Read Sony KV-27V42 Service Manual online
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
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