Xerox Nuvera 100, Service Manual

Page: 9 / 304

General Information 1-9
An internal data bus, called the I 2 C bus, connects all I/O boards to the
main board. (Refer to Figure 1-5.) 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
numerous sensors and solenoids. The I
2 C bus also extends down to the
Auxiliary Feeder Unit.
0388-05
I
2
C bus
Auxiliary
feeder unit
connection
Figure 1-5. The Printer’s I 2 C Bus