Zebra 49834 Manual De Usuario

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Operations
Adjust Ribbon and Media Sensors
57518L-001 Rev. A
3/18/05
170PAX4 Maintenance Manual
63
Adjust Ribbon and Media Sensors
This section describes how to adjust the media sensors.
Ribbon Sensor Position
The ribbon sensor is mounted in a fixed position, and no adjustment is required.
Reflective Media Sensor
Some types of media have black marks printed on the underside of the media liner, which act 
as “start of label” indicators. The reflective media sensor senses these black marks. The 
position of this sensor is not adjustable. If you use this type of media, refer to 
 for information about black mark requirements.
Transmissive Media Sensor
The transmissive media sensor finds “start of label” indicators, such as notches or holes in the 
media or interlabel gaps. This sensor consists of a light source (positioned below the media) 
and a light sensor (positioned above the media).
To position the sensor, complete these steps:
1.
Refer to 
. Turn the adjustment knob on the media guide shelf assembly to move 
the media sensor.
2.
How does the current media indicate the start of labels?
If the media...
Then...
Has notches or holes 
between labels
Align the sensor with the notch or hole in the media.
Uses interlabel gaps
Position the sensor approximately at the center of the media 
width.