Another key component for proper printing is the sensor. It is located inside the printer. Incorrect sensor positioning is a clear sign that printing is not being performed correctly.
Possible symptoms
Label misalignment with the paper
Printing blank labels
On-screen message: Define the roll correctly
Red status button
To avoid these situations, it is essential that the sensor is correctly positioned. To adjust it, you must first open the cover. Once opened, the sensor can be found at the bottom.
To position the sensor correctly, it must be moved until the arrows face each other, as shown in the following images:
TD-2125TD-4550
The following video shows how the sensor should be positioned correctly:
TD-4550DNBW
TD-2125DNBW
The key to correctly positioning the sensor is to hear a click when it is properly set. Adjust it until you hear the sound—this means the sensor is perfectly aligned.
If it still prints misaligned, do the following on the printer: Settings > Media > Calibration
Done! This correction confirms that the printing issue was caused by incorrect sensor positioning, a key component for proper label printing.