Block Diagram - Casio PX-700 Service Manual

MAIN PCB (M404-MDA1)
Reset IC
IC5
R1151N001C-TR
EA0 ~ EA15,EA18
RAM (1Mbit)
IC3
CY62128DV30LL
ED12 ~ ED19
16.384MHz
CONSOLE PCB
(M406-CNA3)
CONSOLE PCB (M406-CNA4)

BLOCK DIAGRAM

RESET
MPU
IC7
uPD914AGM-JED
DAC IC15
µPD63200GS-E1
LOUT
Filter
IC8, IC13
SUB PCB
(M404-PSA1)
(5V) (5V) (5V) (12V)
VI5 VA5 VD5 VA12
Power Supply Circuit
IC202,Q206,Q207,
D206,D207
D201
CONSOLE PCB
(M406-CNA2)
MA0 ~ MA16, 25
ROUT
Buttons
Main
Volume
CONSOLE PCB
Filter
IC205
(M406-CNA1)
Power Amplifier
IC201
LA4636
(L) (R)
Speakers
— 2 —
MA0 ~ MA20
RAM (1Mbit)
IC4
CY62128DV30LL
MD0 ~ MD7
MA0 ~ MA20
ROM (64Mbit)
IC1
MR27V6402G19RTN03D
MD0 ~ MD15
MA0 ~ MA3
KEY CONTROLLER
IC14
TC190C020AF-001
MD0 ~ MD15
Keyboard
Keyboard PCB
(MCPZ-KYA1/KYB2/KYA3)