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2.3 MAIN PCB
Fig. 2.3-1 shows the block diagram of the main PCB. The main PCB consists of the following
components.
(1) CPU (Including ROM and RAM)
(2) EEPROM (4Kbit)
(3) Power supply ON/OFF circuit, Feed button ON/OFF circuit, Cut button ON/OFF circuit, LED
ON/OFF circuit
(4) Head power supply ON/OFF circuit
(5) Full cutter motor driver circuit and Media feed motor driver circuit
(6) Media type detect sensor circuit, Media position detect sensor circuit and Cover open sensor
circuit
(7) Head temperature detect circuit
(8) Cutter home position detect sensor circuit
(9) Reset circuit
(10) USB interface circuit
Fig. 2.3-1 Block Diagram of Main PCB
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