Casio FE-700 MEX - 6 Circuit Explanation; Power Supply Circuit

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6.CIRCUIT EXPLANATION
6-1. Power supply circuit
Q1 : Power transistor
Q2 : Voltage detection transistor
Voltage level at above check point (unit : V )
Measurement
position
AB CD
Voltage (V) 12.5V 5.3V 6.2V 2 .47V
A
B
C
D