Gap/Black Mark Sensor Calibration, Self-Test, And Entering Dump Mode - Brother TJ-4420TN User Manual

6.1.2 Gap/Black Mark Sensor Calibration, Self-Test, and Entering Dump Mode

Calibrate the Gap or Black Mark Sensor if the sensor's settings used in the last print job are not
suitable for the current print job. During the calibration of the Gap/Black Mark Sensor, the printer
detects the label length, prints the internal configuration (self-test), and then enters Dump Mode.
To calibrate the Gap/Black Mark Sensor:
1. Turn off the printer.
2. Press and hold the right Selection button, and then turn on the Power Switch.
3. Release the button when Self-test appears on the screen.
Note
The LED color will change as follows:
Amber (lit)  red (5 times)  amber (5 times)  green (5 times)  green/amber (5 times) 
red/amber (5 times)  green (lit)
4. The printer calibrates the sensor and detects the label length, prints the internal settings,
and then enters Dump Mode.
Note
To select the sensor for calibration, send the correct command to the printer:
For the Gap Sensor: send the GAP command

For the Black Mark Sensor: send the BLINE command

For more information about the available commands, see the FBPL Command Reference on
your model's Manuals page at support.brother.com.
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