The Switch position 1 default set to ON. The print speed is fixed at 42.5 lines/sec.
Switch position 2 is usually set to OFF for use with 80 mm paper width. When the printer is installed with the 58 mm paper guide adaptor for use with the paper roll of 58 mm width, the switch should be set to ON.
Switch position 3 is usually set to OFF for ESC/POS command application that prints at 512 dots / line. Only technical users shall set this switch to ON and make the printer work in the 576 dots / line format.
SERIVCE SERIAL PORT
There is an extra 9 pin female D sub connector for
T31454