Technics RS-DV290EG Service Manual page 106

A
OPERATION CIRCUIT
FL901 (A2BB00000115)
H
1 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
R996
150
Z Y X W V U T S R Q P O N
G
For [GN] area.
R908 R907 R906
4.7K 3.3K 2.2K
F
R912 R911 R910
4.7K 3.3K 2.2K
E
2
3
6
JK903
PHONES 4
3.5mm STEREO
5
7
1
W905
D
C
G
MIC JACK CIRCUIT For [GN] area.
C421
0.1
W401
Q401
6
2SC5398RSTA
5
JK902 MIC AMP
R402 C404
4
MIC2
680 50V3.3
1.8V
6.3mm
B 2
MONAURAL
1
C405
1000P
6
5
JK901
R401
4
MIC1
680
6.3mm
2
MONAURAL
1
A
1 2
FL DISPLAY
M L K J I H G F E D C B A A B C D F G H I J K L M N O P Q R S T U
R905 R904 R903 R902 R901 R925
1.8K 1.5K 1.2K 1K 820 1K
R909 R916 R915 R914 R913 R924
1.8K 1.5K 1.2K 1K 820 1K
For [GN] area.
D974
MA165TA
S
T
CN904
1 2 3 4
1 2 3 4
W904B
R407
IC401
4.7K
3.3V
TA2011S
MIC AMP
2.3V
1 2 3 4 5 6 7
R406 C408
470K 0.022 1.3V 0V 1.9V 0.8V 5.2V
C410
16V10
R410
2.2K
VR401
5K(B)
(MIC VOL)
3 4 5
: POSITIVE VOLTAGE LINE
-30.1V
53 54
-30.1V
-29.3V
A
-29.3V
B
-29.3V
C
-26.3V
D
X
-20.5V
E
-29.3V
F
-29.3V
G
-29.3V
H
-23.5V
E I
-20.5V
J
-23.4V
K
-23.4V
L
-23.7V
M
-20.7V
W N
-29.6V
O
-29.6V
P
-29.6V
Q
-23.7V
R
-26.6V
S
-26.5V
T
5.1V
-29.5V
U
-29.5V
V
-26.5V
W
-17.2V
X
-5.3V
V Y
-10.3V
Y Z
For 0.4V
[GN] 0V
area.
For [GN] area.
C415 For [EE] area.
50V1
R
R416
330
P
D953
LNJ301MPUJAD
R998
(MIC EFFECT CHORUS)
220
For [GN] area.
6 7 8
: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE
A
B
C
A B C D E F G H I J K L M N O P Q R S T
0V:GN
2.6V:EE
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
-25.6V
51 -VP FM / AM 8G 30
4V
5.1V
52 P13 REMOCON 29
0V
53 P14 -30V RDS DATA 28
T 5.5ms.
54 P15 IC901 RDS CLK 27
FM / AM 0.6V
55 P16 C2BBFD000404 HP SW 26
5.1V
P17 4.2V
56 SYSTEM CONTROL/ MIC DET 25
0V
P-P
P18 FL DRIVE VR JOGA
57 24
FM / AM 0V
FM / AM
P19 VR JOGB
58 23
4V F=6MHz
P20 0V 3.3V NC(GND)
59 22
1.4V
P-P
P21 -30V SH REQ
60 21
T 5.5ms. 5.1V
P22 KEY KARAOKE
61 F=6MHz 20
5.1V
P23 KEY TU
62 FM / AM 19
5.1V
P24 V 1
63 DD 18
5.2V 2.3V
64 P25 XC OUT 17
P-P
2.3V
65 P26 XC IN 16
F=32.7kHz
66 P27 FM / AM Vss 15
2.7V
67 P28 FM / AM X OUT 14
5.2V
1.6V
68 P29 X IN 13
P-P
2V
5V
69 P30 RESET 12
P-P
F=32.7kHz 2.2V
70 P31 AC IN 11
F=32.7kHz 0V
P32 SEL/ TUNER
71 10
V 4 SEL TUNER
72 DD 9
5V
P33
73 8
5V
P34
74 7
0V
5.1V
P35 2V /2ms.DIV. ST/ AV.6CH
75 0V 6
5.1V
2V /2ms.DIV.
P36 LC72 CK
76 5
4.6V
5V
P37 LC72 DI/ ST
77 4
0V
78 P38 LC72 CE 3
0V 0V
79 REGIN0 LC72 DO 2
T 10ms.
2.5V
80 REGIN1 CHECK 1
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
R926
2.2K
R919
15K
R991
47K
5.1V
L O F M K I N E
9 10
:MIC SIGNAL LINE
U V W X Y
5.1V
Q901
For [GN] area.
UN4212TA
RESET
0V
5V
A
B
C
D
E
U
J
R956 R957
1K 1K
H
R940
1K
G
R929 1K
A
R930 1K
B
R932 1K
D
R931 1K
C
X901
R953
(6MHz)
100
1
2
3
R954 R952
100K 10M
X902
(32.7kHz)
D902 D901
1SS291TA 1SS291TA
Q
SA-DV290(EE,GN) OPERATION,MIC JACK CIRCUIT DIAGRAM
11 12