Xerox DOCUPRINT N17 Service Manual page 542

Lower Limit Switch
This microswitch, located on the lower portion of the rear of the HCF, is actuated by the elevator slide
bearing assembly and provides lower limit sensing of the elevator/paper stack. Once this switch is made
the HCF will be static until the drawer switches are reset by opening and closing the front drawer.
Paper Out Sensor
This photo sensor, located upper left internally, is actuated by a flag arm which drops through a cut-out
in the elevator tray and provides paper present/paper out sensing of the HCF. If paper is present, then
the sensor is made, and the elevator position will be maintained and readied for feeding.
If paper is not present (last sheet fed or no paper stack inserted), then the sensor will not be made, and
the elevator (after reaching the upper limit), will then be lowered to be available for paper loading.
Feed Motor
This 24 VDC stepper motor, located in the upper left side of the drawer, under the Left Access Cover,
drives the paper feed roller assembly, allowing sheets of paper to separate and be transported forward
into the printer's paper path.
Elevator Motor
This 24 VDC stepper motor, located lower portion of the rear frame, drives the elevator up and down be-
tween the upper and lower limit switches.
Power Supply
The power supply is a universal power supply with auto-sense of the AC line voltage. It connects to J9 on
the Controller PWB and supplies +24 VDC to power the Paper Feed and Elevator Motors. The AC power
is daisy chained from the High Capacity Feeder to the printer and to other options.
Controller PWB
The Controller PWB receives +5 VDC, ground, and a paper feed signal from the printer. The Controller
PWB controls all feeder functions and supplies a paper size signal and a paper/no paper status to the
printer. All switches, motors, and sensors are connected directly to the Controller PWB.
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High Capacity Feeder Option 12-24 Xerox DocuPrint N17 Service Manual