IBM 6400 series Maintenance Manual page 37

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