an electrical assembly; the diagrams show them as a series of
long lines broken by short dashes. Inside the enclosure, you
find the designation "A" followed by a number. The letter "A"
indicates a printed circuit board and the number following the
letter indicates number of the circuit board in the electrical
assembly (fig. 1-4).
Printed Circuit Board.
Look at the component assembly enclosure lines on sheet 5 of
You find they separate
two different components, the driver's master panel and the
In the lower left corner of the left
enclosure, you find the same identification as in figure 1-4
(above), 2A103, driver's master panel.
Inside the driver's
master panel you find another enclosure designated A1. The A1
enclosure shows a printed circuit the diagram has designed
The diagrams use the enclosure line to
indicate voltage regulators, representing them with a series
of long lines broken by short dashes. Inside the enclosure,
you find the designation VR (fig. 1-5).
Voltage Regulator Enclosure.
Bus bars serve as a common point for several
electrical connections of the same polarity and carries
heavier current than a terminal board. The diagram identifies
bus bars using 2W for positive and 2G for negative.
appendix A for the symbol that represents a bus bar.)