Roland AX-7

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9
11
AX-7
Nov, 2001
BLOCK DIAGRAM
DATA
BUFFER
SWITCH
MATRIX
CONTROL BOARD
RIBBON
UNIT
ENTRY
DISPLAY
Q9-Q13
45 KEY
KEYBOARD
X2
BR0-BR5
A1
16MHz
INT1
BATTERY
+5VD
P57
IC7
XINT
A0
XWR
P20-P27
IC1
X1
XRD
XIN
-
AN4
P33
P31
P55
CLK
P32
+
EEROM
RESET
MAIN BOARD
XOUT
RXD3
P36
TXD1 WP
SCK
IC8
P30
POWER SUPPLY
DC IN 9V
AN0-AN2
D0-D7
P00-P07
IC6
P56
IC21
XRES
IN
IC2
M38039MFFP
CPU
P10-P13
OUT
VBTY
DECODER
IC11
XCS
MK0-MK5
POWER SWITCH
3STATE
KEYSCAN
XOUT
AN6
SDA
PHOTO
BUFFER
IC10
10MHz
LATCH
T0-T7
P50-P52
BUFFER
D-BEAM
PHOTOC.
D-BEAM
CONTROL
HOLD
SWITCH
IC22
IC1
MIDI
MOD
LED
MATRIX
1 4
2
5 3 1
4
2
5 3
1
2
3
1 2
1 2