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BLOCK DIAGRAM
MPU
ML6556
IC202
LCD
Power Supply Circuit
Q201 ~ Q203, D204
Power Amp.
LA4227
IC201
Speaker
(L)
Speaker
(R)
Phones/Output
VC
AVDDVCC DVDD
APO
KOD8 ~ KOD12
DC + 9 V IN
DB4 ~ DB7
LCD-E
LCD-RW
LCD-RS
KID0 ~ KID6
Buttons
KI0 ~ KI6
Keyboard
Power Switch