Self-test Mode You can check the following items using the self-test. • Product name • Firmware version • Product serial number • Interface type • Resident fonts • Maintenance counter information (head running length, number of times of autocutting) • Setting condition of the DIP switch 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 Power 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. Prints the following NV graphic information registered to the printer. • Capacity of the NV graphics • Used capacity of the NV graphics • Unused capacity of the NV graphics • Number of NV graphics that are registered • Key code, number of dots in X direction, number of dots in Y direction to be defined. • NV graphics data For details on NV graphics, see "NV Graphics Memory" on page 24 . 70 NV Graphics Information Print Mode