Technics RS-DV290EG Service Manual page 136

: POSITIVE VOLTAGE LINE
-30.1V
-30.1V
-VP
51
-29.3V
A P13
52
-29.3V
B P14
53
-29.3V
C P15
54
-26.3V
D P16
55
-20.5V
E P17
56
-29.3V
F P18
57
-29.3V
G P19
58
-29.3V
H P20
59
-23.5V
P21
60
I
-20.5V
J P22
61
-23.4V
K P23
62
-23.4V
L P24
63
-23.7V
M P25
64
-20.7V
N P26
65
-29.6V
O P27
66
-29.6V
P P28
67
-29.6V
Q P29
68
-23.7V
R P30
69
-26.6V
S P31
70
-26.5V
T P32
71
5.1V
72 V 4
DD
-29.5V
U 73 P33
-29.5V
V 74 P34
-26.5V
W 75 P35
-17.2V
X
76 P36
-5.3V
Y P37
77
-10.3V
Z P38
78
0.4V
REGIN0
79
0V
REGIN1
80
5.1V
7 8
: NEGATIVE VOLTAGE LINE
A
B
C
A B C D E F G H I J K L M N O P Q R S T
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34
FM / AM
T 5.5ms.
IC901
FM / AM
C2BBFD000404
SYSTEM CONTROL/
FL DRIVE
FM / AM
FM / AM
4V F=6MHz
0V 3.3V
P-P
-30V
T 5.5ms.
F=6MHz
FM / AM
5.2V
P-P
F=32.7kHz
FM / AM
FM / AM
5.2V
P-P
2V
P-P
F=32.7kHz
F=32.7kHz
5V
0V
2V /2ms.DIV.
2V /2ms.DIV.
5V
0V
T 10ms.
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
L O F M K I
9
:AUDIO SIGNAL LINE
U V W X
33 32 31
-25.6V
8G
30
4V
5.1V
REMOCON
29
0V
2.6V
-30V RDS DATA
28
2.6V
RDS CLK
27
0.6V
HP SW
26
5.1V
4.2V MIC DET
25
0V
P-P
VR JOGA
24
0V
VR JOGB
23
NC(GND)
22
1.4V
SH REQ
21
5.1V
KEY KARAOKE
20
5.1V
KEY TU
19
5.1V
V 1
DD 18
2.3V R953 100
XC OUT
17
2.3V
XC IN
16
Vss
15
2.7V
X OUT
14
1.6V
X IN
13
5V
RESET
12
2.2V
AC IN
11
0V
SEL/ TUNER
10
SEL TUNER 9
8
5V
7
5.1V
ST/ AV.6CH 6
0V
5.1V
LC72 CK 5
4.6V
LC72 DI/ ST
4
0V
LC72 CE
3
0V
LC72 DO
2
2.5V
CHECK
1
R926
2.2K
R954
100K
R919
15K
R991
47K
D902
1SS291TA
N E
SA-DV290(E,EB,EG) OPERATION CIRCUIT DIAGRAM
10 11
5.1V
Q901
UN4212TA
RESET
0V
5V
A
B
C
D
E
R
J
R956 R957
1K 1K
H
R940
1K
G
R929 1K
A
R930 1K
B
R932 1K
D
R931 1K
C
X901
(6MHz)
1
2
3
R952
10M
X902
(32.7kHz)
D901
1SS291TA
Q
12