Casio SA-65 Service Manual

— 4 —
Amplifier/Voltage Regulator
(IC101: AN8053N)
The right figure shows the internal block of IC101.
16 9
SP AMP
–
+
VREF
5V REG
POWER
1 3456782
15 14 13 12 11 10
VCC NC CONT
5 V
VREG NC NC NC PRE GND
SPO NC SP GND PC-1 PC-2 SPI SPM VREF
Filter Block
Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.
AVDD
To power amp.
From CPU
AG
AG
Q101
2SC1740SR
C106 R105
R104
C108
R106

Casio SA-65 Specifications

General

Brand	Casio
Model	SA-65
Category	Electronic Keyboard
Language	English