Sony KV-27V42 Service Manual ▷ View online
— 31 —
— 32 —
— 33 —
— 34 —
A BOARD SCHEMATIC DIAGRAM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
A
B
C
D
E
F
G
H
I
A BOARD WAVEFORMS
16
17
18
19
20
J
K
L
M
N
8
4.2
18
3.5
23
5.1
6
10.2
pin
volt
pin
volt
9
5.1
19
3.1
24
0.0
7
0.1
1
0.6
1
7.1
10
4.2
20
2.5
25
1.1
8
13.8
2
4.8
2
GND
11
NC
21
1.6
26
0.0
3
0.0
3
5.4
12
GND
22
1.8
27
2.5
pin
volt
4
0.0
4
GND
13
4.9
23
1.8
28
5.1
1
1.6
5
4.8
5
GND
14
4.3
24
1.8
29
2.3
2
13.8
6
0.0
6
4.9
15
4.3
25
NC
30
2.3
3
-13.4
7
0.0
7
GND
16
4.3
26
NC
4
-15.3
8
0.2
8
4.9
17
GND
27
NC
pin
volt
5
0.0
9
0.0
18
GND
28
NC
1
0.7
6
14.6
10
NC
pin
volt
19
4.9
29
0.0
2
NC
7
1.6
11
NC
1
GND
20
4.9
30
4.6
3
2.3
12
3.3
2
GND
21
GND
31
4.6
4
14.3
pin
volt
13
0.0
3
GND
22
NC
32
4.6
5
2.3
1
1.8
14
4.9
4
GND
23
5.0
33
8.9
6
GND
2
0.2
15
0.0
5
4.9
24
NC
34
4.9
7
0.3
3
151.7
16
0.0
6
4.9
25
4.2
35
4.9
8
6.9
4
17.3
17
-0.3
7
GND
26
4.2
36
0.0
9
GND
5
GND
18
4.9
8
4.9
27
5.0
37
4.4
10
6.9
19
4.9
28
NC
38
5.2
11
6.9
pin
volt
20
1.8
pin
volt
29
NC
39
5.2
12
GND
1
135
21
0.0
1
2.9
30
GND
40
GND
13
6.9
2
121
22
2.2
2
4.9
31
NC
41
NC
3
GND
23
GND
3
GND
32
4.2
42
8.9
pin
volt
24
2.3
33
4.2
43
5.2
1
4.4
pin
volt
25
2.3
pin
volt
34
5.0
44
9.0
2
GND
IN
11.7
26
GND
1
0.0
35
0.0
45
4.9
3
4.4
OUT
9.0
27
4.9
2
0.5
36
4.3
46
4.7
4
4.4
GND
GND
28
0.0
3
0.0
37
NC
47
1.9
5
4.4
29
0.0
4
GND
38
9.0
48
NC
6
4.4
30
4.9
5
NC
39
NC
7
4.4
31
4.9
6
9.0
40
4.2
1
5.1
8
4.4
32
2.8
7
0.0
41
5.1
2
0.0
9
4.4
33
4.9
8
GND
42
4.2
3
0.0
10
1.5
34
2.5
4
NC
11
4.9
35
NC
pin
volt
pin
volt
5
1.2
12
4.9
36
4.9
1
7.6
1
3.4
6
0.0
13
5.6
37
4.9
2
7.6
2
5.1
7
5.1
14
4.4
38
4.9
3
7.6
3
4.3
8
1.1
15
4.4
39
4.9
4
GND
4
5.1
9
5.1
16
4.4
40
0.5
5
7.6
5
4.8
10
0.7
17
4.4
41
0.0
6
7.6
6
4.4
11
0.0
18
4.4
42
0.0
7
7.6
7
2.2
12
2.0
19
4.4
43
4.9
8
15.3
8
4.9
13
2.8
20
4.4
44
0.1
9
5.1
14
1.0
21
9.0
45
NC
pin
volt
10
GND
15
2.2
22
4.4
46
4.9
1
4.9
11
4.3
16
0.0
47
0.0
2
4.2
12
2.4
17
0.0
pin
volt
48
0.0
3
4.9
13
3.5
18
0
1
0.1
49
0.0
4
4.2
14
3.5
19
0
2
3.8
50
0.0
5
4.9
15
5.7
20
NC
3
2.5
51
0.0
6
6.1
16
7.6
21
0
4
GND
52
0.0
7
4.9
17
0.7
22
5.1
5
9.1
IC604
IC401
IC001
IC002
IC003
IC004
IC402
IC541
IC601
IC602
IC521
IC010
IC202
IC203
IC301
IC302
A BOARD IC VOLTAGE LIST
All voltages are in V
All voltages are in V
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B
C
E
B
C
E
Q001 4.3 4.8 4.9
Q351 1.4
8.3
0.8
Q080 0.0 3.9 GND
Q352 8.3
1.2
8.9
Q082 0.2 4.6 GND
Q353 1.2 GND 1.8
Q083 0.0 0.6 GND
Q354 1.1 GND 1.7
Q101 0.0 4.6 GND
Q355 1.7
8.2
1.1
Q170 4.4 9.0 0.0
Q356 8.2
1.5
8.8
Q200 0.0 0.0 GND
Q357 1.5 GND 2.2
Q201 0.6 0.0 GND
Q358 5.9
9.0
5.2
Q203 2.4 GND 0.7
Q359 3.8 GND 4.4
Q280 5.2 GND 5.9
Q360 4.7 GND 5.3
Q281 4.1 GND 4.7
Q361 1.3
5.1
1.2
Q282 4.1 GND 4.7
Q390 5.0
9.0
4.4
Q283 0.0 5.9 GND
Q391 0.0
5.0 GND
Q284 0.6 0.0 GND
Q501 -0.1 97.3 GND
Q285 0.6 0.0 GND
Q521 0.1
4.2 GND
Q286 4.4 GND 4.9
Q522 0.4 11.2 GND
Q287 5.0 GND 5.7
Q550 0.7
0.1 GND
Q288 7.3 9.0 6.7
Q555 2.1
4.0
1.5
Q300 0.2 3.5 GND
Q571 134.0 0.8 134.6
Q302 4.4 9.0 3.8
Q601 -0.1
0.2
0.0
Q305 3.8 GND 4.4
Q602 0.0 17.0
0.0
Q306 1.7 GND 2.4
Q603 17.0 2.9
17.3
Q307 1.8 GND 2.4
Q604 0.1
3.9 GND
Q308 1.8 GND 2.4
Q607 0.7
0.1 GND
Q309 3.6 1.6 3.8
Q610 0.0
0.7 GND
Q310 3.6 GND 3.8
Q630 0.0 135.0 GND
Q349 5.2 9.0 4.6
Q650 5.7
9.0
5.1
Q350 0.7 GND 1.4
A BOARD TRANSISTOR
VOLTAGE LIST
VOLTAGE LIST
KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
858 A Schematic.p65
4/22/99, 2:37 PM
1
Added Connection Point
Added Connection Point
IC1404
PIN
VOLT
1
4.5
2
4.5
3
4.5
4
4.5
5
4.6
6
4.5
7
4.5
8
0
9
0
10
4.6
11
0
12
9.0
13
4.5
14
4.6
15
4.5
16
4.5
17
4.5
18
4.5
19
4.6
20
4.6
GND
GND
GND
GND
1
2
3
4
5
6
7
A
B
C
D
8
9
K BOARD SCHEMATIC DIAGRAM
SCHEMATIC DIAGRAMS
A Board
P BOARD IC VOLTAGE LIST
IC3301
22
0.8
pin
volt
23
0.7
1
0.0
24
3.3
2
0.0
25
3.3
3
4.9
26
1.5
4
4.9
27
1.5
5
3.3
28
2.0
6
NC
29
0.4
7
0.0
30
0.5
8
0.0
31
GND
9
NC
32
0.6
10
NC
33
0.0
11
0.0
34
GND
12
0.0
35
3.0
13
3.3
36
1.2
14
3.3
37
2.9
15
3.3
38
1.3
16
0.0
39
2.3
17
0.0
40
3.3
18
0.4
41
1.2
19
GND
42
GND
20
0.5
21
1.5
All voltages are in V
P BOARD TRANSISTOR
VOLTAGE LIST
VOLTAGE LIST
B
C
E
Q3304
2.3
GND
2.9
Q3305
3.0
GND
3.7
Q3306
3.0
GND
3.7
Q3309
0.7
0.0
GND
Q3310
0.3
8.9
1.8
Q3311
3.9
7.4
3.3
Q3312
8.2
0.1
8.9
Q3313
0.2
3.3
GND
Q3314
3.1
0.6
GND
All voltages are in V
K BOARD IC
VOLTAGE LIST
VOLTAGE LIST
pin
volt
1
0.0
2
GND
3
0.0
4
0.0
5
GND
6
0.0
7
16.9
8
0.0
9
0.0
pin
volt
1
0.0
2
GND
3
0.0
4
0.0
5
GND
6
0.0
7
16.9
8
0.0
9
0.0
IC1400
IC1401
All voltages are in V
B
C
E
Q1001
7.0
8.9
6.4
Q1002
5.1
0.0
5.1
Q1003
4.4
5.0
5.1
Q1004
4.5
GND
5.2
Q1006
4.5
5.1
5.1
Q1400
0.7
0.0
GND
K BOARD TRANSISTOR
VOLTAGE LIST
VOLTAGE LIST
All voltages are in V
K BOARD WAVEFORMS
1
2
2.2 Vp-p (H)
1.3 Vp-p (H)
— 35 —
— 36 —
— 37 —
— 38 —
KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
19 0.0
pin volt 20 4.5
1 4.5 21 4.5
2 4.5 22 4.5
3 4.5 23 4.5
4 4.5 24 4.5
5 4.5 25 4.5
6 4.5 26 4.5
7 4.5 27 4.5
8 4.5 28 4.5
9 4.5 29 4.5
2 4.5 22 4.5
3 4.5 23 4.5
4 4.5 24 4.5
5 4.5 25 4.5
6 4.5 26 4.5
7 4.5 27 4.5
8 4.5 28 4.5
9 4.5 29 4.5
10 4.5 30 4.5
11 4.5
12 4.4 pin volt
13 4.4 1 3.9
14 4.4 2 5.0
15 4.5 3 GND
16 8.9
11 4.5
12 4.4 pin volt
13 4.4 1 3.9
14 4.4 2 5.0
15 4.5 3 GND
16 8.9
17 GND
18 0.0
18 0.0
IC1403
IC2003
HV BOARD IC
VOLTAGE LIST
VOLTAGE LIST
All voltages are in V
[P in P]
(KV-27V66 ONLY)
(KV-27V66 ONLY)
COMPONENT SIDE
CONDUCTOR SIDE
[2ND TUNER, AUDIO AMP]
(KV-27V66 ONLY)
(KV-27V66 ONLY)
[CONTROL AUDIO AMP]
(KV-27V42/27V66/29VL42T ONLY)
(KV-27V42/27V66/29VL42T ONLY)
P K HV Boards
1
2
3
4
5
6
7
A
B
C
D
E
F
P BOARD SCHEMATIC DIAGRAM
HV BOARD SCHEMATIC DIAGRAM
1
2
3
4
5
6
7
A
B
C
D
8
9
10
E
11
F
12
G
8
9
P BOARD WAVEFORMS
1
2
0.7 Vp-p (H)
4.3 Vp-p (H)
3
1.6 Vp-p (H)
4
8.9 Vp-p (V)
858 p-k PWB.p65
4/23/99, 1:14 PM
1
— 39 —
— 40 —
KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
pin
volt
1
2.3
2
2.3
3
2.3
4
GND
5
2.3
6
198.1
7
137.3
8
138.6
9
140.8
IC1751
C BOARD IC
VOLTAGE LIST
VOLTAGE LIST
All voltages are in V
1
2
3
168.2 Vp-p (H)
140.6 Vp-p (H)
146.5 Vp-p (H)
C BOARD WAVEFORMS
[CRT DRIVE, R.G.B. DRIVE]
(KV-29XL42T/29SL42T/29SL42K ONLY)
(KV-29XL42T/29SL42T/29SL42K ONLY)
1
2
3
4
5
6
7
A
B
C
D
E
[ENERGY START]
REF NO.
KV-29SL42K
KV-27V42/V66/29SL42T/VL42T/XL42T
C5021
0.0047 125V
JW(7.5MM)
C5150
#
0.47
F5050
6.3A 250V
6.3A 125V
R5350
8.2M
4.7M
T5050
1-424-220-11
1-426-717-11
VDR505
1-803-587-11
1-803-585-11
E BOARD (*) MARK VARIANT LIST
All voltages are in V
B
C
E
Q5002
0.4
1.5
0.0
G
S
D
Q5001
1.5
0.1
157.6
#: Not Mounted
C BOARD SCHEMATIC DIAGRAM
1
2
3
4
5
6
7
A
B
C
D
E BOARD SCHEMATIC DIAGRAM
E BOARD TRANSISTOR VOLTAGE LIST
E C board.p65
4/22/99, 3:17 PM
1
— 41 —
KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
B
C
E
Q943
4.5
8.9
3.7
Q944
2.1
8.9
1.5
Q945
2.1
6.0
1.5
Q946
133.2
67.1
134.7
Q947
0.9
67.1
0.3
Q965
6.5
8.9
6.2
Q966
6.0
0.0
6.2
CV BOARD TRANSISTOR
VOLTAGE LIST
VOLTAGE LIST
All voltages are in V
CV BOARD IC
VOLTAGE LIST
VOLTAGE LIST
pin
volt
1
2.3
2
2.3
3
2.3
4
GND
5
3.7
6
203.6
7
129.0
8
126.0
9
127.0
IC1701
All voltages are in V
CV Board
SCHEMATIC DIAGRAMS
E C Boards
— 42 —
1
2
3
4
5
6
7
A
B
C
D
CV BOARD SCHEMATIC DIAGRAM
[CRT DRIVE, R.G.B. DRIVE, VELOCITY MODULATION]
(KV-27V42/27V66/29VL42T ONLY)
(KV-27V42/27V66/29VL42T ONLY)
1
2
3
179.7 Vp-p (H)
156.3 Vp-p (H)
167.2 Vp-p (H)
CV BOARD WAVEFORMS
8
9
10
11
D
CV board.p65
4/22/99, 3:16 PM
1
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