Singer 40 - Operator Control Panel Overview; Control Panel Layout and Components

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2 OPERATOR CONTROL PANEL
The operator control panels of the Models 40 and 42 Disc Drives (Figure 2-1)
comprise three toggle switches and three indicator lights. The function of each
switch and light is discussed in Table 2-1.
Figure 2-1. Operator Control Panel
Models 40 and 42 Reference Manual 2-1