Chapter 1 Product Overview Part Names and Functions Roll paper cover Control panel ( 3 ) Cutter cover Cover open lever 1 Power switch cover ( 2 ) Manual cutter Power switch ( 1 ) 1 Power Switch Turns the printer on or off. The marks on the switch: ( : OFF/ : ON) Before turning the printer off, it is recommended to send a power-off command to the printer. If you use the power-off sequence, the latest maintenance counter values are saved. (Maintenance counter values are usually saved every two minutes.) For information about ESC/POS commands, see the ESC/POS Quick Reference or the ESC/POS Application Programming Guide.
2 Power Switch Cover Install the power switch cover that comes with the TM-T20 onto the printer to prevent inadvertent operation of the power switch and to prevent tampering. To reset the printer when the power switch cover is installed, insert a long, thin object (such as the end of a paper clip) into the hole in the power switch cover and press the power switch. A waterproof cover for the power switch is also included. If an accident occurs with the power switch cover attached, unplug the AC cable immediately. Continued use of the printer may cause fire or shock. WARNING Use the power switch waterproof cover if the printer is installed in a humid location or exposed to water.
If current leakage occurs, it could result in electric shock. 15