Roland CAMM-1 PRO CM-500 Service Notes page 17

MAIN BOARD_3/3 Circuit Diagram
U19
D6 3
D4 4
D2 7
D0 8
D1 13
D3 14
D5 17
D7 18
11
PENFRC
1
74HC273F
PENPH
A[0..21]
A[0..21]
D[0..15]
U12D
8
RUN
74LS14
/SRVCS
/RD
/WR
/INTSRV
/SRVINTV
/RESET
+5
U20
R7
4 3
+5 OUT
2 1
GND NC 0
SG531T 49.152MHz
+5
RA22 U17
1 8 2
1 8 A1 Y1
2 7 3
2 7 A2 Y2
3 6 4
3 6 A3 Y3
4 5 5
4 5 A4 Y4
6
A5 Y5
MNR34J5A102 C32 C29 C30 C31 7
A6 Y6
8
A7 Y7
CE1000p
9
A8 Y8
1
CE1000p CE1000p
G1
19
CE1000p
G2
74LS541
RA15
MNR34J5A330
+5
CN12 CN13
IL-G-6P-S3T2-E IL-G-7P-S3T2-E
2 DA6
D1 Q1
5 DA4
D2 Q2
6 DA2
D3 Q3
9 DA0
D4 Q4
12 DA1
D5 Q5
15 DA3
D6 Q6
16 DA5
D7 Q7
19 DA7
D8 Q8
CLK
CLR
RA23
DA7 1 16
M O
VR2
DA6 2 15
R44
DA5 3 14
20KVR 100K
DA4 4 13
DA3 5 12
DA2 6 11
DA1 7 10
C47
DA0 8 9
L G
CE1000p
EXBM16D8AL
MB621876
U23
A1 81 P19
A0
A2 82
A1
TP19
A3 83 1
CWX
A2
TP20
A4 84 2
A3 CCWX
A5 85 5
ECWX
A4
A6 86 6
ECCWX
D[0..15] A5
7
RNGX
8 TP23
OVRX
D0 68
D0
D1 69 9
D1 XCA
P23
D2 70 10
D2 XCB
D3 71 11
D3 XCC
D4 72 12
D4 XCD
D5 73
D5
9 D6 74 13 DX0
D6 XP0
D7 75 14 DX1
D7 XP1
16 DX2
XP2
17 DX3
XP3
76 18 DX4
CS XP4
66 19 DX5
RD XP5
67 20 DX6
WR XP6
87 21 DX7
INT XP7
77 22 DX8
ITA XP8
64 23 DX9
RSTI XP9
24 DX10
XPA
25 DX11
XPB
80 26
CKI XPC
+5 27
XPD
R20
30
XPE
31 P16
10K
XPF
91
RNO
92
RNI
57 TP16
CWY
18 xpha xpha 99 58
XPHA CCWY
xphb
17 xphb 100 59
XPHB ECWY
16 ypha ypha 61 60
ECCWY
YPHA
15 yphb yphb 62 32
P26
YPHB RNGY
14 P25 33 TP29
OVRY
13 TP26 88
CNST
12 TP25 89 34
ACC YCA
P29
11 94 35
UCK YCB P28
95 36
DDACK YCC
63 37
TEST YCD
96
MUX
97 38 DY0
MUY YP0
98 39 DY1
MUTE YP1
R21
41 DY2
YP2
10K 93 42 DY3
HEXMD YP3
43 DY4
YP4
44 DY5
YP5
45 DY6
YP6
46 DY7
YP7
47 DY8
YP8
48 DY9
YP9
49 DY10
YPA
50 DY11
YPB
51
YPC
+5 52
YPD
55 2
YPE
56
R22 YPF
R15239219
MBCG10692
10K
+5
R4
470
D9
SEL-6414E
TR2
DTC114EF
3 2
B C
+5
VR1
1KVR
P12
+5
U25B
R40
BA10324A
100K U25A
BA10324A
5
R45
7 3
6 1
8.2K R39 2
100K
C48
PO0.01u/50V
No-Mount (1K)
+AV5 PC23
P20 P21
P22
CE0.1u
U28
ECWX DX11 1
B1
ECCWX DX10 2
B2
RNGX DX9 3
B3
DX8 4 22
B4 IBPO
DX7 5
B5
DX6 6 21
B6 IOUT
P24
DX5 7
B7
DX4 8 19
B8 SJ
DX3 9
B9
DX2 10 18
B10 RFB
DX1 11
B11
DX0 12 17
B12 VOUT
13
B13
14
B14
15
B15
16
B16(LSB)
PCM55
PC22
-AV5 CE0.1u
P15
P18
+AV5 PC24
P17
CE0.1u
TP15
ECWY U29
ECCWY DY11 1
B1
RNGY DY10 2
B2
D7B
DY9 3
D7A
B3
DY8 4 22
DA227
DA227 B4 IBPO
DY7 5
B5
DY6 6 21
B6 IOUT
DY5 7
B7
DY4 8 19
B8 SJ
DY3 9
B9
DY2 10 18
B10 RFB
DY1 11
B11
DY0 12 17
B12 VOUT
13
B13
14
B14
15
B15
16
B16(LSB)
PCM55
PC25
3
C B
-AV5 CE0.1u
TR1
DTC114EF
+5
U31
MTD2005
25
VMMA
VCC
3
ALM VMMB
5
OUT1
R56 PHA
23
PHB OUT2
24
10K
DECAY OUT3
C55
OUT4
R57
CE0.01u 2.2K
6
ENA A LG A
R58 22
ENA B LG B
8.2K
NC
2
VREFA NC
26
VREFB NC
4
CR NC
1
VSA VSB
C56
R60
4700p
10K
R37
R59
1Ω 1/2W
+AV5 PC26
CE0.1u
V+ U30A
R48 2.2K
3 M5220L
+
1
R49 2.2K
2 -AV5
-
V-
C50
R50
C49
CE2200p CE2200p
47K
R51 47K
PC27
-15 CE0.1u
P14
U30B
R52 2.2K
5 M5220L
+
7
R53 2.2K
6
-
C52
R54
C51
CE2200p CE2200p
47K
R55 47K
P13
SRVSRCH
C41
SRVSRCL
FAN
CE0.01u
D5B
D5A
DA227
DA227
+5
R41
Carr-Motor Gain
No-Mount(0)
Grit-Motor Gain
P27
2 Electrical Section
+40
100K
R43
8
20
10
SOL-
12
C46
14
CE1000p 2
18
SOL+
7
21
9
15
16 D6
D1FL20U
19
D8
27 D1FL20U
U7
AN79M05F
3 2
VO VI
-15
PC34 PC35
CE0.1u CE0.1u
CN14
SERVO MUTE
1
VFC
2
3
PFC
4
5
6
VFG
7
8
PFG
9
10
SRVSRCH
11
SRVSRCL
12
FAN
13
14
15
5483-15A
13