BBK SP550S, Руководство по обслуживанию

Страница: 7 / 14

5
DETAILED CIRCUIT EXPLANATIONS
SP550S SERVICE MANUAL
SCHEMATIC DIAGRAM OF THE MAIN POWER AMPLIFYING BOARD
V
in
1
GN D
2
V
o
u
t
3
N
4
0
1
7
8
0
9
V
D
4
0
1
~
V
D
4
0
4
R
L
2
5
4
C
4
3
8
2
.2
u
/1
6
V
R
4
5
0
2
2
k
A
+
1
8
V
A
-1
8
V
R
4
5
2
2
2
k
R
4
5
1
1
.5
k
C
4
3
9
2
2
u
/2
5
V
C
4
4
0
1
0
4
R
4
5
3
1
0
C
4
1
4
4
7
u
/1
6
V
R
4
5
4
2
2
k
A
+
1
8
V
A
-1
8
V
R
4
5
6
2
2
k
R
4
5
5
1
.5
k
C
4
4
1
2
2
u
/2
5
V
C
4
4
2
1
0
4
R
4
5
7
1
0
R
4
5
8
2
2
k
R
4
0
3
1
8
0
1 2
5 3
4
-
+
N
4
0
8
L
M
1
8
7
5
1 2
5 3
4
-
+
N
4
0
7
L
M
1
8
7
5
1 2
5 3
4
-
+
N
4
0
9
T
D
A
2
0
0
3
C
4
4
4
4
7
0
u
/2
5
V
R
4
6
0
4
7
R
4
6
1
2
2
0
R
4
6
2
2
.2
C
4
5
9
3
3
p
C
4
4
6
2
2
0
u
/2
5
V
C
4
3
4
2
.2
u
/1
6
V
C
4
5
6
1
0
4
R
4
6
3
1
0
C
4
4
5
1
0
4
O
U
T
1
1
O
U
T
2
2
O
U
T
3
1
5
O
U
T
4
1
4
IN
1
4
IN
2
5
IN
3
1
2
IN
4
1
1
S
V
R
6
PG
8
SG
9
C.D
10
S-B
7
Vc c
13
Vc c
3
N
4
1
0
T
D
A
7
3
7
0
B
C
4
5
1
4
7
u
/1
6
V
C
4
5
5
2
2
0
u
/2
5
V
C
4
5
4
2
2
0
u
/2
5
V
C
4
5
3
2
2
0
u
/2
5
V
C
4
5
2
2
2
0
u
/2
5
V
F
L
4
0
2
T
4
A
L
2
5
0
V
F
L
4
0
1
T
4
A
L
2
5
0
V
1 2 3
X
S
1
3
P
IN
C
4
0
3
4
7
0
0
u
/2
5
V
C
4
0
4 4
7
0
0
u
/2
5
V
C
4
1
1
4
7
0
0
u
/2
5
V
A
+
1
8
V
B
+
1
8
V
A
-1
8
V
B
+
1
8
V
A
+
1
8
V
C
4
5
8
1
0
4
C
4
0
5
1
0
4
C
4
0
6
1
0
4
C
4
1
2
2
2
0
u
/1
6
V
C
4
0
7
4
7
0
u
/1
6
V
C
4
0
8
4
7
0
u
/1
6
V
C
4
1
3
1
0
4
V
D
4
1
1
5
.1
V
+
5
V
+
9
V
V
D
4
1
0
1
2
V
V
D
4
0
9
1
2
V
R
4
0
1
2
2
0
/0
.5
W
R
4
0
2
2
2
0
/0
.5
W
+
1
2
V
-1
2
V
C
4
0
1
2
2
4
C
4
0
2
2
2
4
R
4
1
5 4.
7
k
R
4
1
6
2
2
k
R
4
2
2
2
2
k
R
4
2
4
4
.7
k
R
4
2
5 4
.7
k
R
4
2
6
2
2
k
C
4
1
7
2
0
p
C
4
1
8
2
0
p
C
4
1
5
1
0
u
/1
6
V
C
4
3
2
1
0
u
/1
6
V
C
4
2
6
2
.2
/1
6
V
C
4
3
1
2
.2
u
/1
6
V
1 2 3 4 5 6 7
X
S
5
7
P
IN
IN
1
1
IN
2
2
IN
3
3
C
O
D
E
2
4
D
G
N
D
5
S
C
L
6
S
D
A
7
IN
4
8
IN
5
9
IN
6
1
0
O
U
T
1
2
0
O
U
T
2
1
9
O
U
T
3
1
8
C
O
D
E
1
1
7
V
c
c
1
6
R
E
F
1
5
G
N
D
1
4
O
U
T
4
1
3
O
U
T
5
1
2
O
U
T
6
1
1
N
4
0
3
P
T
2
2
5
8
D
R
E
M
O
T
E
G
4
0
1
4
M
1 2 3 4 5 6 7 8 9 1
0
1
1
1
2
X
S
3
1
1
P
IN
R
4
0
6
1
.5
k
R
4
0
5
6
8
0
R
4
0
7
1
.5
k
R
4
0
8
1
.5
k
R
4
0
9
1
.5
k
R
4
1
0
1
.5
k
R
4
1
1
1
.5
k
R
4
1
2
1
.5
k
V
s
C
4
1
6
1
0
4
R
4
0
4
1
0
k
R
4
6
4
1
0
0
k
C
4
5
7
1
0
u
/1
6
V
C
4
4
9
2
2
4
C
4
4
7
2
2
4
C
4
4
8
2
2
4
C
4
5
0
2
2
4
+
9
V
R
4
5
9
2
2
k
R
4
2
1 4
.7
k
R
4
1
9
4
.7
k
R
4
1
8
2
2
k
R
4
2
3 2
2
k
R
4
2
8
4
.7
k
R
4
2
7 2
2
k
R
4
2
9
1
5
0
k
R
4
1
7
1
5
0
k
R
4
2
0
1
5
0
k
C
4
2
0
2
.2
u
/1
6
V
C
4
1
9
2
.2
u
/1
6
V
C
4
2
1
2
.2
u
/1
6
V
C
4
2
2
2
.2
u
/1
6
V
C
4
2
3
2
.2
u
/1
6
V
R
4
3
5
1
2
k
R
4
3
8
1
2
k
R
4
3
7
1
0
k
3 2
1
8 4
N
4
0
4
A
4
5
5
8
5 6
7
N
4
0
4
B
4
5
5
8
C
4
3
7
1
8
2
C
4
2
5
1
8
2
C
4
2
4
1
0
3
+
1
2
V
-1
2
V
R
4
4
8
1
0
0
k
R
4
4
4
2
2
k
R
4
3
0
1
5
0
k
R
4
4
7
1
0
0
k
R
4
3
4
1
0
k
C
4
3
6
1
0
3
R
4
3
6
1
0
0
k
R
4
4
6
4
7
k
C
4
3
5
2
.2
u
/1
6
V
3 2
1
8 4
N
4
0
5
A
4
5
5
8
5 6
7
N
4
0
5
B
4
5
5
8
3 2
1
8 4
N
4
0
6
A
4
5
5
8
5 6
7
N
4
0
6
B
4
5
5
8
-1
2
V
-1
2
V
+
1
2
V
R
4
4
3
1
0
k
R
4
4
0
1
0
k
C
4
2
7
2
.2
u
/1
6
V
C
4
2
9
2
.2
u
/1
6
V
+
1
2
V
R
4
3
9
1
0
0
k
R
4
3
3
1
0
0
k
R
4
4
5
1
0
0
k
R
4
4
2
1
0
0
k
R
4
4
9
2
2
0
C
4
3
3
2
.2
u
/1
6
V
+
5
V
R
E
S
E
T
R
4
6
5
2
2
k
R
4
3
2
1
0
0
k
R
4
4
1
2
2
k
R
4
3
1
1
5
0
k
C
4
4
3
2
.2
u
/1
6
V
R
4
1
3
1
0
R
4
1
4
1
0
C
4
0
9
1
0
4
C
4
1
0
1
0
4
V
s
g
1
R
E
M
O
T
E
b
1
+
c
1
a
2
b
2
c
2
d
2
e
2
f2 g
2
G
N
D
L
R
S
L
S
R
S
R
S
L
L R C G
N
D
G
N
D
V
D
4
0
5 R
L
2
5
4
V
D
4
0
6
R
L
2
5
4
C
4
3
0
1
5
1
C
4
2
8
1
5
1
C
4
6
1 1
5
1
C
4
6
0
1
5
1
R
S
T
/V
p
p
1
P
3
.0
2
P
3
.1
3
X
T
A
L
2
4
X
T
A
L
1
5
P
3
.2
6
P
3
.3
7
P
3
.4
8
P
3
.5
9
G
N
D
1
0
V
c
c
2
0
P
1
.7
1
9
P
1
.6
1
8
P
1
.5
1
7
P
1
.4
1
6
P
1
.3
1
5
P
1
.2
1
4
P
1
.1
1
3
P
1
.0
1
2
P
3
.7
1
1
N
4
0
2
A
T
8
9
C
2
0
5
1
R
4
6
6
1
0
k +
5
V
R
4
6
7
4
7
k
C
4
6
2
1
5
1
V
s
V
s
R
4
7
0 1
.5
k
V
D
4
1
2
1
N
4
0
0
4
V
D
4
1
3
1
N
4
0
0
4
F
ro
m
T
ra
n
s
.
T
o
D
is
p
la
y
B
o
a
rd
1 2 3 4 5 6 7
X
S
2
7
P
IN
GG L R C S
L
S
R
S
W
1 2 3 4 X
P
7
4
P
IN
V
s
G
N
D
Fro m I np ut Bo ard
T
o
S
u
b
-A
M
P
B
o
a
rd
T
o
S
u
b
-A
M
P
B
o
a
rd