190 Theory of operation ENWW
Paper feeder
The paper feeder is an optional unit that is installed at the bottom of the printer. It picks up and
delivers a sheet of paper to the printer. Figure 5-64 illustrates the paper path.
Figure 5-64 Paper feeder
The paper feeder is controlled by the DC controller. The DC controller drives each load (solenoids,
clutches) at the required timing via the paper feeder PCB. The paper sensor detects the presence
of paper. The paper feeder is supplied with +24V (for solenoids and clutches) and +3.3V (for
sensors) of power.
Figure 5-65 illustrates the flow of signals to and from the paper feeder PCB.
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