Main Pcb; Block Diagram; Cpu - Brother PT-530 Service Manual

3.2 MAIN PCB

3.2.1

Block Diagram

Figure 3.2-1 shows a block diagram of the main PCB. The main PCB consists of the following:

(1) CPU

(2) ROM
(3) RAMs (SRAMs)
(4) Key contacts matrix
(5) Power ON/OFF circuit and automatic powering-off circuit
(6) Motor driver circuit
(7) Cassette sensor circuit
(8) Cover sensor circuit
(9) Leading-edge sensor circuit (PT-550 European versions only)
(10) Thermal print head control circuit
(11) Cutter sensor circuit
(12) Voltage detector circuit and temperature sensor circuit
(13) Oscillator circuit
(14) Reset circuit
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