adjustment Program 118
Confidential
4.2.2 PW Adjustment/First Dot Position Adjustment
Patterns are printed as shown below.
Figure 4-2. PW Adjustment Pattern/First Dot Position Adjustment Pattern

PW Adjustment
How to Judge
Enter the value of the line located 5mm away from each edge.
Example: In the left figure, enter “0” (top), “5” (bottom), “-3” (left) and “0” (right).

First Dot Position Adjustment
How to Judge
Enter the value of the point of intersection of the PW Adjustment pattern line and First
Dot Position Adjustment pattern line on the left.
Measure the distance from the left edge of the paper to the printed line. Enter the value
for the line that is exactly 5 mm away from the edge.
Example: In the left figure, enter “2” since the lines intersect at 2.
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
5mm
Intersection point of A and B
A: PW Adjustment pattern line
B: First Dot Position Adjustment pattern line