Intermec PF4i PF2i and PF4i Mid-Range Printer User's Manual - Page 121

Chapter 4 - Troubleshooting and Maintaining the Printer 3 Loosen the nut that secures the pressure arm. Center of media Screw Pressure arm 4 Move the pressure arm inward or outward until the arrow on the tip of the arm is centered with the media. Note: Move the pressure arm at the part closest to the screw, not at the tip. If the arm is difficult to move, lift the printhead and pull the printhead bracket free from the magnet in the arm. 5 When the pressure arm is centered, tighten the nut to secure the arm. 6 Adjust the edge guides. Adjusting the Label Stop Sensor The label stop/black mark sensor (LSS) is a photoelectric sensor that controls the printer's media feed by detecting gaps between labels, or slots or black marks in continuous stock, depending on the printer's media type setup. The LSS must be aligned with the gaps, slots, or black marks. If you are using irregularly shaped labels, align the LSS with the front tips of the labels. One part of the sensor is on the upper media guide and the other part of the sensor is under the lower guide. You need to adjust the guides individually to the same position. PF2i and PF4i Mid-Range Printer User's Manual 107