Roland groovebox MC-303 Service Notes page 19

MC-303
May.
1
996
CIRCUIT
DIAGRAM/EH&I1(PANEL)
SR SR
A
ETNTG
NNONN
DRLLD
DD
VVVVVVV
+ G
R RR
RRR
R
5N
2345676
V D
DX5
CN3
51048-0500
REM5
SW18
TAP
77?0
TAP
ENC1
ENC2
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SDO
DIR
rll-
RKO9L120
777q 77?D
0987654321
C15
1
10/ 16
7t?o
SOURCE DRIVER
(LOW
INPUT ACTIVE)
12 R02
I 1
D 01
RK09L1 14
10/16
7t7d
10/
16
DX5
H
5104B-1200
7t7q
03 0.1
7t7d
DX5
A7
C
B7
A6 C B6
F G
G
N
DIR
D
7t7d
LED (HiZ)
SW (A<-B)
11 V 01
12 C 02
Ik
18
^
IC2
TD62384AP
7t7u
SINK DRIVER
CLOW INPUT ACTIVE)
D£5
o. 1
C2
IC4
TD62384AP
777*0
3
9 2
= 10 3
>11 4
>12 5
?13 6
?
14 7
15 8
11 V 01
12 C 02
IC5
74HC138
PANEL BOARD
ASSY
70788623
(PWB
01013256)
7f7u
10/16
7t7d
10/ 16
7t?q
7f7o
1
CI/
1
6
7t7d
Tt7o
10/ 16
777
o
777d
10/ 16
mu
D35
SW36
D2 4-
SW2 T
RTHM MUTE
^2
KEY
(2)
D31
SW33
PART MUTE
D23
SW25
PLAY MODE
SW1
SHIFT
PORTAMENT
D51
SW52
D25
SW29
2£
iBb ffl
5
IIli
Eli
Hk IE
2
151914
AAA BBB
12 3
i23
COM1A
C0M1B
COM2
COM3
FFF GGG DDD
123 123 PPP
1
23
RIGHT SIDE
^
51116
UlO|5 UlBP
I2I7I1 11 IS IQ
/7l,
2 |5|9|4
FFF GGG DDD
123 12
3
PPP
1
2 3
COM2
COM3
LEFT SIDE
ENVELOPE
OCTAVE
+
^2
KEY
(5)
5 (TOM/PC)
D20-
SW22
'
m
^
SW9
J-o^o 2
—
KEY
(8)
LED59
*2
^
LED40
^"2j
1^^ <^
PART SEL
W
LED24
m^
•w
w
^
w
RTHM MUTE
i^K
^
^
^
LED33
*®
PART MUTE
W
LED58
^2
^
TRANSPOSE
*3F
LED1
1
^
LED51
-*2
PORTAMENT
W
LED44
~-»-*2
^F
LED31
^
LED12
»,»2
i^.
^
^
o^
W
^
LED 18
^
LED29
^2
^
LED5S
*-*2l
i^>2j ,^g£
^
LED22
^2
^
W
KEY
(10)
KEY (11)
KEY
(12)
KEY
(13)
v
—
y
I
m\
W
LED47 ~
^2
^
RPS
SET
^
LED54
*2
m
w
7
(OTHERS)
LED26
*2
^
S TEP REC
W
LED16
—
!^2
W^
KEY (12)
KEY
(13)
KEY
(14)
KEY
(15)
KEY
(16)
KEY
(9)
LED1-16
:
SLR-55VC
LED24
:
SLR-55MC
(green)
LED29
:
SLR-325MC (green)
LED17-20. 35-39, 54-57
:
LNJ282RKRXE
OTHER LED
:
SLR-325VC
777d
19