Block Diagram - Roland A-37 Owner's Manual

Sept, 2001
1 2 3 4 5 6

BLOCK DIAGRAM

A
B
C
D
E
JACK BOARD
SUSTAIN
F
SWITCH
2
3
1
G
EXPRESSION
PEDAL
2
3
H
1
I
J
K
L
M
IN
IC1
N
2 PHOTO
OUT1
O
2
P
OUT2
2
Q
THRU
R
2
S
T
U
7 8 9 10 11 12
CPU BOARD
IC2
M38039FFFP
AN0-AN2
16MHz
XIN P10-P13
X1
XOUT XOUT
IC7
P20-P27
RESET XRES P50-P52
INT1
P30
P31
AN4
P32
P33
P36
IC9
AN5 AN5
AN3 P00-P07
CPU
RXD3
TXD1 WP
P57
SDA
P56
SCK
P55
TXD3
IC12
AFT
13 14 15 16 17 18 19
IC10
XINT
A0
A1
XRD
CLK
XWR
XCS
KEYSCAN
LATCH
IC6
MK0-MK9
BR0-BR9
3STATE
D0-D7
BUFFER
T0-T7
IC5
EEROM
76 KEY
KEYBOARD
20 21 22 23 24 25
BEND-MOD
UNIT
CONTROL BOARD
DATA
ENTRY
IC3
LED
MATRIX
10MHz
IC2
X2
Q1-Q4
BUFFER
POWER SUPPLY BOARD
VBTY
DC IN 9V
POWER SWITCH
+ -
1 1 2
2
3
POWER SUPPLY
1 2
BATTERY
A-37
26 27 28 29 30
DISPLAY
SWITCH
MATRIX
+5VD
9