12
TTP-243 Plus/ 243E Plus/
342 Plus Bar Code Printer
3. ELECTRONICS
3.1 Circuit Description
Fig. 3.1 MCU Circuit Diagram
The above is the MCU circuit diagram.
The main board includes seven system blocks:
A: MCU & Decode System
B. Memory System
C. Motor System (stepping motor, DC motor and cutter block)
D. Print head System
E. Communication System (serial & parallel port block)
F. Sensor & Key System