Label Applicator Operations Manual Rev B
17
Label Applicator
Section 4: Troubleshooting
Common to All Systems
(Check these first before proceeding to specific system type.)
Problem Possible
Cause
Correction
Multiple labels are fed, without a pause
between labels
Label gap sensor is not calibrated
Perform the label gap calibration procedure as seen in “Step 5: Cali-
brate Gap Sensor” page.
Label liner is not positioned inside label
gap sensor
Set the web guides so that the liner passes through the label gap sen-
sor.
Label is not within 12,7mm (1/2”) of the
liner edge
Change material which has the label’s edge to the liner’s edge less
than 12,7mm (1/2”).
Drive roller is turning backwards, liner is
pulled from rewind
Unit is incorrectly webbed
Re-web the label liner, as seen in “Step 4: Load Media” page.
Unit is not correctly configured for left-
hand or right-hand
Confirm that the unit configuration is correct. (See “Appendix B: Appli-
cation Methods” section.)
Supply roll is signaling label low too
soon
Label Low Sensor position incorrect
Unscrew the label Low Sensor, move it to a position farther away from
the unwind supply roll core and screw into position.
Label Low Sensor malfunction
Refer to “DIAGNOSTICS SCREEN” page to verify sensor func-
tionality.
Calibration of Label Gap results in fail-
ure
Liner is too thick
This material may not be compatible with the unit’s standard sensor.
Sensor is dirty
Remove sensor from peel blade and clean it with isopropyl alcohol.
Sensor connection is faulty
Check Connector J8 on Controller Board (4750-350).
Sensor is damaged
Replace sensor.
