Specifications

Media Sensor Position Adjustment
Transmissive Media Sensor
The Transmissive Media Sensor contains an upper section and a lower section.
The upper section senses the infrared light emitted by the components mounted
on the lower section. The amount of light passing between these two sections
determines when either the “web” between labels or a hole or notch in the media
is present. This sensing also determines the length of the label or ticket for
non-continuous media.
The factory-set position should be sufficient for any width label, so little or no
repositioning should be required when using media with a web. If it does
become necessary to reposition the Transmissive Media Sensor, perform the
Upper Section Adjustment first followed by the Lower Section Adjustment.
Upper Section Adjustment
To adjust the upper section of the Transmissive Media Sensor for the inside half
of the media width, refer to Figures 5.5 and 5.6 and follow these steps:
1. Remove the ribbon and locate the upper section of the Media Sensor.
2. Loosen the mounting screw holding this section in position.
3. Slide the upper section along the slot to any position along the web, except
where the rounded corners of the label are detected. (When using tag stock,
position the upper section directly over the hole or notch.)
4. Tighten the mounting screw.
(160S ONLY) To adjust the upper section of the Transmissive Media Sensor for
the outside half of the media width, refer to Figure 5.6 and the illustration on
page 7-13 and follow these steps:
1. Remove the ribbon and locate the upper section of the Media Sensor.
2. Remove the printer’s left side panel and reroute the media sensor cable to
provide additional slack.
3. Remove the mounting screw to release the upper section of the sensor and
thewirecover.
4. Carefully pull the wires through the tie wrap as you reposition the sensor
and the wire cover to the outside half of the mounting bracket.
5. Replace and tighten the mounting screw; then replace the printer’s left side
panel.
Lower Section Adjustment
To adjust the lower section of the Transmissive Media Sensor, refer to
Figure 5.7 and follow these steps:
1. Locate the lower section of the Transmissive Media Sensor (a spring clip
holding a printed circuit board) under the Rear Idler Roller.
2. Slide the lower section of the sensor across its mounting rail until the two
brass colored infrared emitters are centered under the upper section.
3. Gently pull wires out from the frame as required. (Wires should have a
little slack.)
NOTE: If the lower section is being moved inward and a large loop of wire
results, remove the printer’s left side panel and gently pull the wires through. It
is important that the wires be positioned away from the drive belts and pulleys.
S -Series Maintenance Manual: Volume 1 Corrective Maintenance
38452L Rev. 3 Page 5-15