Roland HP 2700 - Playing Using Classical Tuning; Changing the Tonic

HP-3700/2700
Dec. 1990
SWITCH
BOARD
CIRCUIT
DIAGRAM/
SWITCH
-NOTE
SWITCH
BOARD
circuitry
is common to HP-2700
and
HP-3700.
But
assembly
number is
different
each other because
length of
wiring
connecting to board is different each
other.
SWITCH
tT:-
HP-2700
t
HP-3700
MAIN
BOARD
CN7
CN0
J
AMP .PS
BOARD
CN5
r
SWITCH
BOARD
KEY
TRANSPOSE
TEMPERA
MENT
PIAN01
PIAN02
HONKY
TONK
HARPSI
CHORD
VIBRA
PHONE
E.
PIANO CHORUS
TREMOLO
REVERB
ROOM
REVERB
STAGE
REVERB
HALL
VALUE
DOWN
VALUE
UP
DEMO
LED1 LED2
LEDS LED4
I I
LED1 . . .LED16=SLH34VC
D1
. . .D16=1S2473
D4
'
CN1
1
SRDO
2 SRD1
3 SRD2
4
SRD3
5
LWRO
6 LWR1
7
LWR2
B
LWR3
9 SCLO
10
SCL1
1 1 SCL2
12 SCL3
1
CN3
A -GND
A. GND
3
A. +5
4
VOLUME
5
BRILLIANCE
+5
LED5
D5
p
CM
SW5
LEDS
D6
P
o
SW6
LED7
D7
P
O-
SW7
LEDB
DB
£
LED
9
raW
—t
rasW
—f
rspKI
—
\
raW
—f
raKI
—f
raW
—f
raW
—t
raW
—f
raW
—f
rat^3
—f
paW
—f
raKl
—
f
pate]
—f
paW
—
j
—
f
paM—
t
SWB
D9
£
LED10
swg
D10
P
o—
SW10
LED1
1
D11
P
o-
SW1 1
LED
12
D12
P
0“
SW12
LED
13
D13
P
SW13
LED
14
D14
SW14
LED
15
D15
P
o-
SW15
< R6 < R
r 4^
R5
OK
LED
16
DIB
p"^
SW16
t
Q1
DTA1
14
Q2
DTA1
14
Q3
DTA1
14
Q4
DTA1
14
£
R3
OK
BRILLIANCE
1S2473X
VR1
019
10KB
C5
0.1
VR2
10KB
100
D.+5
4
CN2
1
T5TTS
2
D
.
+5
3
D .
+5
4
D .
GND
5
0
.
SND
6
D . GND
LI
-r
II
L2
—
j—
Cl 1
0.1
C3
Z^cio
47/
16V
m
D .
GND
m
0.1
C7
0.1
14