Head Temperature Detection Circuit; Oscillation Circuit - Brother PT-9200PC Service Manual

3.2.8

Head Temperature Detection Circuit

Fig. 3.2-9 shows the head temperature detection circuit.
The head temperature detection circuit uses the thermistor on the heat radiation
plate of the thermal head to convert variations in the temperature of the head into
variations in voltage to input them into the A/D input port AN1 of the CPU.
3.2.9

Oscillation Circuit

Fig. 3.2-10 shows the oscillation circuit.
This circuit contains a 14.74-MHz oscillator to generate an oscillation at 14.74 MHz.
The internal operations of the CPU are executed based on this clock.
Fig. 3.2-9 Head Temperature Detection Circuit
Fig. 3.2-10 Oscillation circuit
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