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Jul, 1998
1
2
3
4
5
6
BLOCK DIAGRAM
A
B
C
D
E
PANEL BOARD
ASSY
[71017556]
F
SW & LED Matrix
VR Matrix
Decoder & Driver
G
HC4051
(IC2, IC4, IC6, IC8,
IC10,IC11)
HC138
H
(IC3, IC13)
HC273
(IC7)
AD Section
I
OP.AMP 4570
(IC1, IC5, IC9)
AD/DA PCM3001 (IC32)
2SC1815
J
(Q7-Q14)
RN2226
VCA M5241L
(Q1-Q6, Q15-Q22)
OP.AMP 4570
(IC48, IC46, IC51)
K
Sig / Limiter
Upper
Indicator
(Lower = D84)
L
(Upper = D85)
AMP
Gain +24.6dB
OP.AMP 4570
M
(IC44B)
Upper
N
Lower
Input Volume
(Lower = VR43)
(Upper = VR44)
O
Lower
P
Upper
Switching
Q
R
Mic Jack
(JK401)
S
MIC BOARD
T
ASSY
[71017589]
MIC. IN
VOCAL / UPPER
U
7
8
9
10
11
12
Card Connector
CN015S-3013-0
(CN202)
for 5V SmartMedia [2M or 4M]
CARD BOARD ASSY
[71017567]
Card Control
7W08, HC32, HC175
(IC38, IC41, IC42)
Bus Buffer
X' TAL 16MHz
HCT245 (IC40)
MA-406
(X1)
CPU
HD6413002FP
(IC7)
DA Section
8M bit FLASH ROM [70ns]
LH28F800SUT
(IC62)
Limiter
Lower
AMP
Gain +24.6dB
X' TAL 67.7376MHz
OP.AMP 4570
SG-8002DC
(IC44A)
(X2)
(Q7, Q9,
Q17, Q18, Q23)
Voltage
Voltage
Mic AMP
Follower
Follower
Gain +30dB
Gain 0dB
Gain 0dB
OP.AMP 4570
OP.AMP 4570
OP.AMP 4570
(IC50)
(IC43B)
(IC43A)
EXT. IN
EXT. IN
VOCAL / UPPER
INST / LOWER
(MONO)
13
14
15
16
17
18
LCD UNIT [16X2]
RCM7044U-1A
Vocal Morph Sig.
LCD I/F
ESP2 CHIP
HC74 & HC574
TC170C140
(IC3, IC4)
(IC17)
ESP2 CHIP
TC170C140
(IC18)
ESP2 CHIP
TC170C140
(IC19)
1M bit SRAM [70ns]
TC551001CFL
ESP2 CHIP
(IC11, IC13)
TC170C140
(IC20)
Memory Backup
CR2032 [3V]
ESP2 CHIP
(BT1)
TC170C140
(IC21)
To IC17 - 21
OSC IN
[67.7376MHz]
DAC
uPD63200GS
Divider (1/768)
To IC17 - 21
(IC36)
VHC163
SYNC IN
(IC59, IC60, IC61)
[2Fs=88.2kHz]
MIDI OUT
MIDI IN
Transmitter
Receiver
HD74LS05
PC410
(IC65)
(IC47)
MIDI OUT
MIDI IN
19
20
21
22
23
24
256Fs
To IC32 XT1 IN
64Fs
To IC32 BCKIN IN
4M bit DRAM [60ns]
HM514800DJ6Z
+5V
(IC63)
+15V
4M bit DRAM [60ns]
-15V
HM514800DJ6Z
(IC23)
Reset
M51953
4M bit DRAM [60ns]
(IC2)
HM514800DJ6Z
(IC24)
For Digital Reset
Reset
M51953
4M bit DRAM [60ns]
(IC52)
HM514800DJ6Z
(IC25)
For Analog Reset
Reset
M51953
4M bit DRAM [60ns]
(IC67)
HM514800DJ6Z
(IC64)
For IC32 Reset
Buffer
OP.AMP 4570
(IC37)
LPF & Buffer
OP.AMP 4570
(IC55)
Headphone AMP
OP.AMP 5218
REMOTE KBD IN
(IC56)
Receiver
PC410
(IC45)
MAIN BOARD ASSY
[71017534]
LINE OUT
REMOTE KBD IN
[L(MONO), R]
JP-8080
25
26
27
28
SW BOARD ASSY
[71017578]
AC IN
~
SWITCHING REGULATOR
KW1AA265
VOLUME BOARD
Master
Volume
(VR601)
PHONES BOARD
Phones
Jack
(JK501)
PHONES BOARD
ASSY
[71017590]
PHONES
OUT
13
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