Sony KV-21FA210 (serv.man2) Service Manual ▷ View online
— 34 —
KV-21FA210
A BOARD TRANSISTOR VOLTAGE LIST
B
C
E
B
C
E
Q002
0.0
2.0
GND
Q405
0.0
0.0
GND
Q004
3.8
9.0
4.4
Q411
0.0
5.8
GND
Q005
5.1
0.8
5.0
Q412
0.1
0.1
GND
Q006
0.0
0.0
GND
Q435
0.0
GND
5.8
Q008
0.0
2.6
GND
Q501
0.0
14.3
GND
Q009
0.0
5.2
GND
Q502
0.0
74.1
GND
Q301
3.6
2.1
3.6
Q506
0.0
131.8
0.0
Q303
3.6
GND
2.8
Q521
0.0
3.8
GND
Q304
3.6
GND
2.9
Q522
0.1
-2.1
0.0
Q305
3.6
GND
3.0
Q572
0.0
2.6
GND
Q306
5.5
GND
4.9
Q573
2.6
0.0
2.6
Q390
0.8
1.5
1.9
Q578
0.0
0.5
GND
Q391
0.6
3.3
1.5
Q590
133.7
0.0
134.2
Q400
0.0
0.1
GND
Q604
30.6
11.6
30.2
Q401
0.0
0.1
GND
Q608
0.0
6.7
GND
Q404
0.0
0.0
GND
Q650
5.8
9.0
5.0
D
G
S
Q600
340.0
160.0
156.0
Q601
155.0
4.9
0.0
All voltages are in V.
☛
☛
6
8
10
12
14
13
15
4
7
3
11
2
5
9
A BOARD WAVEFORMS
1
2.1 Vp-p (H)
3.2 Vp-p (H)
1.2 Vp-p (H)
0.9 Vp-p (H)
1.0 Vp-p (H)
1.0 Vp-p (V)
4.7 Vp-p (H)
2.4 Vp-p (H)
168.8 Vp-p (H)
28.7 Vp-p (H)
1.14K Vp-p (V)
1.0 Vp-p (H)
50.3 Vp-p (V)
0.7 Vp-p (H)
196.9 Vp-p (H)
16
1.9 Vp-p (V)
— 35 —
KV-21FA210
A BOARD IC VOLTAGE LIST
44
1.6
7
GND
3
-12.2
13
NC
PIN
VOLT
45
1.6
8
5.0
4
-13.3
14
163.9
1
N/C
46
2.3
5
0.2
15
153.8
2
GND
47
1.0
PIN
VOLT
6
13.8
16
158.2
3
2.2
48
N/C
1
N/C
7
0.7
17
NC
4
2.2
49
0.5
2
GND
IC561
18
340.0
5
GND
50
1.2
3
GND
PIN
VOLT
IC603
6
5.0
51
2.0
4
5.0
1
0.1
PIN
VOLT
7
0.0
52
1.5
5
5.0
2
3.4
I
12.0
8
2.0
53
4.8
3
2.3
G
GND
9
0.3
54
4.8
PIN
VOLT
4
GND
O
9.0
10
2.1
55
4.8
1
4.5
5
9.2
IC604
11
5.0
56
4.8
2
0.3
6
10.2
PIN
VOLT
12
GND
57
N/C
3
4.5
7
0.1
1
133.7
13
3.3
58
5.2
4
0.3
8
13.5
2
N/C
14
3.1
59
0.0
5
4.5
IC565
3
2.5
15
1.0
60
0.0
6
4.5
PIN
VOLT
4
11.3
16
1.5
61
0.0
7
0.0
1
3.4
5
GND
17
3.3
62
0.0
8
4.5
2
3.4
IC608
18
0.5
63
1.4
9
4.5
3
2.1
PIN
VOLT
19
1.1
64
4.9
10
N/C
4
9.0
I
11.0
20
GND
65
4.9
11
4.4
5
1.0
O
5.0
21
0.5
66
0.0
12
0.0
6
1.0
G
GND
22
1.7
67
0.1
13
4.5
7
1.0
23
0.5
68
0.1
14
9.0
8
1.6
PIN
VOLT
24
0.5
69
2.4
15
4.4
9
1.6
I
9.0
25
0.5
70
5.0
16
GND
10
1.6
G
GND
26
0.0
71
5.0
IC404
11
GND
O
3.3
27
0.0
72
0.1
PIN
VOLT
12
1.6
All voltages are in V.
28
2.1
73
0.0
1
14.6
13
1.6
29
2.7
74
5.0
2
7.0
14
1.6
30
3.3
75
5.0
3
GND
31
2.9
76
5.0
4
7.0
PIN
VOLT
32
GND
77
0.1
5
5.9
1
2.8
33
2.8
78
0.0
6
0.0
2
1.9
34
3.3
79
4.9
7
GND
3
2.3
35
2.9
80
4.9
8
0.0
4
2.6
36
GND
9
0.5
5
GND
37
1.8
PIN
VOLT
10
7.2
6
0.0
38
0.0
1
GND
11
GND
7
4.6
39
0.1
2
GND
12
7.0
8
17.5
40
2.0
3
GND
IC545
9
0.0
41
1.6
4
GND
PIN
VOLT
10
10.6
42
3.3
5
4.8
1
0.7
11
0.0
43
N/C
6
4.8
2
13.5
12
4.9
IC633
IC001
IC002
IC003
IC600
IC401
☛
KV-21FA210
— 36 —
1
|
2 |
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
A
—
B
—
C
—
D
—
E
—
F
—
G
—
H
—
I
—
J
—
M3 BOARD SCHEMATIC DIAGRAM
1
2
3
4
5
6
1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
C11
R12
C13
C14
R51
R52
C70
R70
R71
R72
C71
R77
R78
C80
R50
R53
D50
C50
C51
R55
R56
R58
R59
R54
R57
R11
C10
R10
C12
R13
R79
L50
IC1
IC3
IC2
Q50
Q51
Q52
CN10
CN11
R74
R75
R76
0.01
:CHIP
1k
0.01
:CHIP
1000p
10k
:CHIP
10k
:CHIP
47
10k
10k
2.2k
0.01
:CHIP
100k
22k
47
4.7k
:CHIP
4.7k
:CHIP
MA111
0.47
4.7k
:CHIP
1.5k
:CHIP
15k
:CHIP
4.7k
:CHIP
4.7k
:CHIP
0
:CHIP
4.7k
47
4.7k
1000p
4.7k
4.7k
NJM2903M
COMPARITOR
NJM2904M
COMPARITOR
NJM2903M
COMPARITOR
2SD601A
AMP
2SD601A
AMP
2SD601A
AMP
6P
1P
100k
100k
47k
9V
9V
HDRV IN
ABL
9V
HDRV OUT
GND
3.3V
-13V
TO A BOARD
MOUNTED
TO A BOARD
MOUNTED
(HDR IN/OUT)
9-965-938-01<BA6>M3
KV-21FA210
— 37 —
[HDR IN/OUT] [COMPONENT SIDE]
M3
[HDR IN/OUT] [CONDUCTOR SIDE]
M3
R73
R75
C1
3
R1
2
C11
C7
1
R72
C73
R7
0
R7
1
R74
C72
R76
C7
4
C10
IC3
C80
IC1
CN
10
CN11
R11
R10
C1
2
C14 R13
R79
R7
8
C70
C51
C50
ID2
R55
R59
R77
D50
L5
0
9V
HD
RV
IN
ABL
HDRV
OUT
3.
3V
GN
D
1-
68
5-
12
0-
13
17
21
34
51
3
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�
�
�
�
�
�
R50
C10
Q52
Q51
IC2
Q50
R54
R56
R57
C70
C51
C50
ID1
R58
1
6
CN11
1-685-120-13
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