Circuit Diagram(Main 2/4) - Roland BOSS BR-1180 Service Notes

MAY.2002

CIRCUIT DIAGRAM(MAIN 2/4)

fig.main2-c
L1
NIU
JK1
2
4
GUITAR/BASS 3
1
LGR4609-7000
A
JK2
NC3FAH
A
C38 C29
47/50 47/50
L2
JK3 NIU
MIC 2 2
4
7 L3
3
1
NIU
HLJ4306-01-3080
A
JK4
NC3FAH
A
C65 C56
47/50 47/50
MIC 1
JK6
2
4
7
3
1
HLJ4306-01-3080
A
JK5A
YKC21-3282
12
L
LINE IN
22
R
11
R86
100k
A A
JK5C
YKC21-3282
A
26
TO SWITCH BOARD
CN105
+
C10
R8 0.1 R257 10k
2 Q1
2SK184GR
10k R258 10k
C14
C13 R9 2
C15
-
100p 1
1M
10/16
3
+
+ R12 IC4A
A
M5218AL 10/16
10k
R13
4.7k
A
R14 C19
4.7k 10/16 6
-
7
5
+
IC4B
A
M5218AL
C22
R16 10/16
47k R19 33k
30dB_gain
A
C30 C31
R22
47/16 1k 10p
C32 R25
150p 47k 2
-
1
3
+
C37 R26
A
150p 47k IC11A
C39 M5218AL
R27
47/16 1k R28 33k
R29 6.8k(MF)1/2W
R30 6.8k(MF)1/2W
R50 6.8k(MF)1/2 W
R55 6.8k(MF)1/2 W R56 33k
C55
30dB_gai n
L8
NIU C58 10/16
C57 R57
L9 47/16 1k 10p
C60 R59
150p 47k
6
-
NIU 7
5 +
+
C61 R65
A
150p 47k IC11B R68
M5218A L 4.7k
C66 R71
47/16 1k R72 33k R73 C67
4.7k
10/16
A
R105 47k
C72 R78 47k
2
C74
-
1
10/16
3
+
C77 10/16
IC12A
M5218A L
10/16
R87
100k
A
R106 47k
R82 47k C86
+ 10/16
6
-
7
R95 5
+
4.7k
IC12B
M5218A L
R99 C88
4.7k 10/16
A
TO MAIN BOARD
CN113
CN103 CN104
14FE-ST-VK-N 18FE-BT-VK- N
+
L16
TSL0709_151u F +
C16
47/16
A
C24
47/16
R
L14
NIU
L C68
10/16
VR1A VR1B
EVJC25 50kA L15 EVJC25 50kA L15
C76
12 22
10/16
A
VR1C
EVJC25 50kA L15
A
C85
10/16
+
R103
4.7k
C93
10/16 R104
4.7k
A A
+ IC10C +
M5216L
-
C47 C48 C33
10/16
+
10/16 0.1
A A A
C92
47/16
A
C52 10/16 R51 R52 C53
R53 1k 1k 10/16
100k
Q9
1
RN1241
A
A
C62 10/16 R66 R67 C63
R69 1k 1k 10/16
100k
1 Q10
RN1241
A
A
C69
10/16
R75 4.7k R76 22k
C71 47p
C70
10/16
C75 100/16 R80
2
-
1
A
3
+
R83 220
IC10A C78 100k
R85 M5216L 150p
100k A
R88
330
R90 4.7k R91 22k
A
C82 47p
C81
10/16
6 C84 100/16 R93
-
A 7
5
+
R97 220
IC10B C87 100k
R98 M5216L 150p
100k
A
R100
330
A
IC4C IC11C IC12C
M5218AL M5218AL M5218AL
- - -
C34 C35 C36
0.1 0.1 0.1
+ + +
A A A
BR-1180
L6 JK5 B
NIU
YKC21-3282
32
L
R54 L7
100k NIU LINE OUT
42
A R
31
L15
SBT-0260TF
R70
100k
A
A
27