Specifications

Technician’s Guide 2-39
REPLACING THE TAMP SENSORS: AUTO-RETRACT, LABEL PRESENT,
AMBIENT LIGHT and CYLINDER HOME
See Engineering Drawing #6105-150 to further illustrate this procedure.
NOTE: All four sensors are connected to cable assembly #6105-250. If any one of these
sensors fails, replace the entire cable assembly.
1. Turn the PA/4000’s power switch to the OFF position.
2. Turn the Air Shut-Off Valve to the OFF position.
3. Locate the three sensors on the Tamp Pad/Cylinder Assembly.
4. Remove the single screw holding each sensor to the Tamp Pad.
5. Cut the tie wrap holding the sensor cable to the pad.
6. Cut the tie wrap holding the sensor cable to the top of the air cylinder.
7. Remove the cable from J5 on the rear panel of the PA/4000. Set aside.
8. Find the sensor marked “P” (Present) and place it over the correct hole, facing the print engine.
9. Adjust the sensor to the all the way up position.
10. Replace the screw and tighten to secure the sensor.
11. Find the sensor marked “R” (Retract) and place it over the correct hole on the side
of the Tamp Pad. Be sure that the sensor will not come into contact with the
product when the Tamp Pad extends.
12. Find the sensor marked “A” (Ambient Light) and place it over the correct hold
located on the other side of the Tamp Pad.
13. Bundle all three wires together and fold the bottom part of the coil cable onto the
adhesive backed tie mount. Secure with a tie wrap.
14. Plug the connector cable into J5 on the rear panel of the PA/4000.
15. Turn power on - DO NOT TURN AIR ON!
16. Mount the Home Cylinder sensor using a 2/64 inch Allen wrench. DO NOT TIGHTEN.
17. Return the Tamp Cylinder to the home position by pushing up on the tamp pad.
18. Slide the Home Cylinder Bracket assembly up the cylinder until the red LED on the
Home Cylinder Sensor lights. Tighten the Home Cylinder Bracket Assembly.
19. Return the system to normal operating mode.
REPLACING THE EDGE SENSOR
1. Turn the PA/4000’s power switch to the OFF position.
2. Open the Electrical Box Assembly.
3. Locate and remove the 6 wire cable connected to J2 of the Front Panel PCB.
4. Locate the Phillips head screw that secures the Adjustment Screw Bracket to the
PA/4000. Loosen, but do not remove, the screw.
5. Locate and remove the E-clip, retaining washer, and spring washer from the end of
the Sensor Shaft.
6. Rotate the Sensor Shaft counter-clockwise until the sensor assembly comes free
from the shaft.
7. Now the sensor and shaft can be removed from the PA/4000.
8. Re-assemble the Label Edge Sensor components in reverse order as above.