46 CL608e/612e
6. Cleaning and Maintenance Operation Manual
6.3 Cleaning the Label Sensor Unit
There are two sensors that are used to control the positioning of
the label. One is a transmissive see-through sensor that detects the
edge of the label by looking through the backing paper which is
translucent and detecting the presence of the opague label. The
other is a reflective sensor that detects the light reflected from the
bottom of the label liner. When dust, dirt or other foreign matter
interfers with the light path of either of these snsors, the result is
erratic label positioning. These sensors should be cleaned regu-
larly, at least every two rolls of label.
1. Turn the printer OFF and remove the power cable.
2. Open the Label Access Door.
3. Open the Label Hold-down by disengaging the latch. The
Label Hold-down is spring loaded and will stay in the up posi-
tion.
4. Apply SATO Thermal Print Head Cleaner to one of the cotton
swabs.
5. Use the cotton swab to clean any foreign matter from the
exposed surface of the sensors.
Label Sensor
Unit
Label Hold-down
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