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Tuner
SA-DV290EE
Service manual
Technics SA-DV290EE Service Manual page 42
Tuner/amplifier
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B
MAIN CIRCUIT
IC601
RSN311W64B
POWER AMP
26
25
24
0V
0V
C648
1000P
B
A
R603
3.3K
R602
3.3K
R601
3.3K
R604
3.3K
R685
0V
1K
0.7V
Q607
R686
0V
1K
0.7V
Q608
R683
0V
1K
0.7V
Q605
Q605,607,608
N
2SD2144STA
L
MUTING
K
M
G
25
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
23
22
21
20
19
18
17
0V
0V
-51.4V
54.1V
0V
0V
R612
C610
R611
C609
R610
C612
R609
C611
R608
C614
R607
C613
R648
R691
120
68
R647
270
R738
3.9K
Q708
Q709
UN4211TA
2SD2144STA
SWITCHING
SWITCHING
(POWER)
(POWER)
2.1V
0V
0V
0.7V
A B
C
26
27
:AUDIO SIGNAL LINE
7.6V
-10.4V
16
15
14
13
12
11
10
-29.7V
29.4V
-0.2V
0V
0V
56K
56P
R620
120K
56K
56P
R619
120K
150K
15P
R622
120K
56K
39P
R621
150K
56K
47P
R624
150K
56K
R623
47P
120K
4.7V
4.7V
0V
0V
Q601
Q602
Q601,602
2SC5398RSTA
PROTECTOR
D558
R544
MA165TA
10K
0V
Q503
2SC5398RSTA
SWITCHING
D704
1N5402BM21
14.7V
28
9
8
7
6
5
4
3
0V
0V
-29.3V
28.9V
0V
-59.5V
59.5V
D607
R635
1SS291TA
2.2K
0V
D703
1N5402BM21
G
F
E
D
29
30
2
1
0V
0V
31
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