Sony BA-4D Service Manual - Page 10

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Sony BA-4D Service Manual
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
P
[P in P]
(KV-27S46/29AL42/29AL42C/29AL66/29AL66C ONLY)
COMPONENT SIDE
CONDUCTOR SIDE
P BOARD WAVEFORMS
1
2
3
4
0.7 Vp-p (H)
4.3 Vp-p (H)
1.6 Vp-p (H)
8.9 Vp-p (V)
P BOARD SCHEMATIC DIAGRAM
— 35 —
A board
K P
boards
857 4 P and K boards.p65
1
P BOARD TRANSISTOR
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
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
— 36—
K
[SECOND TUNER, AUDIO AMP]
(KV-27S66/29AL42/29AL42C/29AL66/29AL66C ONLY)
K BOARD SCHEMATIC DIAGRAM
HT
[CNTL]
(KV-29AL42/29AL42C/29AL66/29AL66C ONLY)
— 37 —
3/29/99, 4:21 PM
K BOARD (*) MARK VARIANT LIST
K BOARD IC
VOLTAGE LIST
KV29AL42
KV-29AL66
IC1400
REF. NO.
KV-27S66
KV-29AL42C
KV-29AL66C
C1401
#
0.47MF
0.22MF
pin
volt
C1402
#
0.47MF
0.22MF
1
0.0
C1403
#
2200MF
2200MF
2
GND
C1404
#
2200MF
2200MF
3
0.0
C1452
#
0.0033MF
0.0033MF
4
0.0
C1453
#
0.0033MF
0.0033MF
5
GND
6
0.0
CN1001
15P
#
#
CN1003
#
8P
8P
7
16.9
CN1004
#
#
6P
8
0.0
CN1402
#
7P
7P
9
0.0
IC1400
#
TDA1519
TDA1519
IC1401
IC1401
#
TDA1519
TDA1519
pin
volt
R1452
#
10K
8.2K
1
0.0
R1453
#
10K
8.2K
2
GND
TU1002 FSS BTF-FA401
#
FSS BTF-FA401
3
0.0
4
0.0
#: NOT MOUNTED
5
GND
6
0.0
7
16.9
8
0.0
9
0.0
All voltages are in V
K BOARD WAVEFORMS
1
2
2.2 Vp-p (H)
1.3 Vp-p (H)
K BOARD TRANSISTOR
VOLTAGE LIST
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
All voltages are in V
HT BOARD SCHEMATIC DIAGRAM
— 38—