Specifications

PA/4000 User’s Manual
Section 10, Troubleshooting
Page 9
Possible Cause: Auto-retract sensor sitting even with or below the tamp pad.
ACTION: 1. Check that the auto-retract sensor is not damaged.
2. Check that the auto-retract sensor is positioned above, but not
more than ¼ inch higher than the bottom of the tamp pad. See Section
5.4.5.
Possible Cause: Substrate is too dark for the sensor to read its reflected beam.
ACTION: Choose a lighter substrate.
Possible Cause: Label may be misaligned on the tamp pad.
ACTION: Make sure the tamp pad is parallel to the product. See Section 5.4.1,
step 4. Auto-retract sensor may not be set correctly. See Section 5.4.5.
Possible Cause: Dirt contaminates the sensor.
ACTION: Clean the photosensor lens with a soft-tipped swab and isopropyl
alcohol.
Possible Cause: Faulty sensor or sensor cable.
ACTION: Replace the sensor or sensor cable.
Problem: Auto-retract does not work.
Possible Cause: Auto-retract not ON on the hand-held.
ACTION: Turn auto-retract ON.
Possible Cause: Auto-retract sensor is saturated.
ACTION: Shade the PA/4000 from all ambient light
Possible Cause: Auto-retract sensor is out of its focal range.
ACTION: Align the tamp cylinder with the product by extending the
tamp cylinder until the tamp pad makes contact with the
product, or rotate the yoke until the pad lays flat against the
product. See Sections 5.4.1 and 5.4.5.
Possible Cause: Voltage is wrong.
ACTION: Check the voltage between the 9 and 7 pins on the J5 sensor
cable plug on the connector board. It should read 5VDC. If it
doesn’t, try a new connector cable between connector board and
the applicator board. Recheck 9 and 7 voltage.
Possible Cause: Ground is bad or voltage on pin 12 on chip U10 is wrong.
ACTION: Ground and check the voltage at pin 12 on chip U10 on the
applicator board. With the retract sensor uncovered it should