Chapter 4 Advanced Usage Self-test Mode You can check the following items using the self-test. • Product name • Firmware version • Product serial number • Interface type • Peripheral device information • Resident fonts • Maintenance counter information (head running length, number of times of autocutting) Follow the steps below. You can also run the self-test using the ESC/POS commands. 1 Close the roll paper cover. 2 While pressing the Feed button, turn on the printer. (Hold down the Feed button until printing starts.) After printing the current print status, a Continuing self-test guidance is printed, and the Paper LED flashes.
3 Briefly press the Feed button (less than one second) to continue the self-test. The printer prints a rolling pattern on the roll paper, using the built-in character set. After “*** completed ***” is printed, the printer initializes and switches to standard mode. 93