Block Diagram - Casio WK-3700 Service Manual

SUB PCB (M734-MA3M)
Phones/Output
CONSOLE PCB
(M734-CN3M)
Speakers
(L)
(R)
Main
Volume
CONSOLE PCB
(M734-CN2M)
LOUT
MAIN PCB
(M737-MD1)
uPD63200GS
Reset IC
RESET
IC8
R1151N001C-TR
EA0 ~ EA15, EA18
RAM (1Mbit)
IC4
CY62128VLL-70AZI ED12 ~ ED19
16.384MHz
KEY/BUTTON
SI0 ~ SI9,
CONTROLLER
FI0 ~ FI9
TC190C020AF-001
Keyboard
KC0 ~ KC3
Keyboard PCB
(JSM764T-KY1M/
KY2M)
CONSOLE PCB (M734-CN1M)
Buttons
SWIO ~ SWI7
SWCO ~ SWC6

BLOCK DIAGRAM

Assingnable Jack
MIDI
OUT
IN
LINE OUT
L R
Q207 D209
Power Amplifier
IC205
APO
LA4636
Filter
IC202, IC203
ROUT
DAC IC5
MPU
IC15
uPD914AGM-3ED
MA0 ~ MA3
IC20
MD0 ~ MD15
PWSW
RESB
TXDO
TXDI
BUTTON/LED
CONTROLLER
IC301
UPD65881GK-062-9ET
AC ADAPTOR
DC 12V
LCD PCB
(M734-LCD1M)
D201
Battery
Power Supply Circuit
Q201 ~ Q205,
IC201, D205
(9-12V) (5V) (5V)
VC VD5 VF5
MA0 ~ MA16, MA25
MA0 ~ MA13, MA25
MD0 ~ MD7
CONSOLE PCB
(M734-CN8M)
SYNTH HUMANIZER
CONSOLE PCB
DRAWBER
(M734-CN5M)
CONSOLE PCB
DSP ON/OFF
(M734-CN4M)
— 3 —
LCD Controller
ML9040-B02GA (IC401)
CONT
E
R/W
RS
(9-12V)
VCP
SUB PCB
(M734-MA2M)
FLASH ROM (32MBit)
MA0 ~ MA20
IC2
MD0 ~ MD15
LH28F320BFHPBTL70
ROM (128Mbit)
MA0 ~ MA21
IC36
MD0 ~ MD15
MR27V12800J137TN3D
RAM (2Mbit)
IC6
MD0 ~ MD7
LP62S2048X-70LLT/Q
FDD Controller
IC21
MD0 ~ MD7
ML6757GA-115
IC17
TC74LCX245FT
Smart media Unit 3.5" FDD Unit
DB0 ~ DB7