Main Pcb - Brother PT-2500PC Service Manual

3.2 MAIN PCB

Fig. 3.2-1 shows a block diagram of the main PCB. The PCB consists of the following
components:
(1) CPU (including the ROM and RAM)
(2) SRAM (32-kilobyte)
(3) EEPROM (1-kilobit)
(4) Power ON/OFF circuit, thermal head control circuit, FEED/CUT switch ON/OFF
circuit, and LEDs ON/OFF circuit
(5) Cutter motor drive circuit and tape feed motor drive circuit
(6) Cassette sensor circuit, cover open sensor circuit, cutter sensor circuit, and tape end
sensor circuit
(7) Head property detection circuit
(8) Head voltage detection circuit and ambient temperature detection circuit
(9) Oscillation circuit
(10) Reset circuit
Fig. 3.2-1 Block Diagram of the Main PCB
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