Casio AP-10 Service Manual page 11

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POWER SUPPLY CIRCUIT
The power supply circuit generates five voltages as shown in the following table.
Name Voltage
VDD
+5 V
CPU, Reset IC, DSP, Sound source ROM, Working storage RAM, Effect RAM, LEDs
AVDD
+5 V
DAC
LVDD
+5 V
Power lamp
AVCC +12.5 V
Filter
VC
V
Power amplifier
For operation of
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