Brother P-touch PT-210E Manuale di servizio - Pagina 16
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Electronics
3.2.8
Oscillation Circuit
Fig. 3.2-14 shows the oscillation circuit.
This circuit contains an oscillator and generates an oscillation at 20 MHz which act as
the CPU basic clock. The CPU divides this into half (10 MHz) to synchronize its
internal operations.
3.2.9
Reset Circuit
Fig. 3.2-15 shows the reset circuit. If the +5BV drops abnormally, this circuit prevents
the CPU from operating erroneously.
Fig. 3.2-14 Oscillation Circuit
Fig. 3.2-15 Reset Circuit
III - 6
P-touch
SERVICE MANUAL