Datamax Prodigy Plus Operator's Manual page 108

6. Route the media over the Guide Plate, between the Media Sensor,
and over the Platen Roller, (located beneath the Printhead), as shown
in Figure 2-5b.
7. Rotate the Media Edge Guide up and slide it to the media's edge.
8. Close the Hinge Plate and lower the Printhead by rotating the
Printhead Latch clockwise to the latched position.
Note:
If the media is not sensing, try adjusting the Media Edge
Sensor by turning the Media Edge Sensor Adjustment knob,
(see Section 5.3.2).
18
Figure 2-5b Media Installation
Prodigy Max Operator's Manual