Specifications

PA/4000 User’s Manual
Section 10, Troubleshooting
Page 6
10.4 TAMPING PROBLEMS
The problems analyzed in this section are based on the premise that the print engine has
successfully dispensed a label and that label is adhering to the pad before the problem occurs.
Problem: Cylinder does not extend to apply label.
Possible Cause: System is in pause-mode.
ACTION: Press PAUSE/RESUME key to resume printing.
Possible Cause: Tamp dwell time is too small.
ACTION:
The tamp dwell time must be set greater than 30 ms to extend the
cylinder. If the dwell time is less than 30 ms, increase the value no
more than 10 ms at a time. Adjust the tamp dwell-time using the
procedure described in Section 5.4.2.
Possible Cause: Cylinder air pressure set too low.
ACTION: Adjust the airflow to the cylinder by turning the tamp air regulator
clockwise until the gauge reads 20-40 psi.
Possible Cause: Photosensor 1 problem.
ACTION: 1. Check the cable connection between the photosensor and PA/4000.
2. Clean the photosensor lens with a soft-tipped swab and
isopropyl alcohol.
3. Adjust and direct Photosensor 1 at the product.
4. Adjust the sensing distance of the photosensor with the
potentiometer at the rear of the photosensor.
Possible Cause: Label-present sensor is not detecting a label on the tamp pad.
ACTION: 1. Make sure DIP switch 7 is switched ON. See Section 5.3.
2. Make sure that the sensor is .20 inches up and not flush with
the bottom of the tamp pad. See Section 5.4.5.
Possible Cause: Cable connections
ACTION: Make sure that the Cables are properly connected.
Possible Cause: Cylinder rods are bent
ACTION: Determine what caused the cylinder to bend and call Diagraph Service
(1-800-526-2531) for replacement cylinder kit: 6150-830 for 6-inch
cylinder assembly; 6150-831 for 12-inch cylinder assembly; or 6150-832
for an 18-inch cylinder assembly.
Possible Cause: Cylinder airflow control is set incorrectly.
ACTION: Review Section 4.17.1.