Main Pcb; Block Diagram - Brother PT-2300 Service Manual

3.2

MAIN PCB

3.2.1

Block Diagram

Fig. 3.2-1 shows a block diagram of the main PCB. The main PCB consists of the following:
(1) CPU
(2) ROM (Masked)
(3) Key contacts matrix and solder points
(4) Power ON/OFF circuit and power saving circuit
(5) DC motor driver circuit
(6) Cutter motor driver circuit
(7) Thermal head drive circuit
(8) Voltage detector circuit and temperature sensor circuit
(9) Cassette sensor circuit
(10) Cutter sensor circuit
(11) Oscillator circuit
(12) Reset circuit
(13) LCD driver circuit
(14) USB interface circuit
Fig. 3.2-1 Block Diagram of Main PCB
III-2