Power Board Ass'y - Roland CAMM-1 PRO CM-500 Service Notes

2 Electrical Section

2-3 POWER BOARD ASS'Y

POWER BOARD_1/2 Circuit Diagram
2
FROM MAIN
CN2
SERVO Mute/Live
1
VFC
2
3
PFC
4
5
MotorGainH/L
6
VFG
7
8
PFG
9
10
MtrSrc H/OFF
11 MHPOW
MtrSrc L/OFF
12 MLPOW
FanPWM Off/On
13 FAN
14
15
5483-15AX
+5 +5
U6C U6B
11 10 6 7
NJU201A NJU201A
+15
CP14
CE0.1u
CP15
CE0.1u
-15
14
C28
PO0.068u/50V
R23
3
10K
VR3 R16
+15
1.2K
1KVR
C20
PO4700p/50V
GainC
C51
No mount R67
C26
PO0.033u/50V
+15
3
+
R43 R44
U2A
1K 680
2
-
+15 V-
VFB
C24
VR1
PO0.1u/50V
10KVR
-15
R49
OfsetC
47K R45
100
-15
JP69 (No mount)
JP65
C29 PO0.068u/50V
R27
10K
R24
14
10K
C23
PO4700p/50V
VR4
1KVR R17
C52
No mount
1.2K
GainG
C27
+15
PO0.033u/50V
3
R46 R47 +
1K 680
2
-
+15 V-
VFB
C25
PO0.1u/50V VR2
10KVR
-15
R50
OfsetG
47K
R48
100
-15
-15
U2B
R69
5
+
7
4.7K
6
-
M5220L
U6A
D9 1SS130
2
D10
D5
1SS130
1SS130
NJU201A
R1 R32 R4 R100
1K1% 3.3K
10K2% 10K2%
PO0.022u/50V
R28
No mount R2 R3
2.2K
1K1%
1K1%
R51
100K
D23
CP5 CP7
No mount
R19
+15
CE0.1u CE0.1u
10K
+5
V+
D6
V+
1 3 U3A
R20
+
D12 C55 1SS130
D13 1
M5220L 2
- M5220L
10K
CP6 D11
CE0.1u V-
1SS130 CP8
CE0.1u
1SS130
1SS130 CE0.1u
-15
R72
No mount
+5
R33
4.7K
U6D +5
D16
D15
U3B
1SS130
15 1SS130
1SS130
5
D8
+ R21
7
6
NJU201A
-
10K
D14
C56
M5220L
CE0.1u 1SS130
R68
R22
U5B
No mount
10K
5
+
7
6
-
R70
M5220L
R52
100K
4.7K
D18 1SS130
CE0.1u
CP11
D17
D7
1SS130
1SS130
V+
U5A
R101
R5 R9
1 R6
3.3K
10K2% 1K1%
M5220L 10K2%
R7
R29
CP12 R8
CE0.1u 2.2K
1K1% 1K1%
D24
No mount
VREF
+15
CP1
CE0.1u
C14
PO0.01u/50V
3
FB
2
INV1
1 +5
NONI1
C11
8
C1
U7
C13 15 9 11
INV2 UPC494 E1
PO0.01u/50V
16 11
NONI2 C2
10 5
E2
4
DEAD
13 7
OC
R30 9
4.7K
R14
1K
R31
C15
4.7K
C9 C7
PO0.01u/50V +
C53
CE0.1u
220u/63V
CE0.22u
U9 74HC175
4 2
D1 Q1
3
Q1
5 7
D2 Q2
6
Q2
12 10
D3 Q3
11
Q3
13 15
D4 Q4
+5 14
Q4
Q1
9
DTA114EF
CLK
1
CLR
3
3
CP13
+5
CE0.1u
R18
10K
Q9
DTC114EF
OPEN:MUTEON
+15
CP2
CE0.1u
C17
PO0.01u/50V
3
FB
2
INV1
1 +5
NONI1
C12 C16
8
U8 C1
15 9 11
INV2 UPC494 E1
16 11
NONI2 C2
10 5
E2
4
DEAD
13
7
PO0.022u/50V OC
PO0.01u/50V
9
R15
R34
4.7K 1K
+ C10
C8
CE0.1u
C54
220u/63V
CE0.22u
VX
C1
CE0.022u
C3
R12
4 No mount
EN BOOT1 No mount
CN1
IN1
3
U10 OUT1 1
IN2 L6203 2
1
OUT2
5566-02A
VREF
8
BOOT2
C2 CE0.022u
D2
R10 D1
0.33/2W S2L20U
S2L20U
VY
C4
CE0.022u
C6
R13
No mount
4
EN BOOT1 No mount
CN9
IN1
3
OUT1 1
U11
IN2 2
L6203 1
OUT2 3
VREF 4
8 5566-04A
BOOT2
C5
CE0.022u
D3
D4
R11
S2L20U
0.33/2W
S2L20U