Main Pcb - Brother PT-2420PC Service Manual

2.2.2

Main PCB

Fig. 2.2-2 shows a block diagram of the main PCB. The main PCB consists of the following:
(1) CPU (including a ROM and RAM)
(2) SRAM (256-kilobyte)
(3) EEPROM (1-kilobit)
(4) USB interface circuit
(5) LED ON/OFF circuit, thermal head control circuit, and motor driver circuit
(6) Reset circuit
(7) Oscillator circuit
(8) Cassette sensor circuit and cutter sensor circuit
(9) Head property detector circuit
(10) Voltage detector circuit and ambient temperature detector circuit
(11) ON/OFF switch circuit
Fig. 2.2-2 Block Diagram of Main PCB
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