— 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
Summary of Contents for WK-3800
Page 1: ...ELECTRONIC KEYBOARD WK 3800 JUL 2006 WK 3800 INDEX...
Page 8: ...6 PRINTED CIRCUIT BOARD MAIN PCB M740 MDA1 Top View Bottom View...
Page 9: ...7 SUB PCB M740 PSA1 Top View Top View SUB PCB M740 PSA2...
Page 10: ...8 DISPLAY PCB M734 LCD1M Top View...
Page 12: ...10 KEYBORD PCB M764T KY1M KEYBORD PCB M764T KY2M...
Page 27: ...25 SCHEMATIC DIAGRAMS MAIN PCB M740 MDA1 1 2...
Page 28: ...26 MAIN PCB M740 MDA1 2 2...
Page 29: ...27 SUB PCBs M740 PSA1 PSA2...
Page 30: ...28 CONSOLE PCB M740 CNA1...
Page 31: ...29 CONSOLE PCBs M740 CNA2 CNA3 CNA4 CNA5 CNA6...
Page 32: ...30 DISPLAY PCB M734 LCD1M...
