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General Information
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An internal data bus, called the I
C bus, connects all I/O boards to the main
board. Through this single bus, the main board can "poll" the I/O boards for the
state of the printer's sensors as well as actuate the printer's solenoids. This data
bus greatly simplifies the wiring that would otherwise be required for
monitoring dozens of sensors and actuating solenoids.
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I
C bus
9100-04
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Figure 1-5 The printer's I
C bus
Service Manual
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