A
B
C
D
E
F
G
H
I
J
K
L
M
N
1
2
3
4
5
6
7
8
9
10
11
O
- 54 -
Note :
Portions of the circuit contained within
the marked areas as shown have high
voltages present. Use care to prevent
electric shock during inspection or repair.
An Isolation Transformer must be used
during any Service work to avoid possible
shock hazard due to live chassis. The
chassis of this receiver is directly
connected to the power line.
~ G Board Semiconductor Location Table ~
~ G Printed Wiring Board Conductor side ~
500ns/div
500ns/div
500ns/div
800 mVp-p (V)
1.85 Vp-p (V)
36.0 Vp-p (V)
TP2
TP3
TP1
~ VM Board Waveforms ~
f
e
R
)
e
(
)
b
(
)
c
(
0
0
4
5
Q
9
.
0
5
.
1
8
.
8
1
0
4
5
Q
9
.
0
6
.
1
0
.
5
2
0
4
5
Q
8
.
5
4
.
6
8
.
8
3
0
4
5
Q
6
.
5
8
.
5
8
.
8
4
0
4
5
Q
6
.
5
0
.
5
0
5
0
4
5
Q
6
.
5
6
.
5
0
6
0
4
5
Q
9
.
3
3
1
6
.
3
3
1
2
.
7
6
7
0
4
5
Q
0
.
1
3
.
1
2
.
7
6
8
0
4
5
Q
9
.
3
1
.
3
9
.
3
9
0
4
5
Q
9
.
3
2
.
3
8
.
8
~ VM Board Semiconductor Voltages ~
e
l
b
a
T
e
g
a
t
l
o
V
C
I
o
N
f
e
R
o
N
n
i
P
)
V
(
e
g
a
t
l
o
V
3
0
0
6
C
I
1
0
.
4
3
1
2
3
.
1
1
3
0
f
e
R
)
e
(
)
b
(
)
c
(
3
0
0
6
Q
0
3
.
0
9
.
0
1
5
0
0
6
Q
1
.
7
9
.
6
6
.
0
0
1
0
6
Q
0
5
.
0
9
.
6
1
0
1
6
Q
8
.
3
2
6
.
3
2
0
.
1
1
2
0
1
6
Q
0
7
.
0
0
3
0
1
6
Q
7
.
3
2
4
.
3
2
4
.
0
1
4
0
1
6
Q
0
0
4
.
3
2
5
0
1
6
Q
0
0
6
.
3
2
~ G Board IC Voltages ~
~ G Board
Semiconductor Voltages ~
E
D
O
I
D
7
0
0
6
D
2
-
B
2
1
0
6
D
3
-
E
2
0
1
6
D
2
-
I
C
I
5
0
0
6
Q
2
-
B
2
0
1
6
Q
1
-
J
1
0
0
6
D
4
-
K
8
0
0
6
D
3
-
G
4
1
0
6
D
2
-
D
4
0
1
6
D
1
-
K
1
0
0
6
C
I
5
-
H
6
0
0
6
Q
4
-
H
3
0
1
6
Q
1
-
J
2
0
0
6
D
2
-
A
9
0
0
6
D
4
-
E
5
1
0
6
D
2
-
E
5
0
1
6
D
1
-
L
3
0
0
6
C
I
4
-
F
7
0
0
6
Q
3
-
H
4
0
1
6
Q
1
-
J
4
0
0
6
D
4
-
G
0
1
0
6
D
4
-
E
6
1
0
6
D
1
-
H
6
0
1
6
D
1
-
J
R
O
T
S
I
S
N
A
R
T
0
1
0
6
Q
2
-
B
5
0
1
6
Q
1
-
M
6
0
0
6
D
2
-
B
1
1
0
6
D
3
-
E
5
3
0
6
D
2
-
I
7
0
1
6
D
1
-
M
3
0
0
6
Q
1
-
M
1
0
1
6
Q
1
-
L
~ VM Printed Wiring Board Conductor side ~
Summary of Contents for KV-36FS76U
Page 107: ......
