Sticker Printer Peel-Off Sensor Adjustment

Use this procedure when the sticker printer continuously reports that the peel-off sensor is covered and will not feed the next label, even though no label or liner is blocking the sensor. A slightly misaligned sensor board can aim the sensor too high and create a constant blocked indication.

Before opening the printer

1. Remove any label, liner, adhesive, or debris from the peel-off sensor area.
2. Restart the printer once and confirm that the blocked indication returns.
3. Disconnect printer power before removing the covers.
4. Photograph the cover and cable locations if this is the first time the printer has been opened.

Remove the outer cover

Step 1: Remove the three side-cover screws shown below.

Step 2: Open the flip-up door on the opposite side and remove the single screw underneath it.

Step 3: Carefully remove the outer cover. Do not pull on any internal cable.

Access the sensor board

Step 4: Remove the screw circled below. This allows the front plastic section and LCD assembly to tilt forward for access.

Adjust the peel-off sensor

Step 5: Loosen the four sensor-board screws circled below. Rotate the complete green PCB slightly clockwise, then retighten all four screws evenly. The required movement is small—typically about 1/16 inch—and is intended to lower the sensor’s aim.

Do not force the board, enlarge the mounting holes, or allow the PCB to contact another component. If the board cannot move slightly with the four screws loosened, stop and contact Enventek Support.

Reassemble and test

1. Return the LCD and front plastic section to their original position and reinstall its screw.
2. Reinstall the outer cover using every screw removed during disassembly.
3. Reconnect power and allow the printer to start.
4. Confirm that the peel-off sensor no longer shows a constant blocked condition when the path is clear.
5. Feed or print several labels and verify that each label is detected and the next label advances correctly.

If the indication remains blocked, disconnect power and inspect the sensor cable and connector. Contact Enventek Support before rotating the board farther or replacing components.