IBM 6400 Series, Maintenance Manual

Page: 37 / 428

37
Principles of Operation
= Hammer Released and Dot Printed
* * * * * *
1 1 3 1 3 5 1 3 5 7 1 3 5 7 9
1
2
3
4
5
6
7
1
2
3
4
5
6
1
2
3
4
5
1
2
3
4
1
2
1
7
6
5
3
4
2
1
1
2
3
*
NOTE:
Even column dot centers within the printed character
area and character space hammer positions are not
illustrated in this diagram.
= Hammer Not Released; No Dot Printed
Succesive Hammer Strokes Per Scan
Shuttle
Scan
Dot
Row
Figure 10. Action of One Hammer Spring in Text Printing