The transmissive media sensor assembly consists of two parts:
Light source (lower part of the media sensor)
Light sensor (upper part of the media sensor)
The media passes between these two parts.
Adjust the position of the sensor only if the printer cannot detect the top of the labels. If that occurs, the printer display shows a "media out error" despite media being loaded.
For non-continuous media with a notch or hole, the sensor must be positioned directly at the notch or hole.
Remove the ribbon so you can clearly see the media path.
Load the media so that the green light from the media sensor is shining through a gap, notch, or hole.
If necessary, slide the media sensor horizontally using the media sensor adjustment.