27
28
30
29
A
B
C
D
E
F
G
H
I
J
K
L
M
1
2
3
4
5
6
7
8
9
10
[
C
PRINTED WIRING BOARD
]
C
[
R, G, B OUT
]
[
A
PRINTED WIRING BOARD
]
20us/div
20us/div
20us/div
20us/div
20us/div
20us/div
10us/div
1.77 Vp-p (H)
1.88 Vp-p (H)
1.88 Vp-p (H)
74 Vp-p (H)
74 Vp-p (H)
TP1
TP2
TP3
TP4
C board Waveforms
1.76 Vp-p (H)
74 Vp-p (H)
TP4
TP5
TP6
TP7
f
e
R
)
e
(
)
b
(
)
c
(
f
e
R
)
e
(
)
b
(
)
c
(
f
e
R
)
e
(
)
b
(
)
c
(
1
0
7
Q
2
.
4
2
1
8
.
4
2
1
2
0
2
6
0
7
Q
5
.
7
1
.
8
0
.
5
2
1
2
1
7
Q
8
.
5
2
1
4
.
6
2
1
9
.
1
0
2
2
0
7
Q
3
.
2
0
.
3
5
.
7
7
0
7
Q
6
.
4
2
1
8
.
5
2
1
5
.
5
3
1
7
Q
0
.
3
3
1
4
.
2
3
1
9
.
1
0
2
3
0
7
Q
5
.
7
1
.
8
6
.
1
3
1
8
0
7
Q
5
.
3
1
.
2
5
.
7
5
1
7
Q
3
.
2
3
1
5
.
1
3
1
1
.
8
4
0
7
Q
1
3
1
4
.
2
3
1
2
.
5
9
0
7
Q
5
.
7
1
.
8
3
.
3
2
1
6
1
7
Q
8
.
5
2
1
0
.
5
2
1
1
.
8
5
0
7
Q
5
.
2
1
.
3
5
.
7
0
1
7
Q
0
.
3
2
1
3
.
4
2
1
5
.
5
7
1
7
Q
2
.
4
2
1
4
.
3
2
1
1
.
8
C board Semiconductor Voltage Table
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
1
0
8
1
C
I
1
3
.
1
2
3
.
1
3
4
.
1
5
1
.
4
6
1
.
4
7
0
.
7
8
0
.
8
C board IC Voltage Table
A board Waveforms
1.83 Vp-p (V)
20us/div
TP7
20us/div
TP6
16.8 Vp-p (H)
5ms/div
49.8 Vp-p (V)
TP8
20us/div
1.86 Vp-p (H)
TP3
20us/div
6.0 Vp-p (H)
TP4
20us/div
5.4 Vp-p (H)
TP5
20us/div
1.84 Vp-p (H)
TP2
20us/div
1.88 Vp-p (H)
TP1
5ms/div
488 mVp-p (V)
TP9
TP10
1.06 kVp-p (H)
20us/div
5ms/div
50.8 Vp-p (V)
TP11
NOTE:
Portions of the circuit marked as shown are high
voltage areas. Use care to prevent electric shock
during inspection or repair.
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
o
N
f
e
R
o
N
n
i
P
)
V
(
e
g
a
t
l
o
V
1
0
0
C
I
1
0
1
0
0
C
I
7
6
8
.
4
2
2
.
3
8
6
4
.
0
3
9
.
2
9
6
0
5
0
0
7
0
6
0
.
2
1
7
0
8
3
.
2
2
7
0
9
0
.
8
3
7
1
.
7
0
1
0
.
5
4
7
0
.
5
2
1
0
5
7
1
.
8
3
1
0
6
7
5
.
3
-
4
1
0
.
4
7
7
0
6
1
4
.
1
8
7
2
.
3
7
1
5
.
1
9
7
2
.
3
8
1
0
0
8
0
9
1
0
1
0
5
C
I
1
3
.
0
0
2
8
.
3
3
6
.
2
1
-
1
2
8
.
3
5
2
.
0
2
2
0
.
5
6
9
.
3
1
6
2
0
7
3
.
0
8
2
5
.
3
1
3
5
C
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1
4
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1
9
2
6
.
3
2
3
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2
0
3
9
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1
3
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1
1
3
3
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0
5
4
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2
2
3
6
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3
6
6
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1
4
3
9
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1
7
4
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6
5
3
4
.
1
1
0
6
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1
4
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0
8
-
6
3
9
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3
2
5
.
0
8
-
8
3
8
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1
3
2
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0
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0
4
3
.
3
4
2
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0
8
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2
4
3
.
3
5
5
.
1
8
-
3
4
4
.
1
6
6
.
1
8
-
5
4
0
7
8
.
7
7
-
6
4
0
9
8
.
1
8
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7
4
6
.
3
0
1
6
7
-
8
4
8
.
2
1
1
9
.
1
8
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9
4
3
.
2
2
1
4
.
9
7
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0
5
2
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0
4
1
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6
1
1
5
5
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2
5
1
1
1
2
5
5
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2
6
1
4
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4
1
3
5
5
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2
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1
4
.
6
8
4
5
1
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2
1
0
2
1
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1
1
1
5
5
2
.
5
3
9
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4
6
5
0
.
3
5
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5
1
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3
6
0
8
5
1
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3
7
3
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1
1
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2
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3
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3
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0
2
6
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0
1
0
3
6
0
2
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4
6
0
4
1
5
3
.
1
1
5
6
0
f
e
R
)
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(
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b
(
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(
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R
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(
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(
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3
1
0
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0
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4
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6
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5
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2
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D
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5
3
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2
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4
3
6
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1
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2
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6
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3
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6
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2
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4
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4
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7
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8
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1
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6
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5
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1
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0
C
I
2
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K
0
1
0
D
2
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G
7
0
5
D
1
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J
2
0
0
C
I
8
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M
1
1
0
D
2
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H
2
1
5
D
8
-
D
3
0
0
C
I
2
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2
1
0
D
2
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J
3
1
5
D
9
-
D
4
0
0
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4
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3
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0
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8
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4
1
5
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9
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C
1
0
4
C
I
2
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4
1
0
D
8
-
M
4
3
5
D
4
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D
1
0
5
C
I
0
1
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D
6
1
0
D
2
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5
3
5
D
6
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1
3
5
C
I
4
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7
1
0
D
1
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L
6
3
5
D
6
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B
1
0
6
C
I
0
1
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F
8
1
0
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2
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G
7
3
5
D
4
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C
2
0
6
C
I
7
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F
9
1
0
D
1
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L
8
3
5
D
6
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F
4
0
6
C
I
5
-
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0
2
0
D
8
-
M
9
3
5
D
5
-
B
8
0
6
C
I
6
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L
5
3
0
D
2
-
L
3
7
5
D
5
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F
9
0
6
C
I
6
-
L
6
3
0
D
2
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L
1
0
6
D
9
-
I
1
0
2
1
C
I
4
-
H
1
5
0
D
1
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K
2
0
6
D
5
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K
R
O
T
S
I
S
N
A
R
T
1
0
1
D
1
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B
4
0
6
D
9
-
F
3
1
0
Q
3
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K
3
0
1
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2
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0
1
6
D
5
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J
6
1
0
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3
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I
4
0
1
D
2
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E
1
1
6
D
5
-
G
2
1
2
Q
5
-
I
0
1
2
D
5
-
I
2
1
6
D
5
-
G
1
0
4
Q
1
-
C
1
1
2
D
5
-
I
3
1
6
D
6
-
J
1
1
4
Q
1
-
D
2
1
2
D
5
-
I
4
1
6
D
8
-
K
2
3
5
Q
4
-
D
2
0
4
D
2
-
B
5
1
6
D
5
-
H
3
3
5
Q
6
-
A
4
0
4
D
2
-
I
6
1
6
D
6
-
G
5
3
5
Q
4
-
B
5
0
4
D
2
-
B
7
1
6
D
6
-
G
1
0
6
Q
5
-
K
6
0
4
D
2
-
B
8
1
6
D
6
-
H
2
0
6
Q
5
-
G
7
0
4
D
3
-
B
9
1
6
D
6
-
H
3
0
6
Q
5
-
G
8
0
4
D
2
-
B
0
2
6
D
5
-
M
4
0
6
Q
5
-
G
2
1
4
D
3
-
C
1
2
6
D
5
-
J
6
0
6
Q
0
1
-
G
4
1
4
D
3
-
B
3
2
6
D
5
-
J
7
0
6
Q
9
-
G
0
2
4
D
1
-
B
7
2
6
D
7
-
K
8
0
6
Q
6
-
J
1
2
4
D
2
-
C
1
3
6
D
6
-
L
9
0
6
Q
6
-
J
3
2
4
D
2
-
B
2
3
6
D
5
-
L
4
2
4
D
2
-
M
3
3
6
D
5
-
L
A board Semiconductor Voltage Table
A board Location Table
A board IC Voltage Table
Содержание KV-21FT1B
Страница 21: ...21 Memo ...
