Casio WK-3800 Service Manual

— 3 —
BLOCK DIAGRAM
CONSOLE PCB
(M740-CNA1)
Keyboard PCBs
(M764T-KY1M/
KY2M)
SUB PCB
(M740-PSA1)
MAIN PCB
(M740-MDA1)
LCD PCB
(M734-LCD1M)
CONSOLE PCB
(M740-CNA5)
CONSOLE PCB
(M740-CNA4)
CONSOLE PCB
(M740-CNA6)
RAM (1Mbit)
IC5
CY62128DV30LL
Reset IC
IC6
R1151N001C-TR
RESET
16.384MHz
EA0 ~ EA15, EA18
ED12 ~ ED19
A1 ~ A17
D0 ~ D15
Assingnable Jack
DAC IC1
uPD63200GS
Power Amplifier
IC205, LA4636
Power Supply Circuit
Q201 ~ Q204,
IC201, D205, D206
(9-12V)
VC
APO
Battery
Speakers
(L)
(R)
Phones/Output
LOUT
CONT
E
R/W
RS
ROUT
(5V)
VF5
(5V)
VA5
(5V)
VD5
(9-12V)
VCP
FLASH ROM (32MBit)
IC11
LH28F320BFHE
RAM (2Mbit)
IC7
LP62S2048X-70LLT/Q
ROM (128Mbit)
IC10
MR27T12800LO
LCD Controller
ML9040-B02GA (IC401)
D214
D201
Smart media Unit
MA0 ~ MA20
MA0 ~ MA21
MA0 ~ MA16, MA25
CONSOLE PCB
(M740-CNA2)
SUB PCB (M740-PSA2)
CONSOLE PCB
(M740-CNA3)
MD0 ~ MD15
MD0 ~ MD15
MD0 ~ MD7
MPU
IC13
uPD914AGM-JED
DRAWBER
DSP
Main
Volume
KC3 ~ KC7 FI10, KI0 ~ KI2
DB0 ~ DB7
SWCO ~ SWC6
SWIO ~ SWI7
PWSW
RESB
TXDO
TXDI
ARXD, ATXD, ZX-BUSYB,
SYSRSTB, BEND, MOD
BUTTON/LED
CONTROLLER
IC301
UPD65881GK-1019ETA
Buttons
SI0 ~ SI9, FI0 ~ FI9
KC0 ~ KC7
DATA ACCESS
KEY/BUTTON/SD CARD
CONTROLLER
IC20
TC190C020AF-001
RAM (128 x 16bit)
IC23
LP62S16128BV
AC ADAPTOR
DC 12V
Keyboard
FDD Controller
IC21
ML6757GA-115
3.5" FDD Unit
MA0 ~ MA13, MA25
MD0 ~ MD7
LINE OUT
L R
Filter
IC204, NJM2008D
Filter
IC204, NJM2008D

Casio WK-3800 Specifications

General

MIDI-keyboard number of keys	76 keys
Interface	USB
DC-in jack	Yes
Product color	Silver

Weight and Dimensions

Weight	10000 g