Technics RS-DV290EG Service Manual page 232

SCHEMATIC DIAGRAM-9
C
MAIN CIRCUIT To
on SCHEMATIC DIAGRAM-5/12-C
1 2
CN501
R314
10K
W U V
R893
10K
F
D
7.5V 0V 0V 0V 0V 0V
16 15 14 13 12 11
V DD X1 X0
A
IC891
BU4053BCFE2
SIGNAL SELECTOR
Y1 Y0 Z1 Z0 INH
1 2 3 4 5 6
0V 0V 0V 0V 0V 0V
C
E
B
I 5V
IC501
R508 R509 R510
C9ZB00000431
100K 100K 100K
VIDEO BUFFER
0V 5V 0V 0V
17 16 15 14 13 12 11
GND2 MUTE2 NC
SYNC
TIP
CLAMP
Bias Bias
150K 150K
4dB 4dB 4dB
Bias
6.75MHz LPF 6.75MHz LPF LPF 6.75MHz
150K
2dB 2dB
75 75
Driver Driver
GND2 GND2
18 19 20 21 22 23 24
R
S
T
13 14
B
MODULE CIRCUIT(FP3203)
: POSITIVE VOLTAGE LINE
3 4 5 6 7 8 9 10 11 12 13 14 15
0V
10 9
B
C
Vss G
7 8
0V
0V
3.8V
Q891
DTC114EUA106
SWITCHING
L503 C505
0.68 H 47P
C503
50V1
2.5V 1.8V 5V 2.5V 5V
10 9 8 7 6 5 4 3 2 1
YC MIX MUTE1 Vcc1
GND1 NC GND1
SYNC
SYNC Bias
BIAS
TIP
TIP 150K
4dB
CLAMP
CLAMP
4dB
6.75MHz 4dB
LPF
6.75MHz LPF
LPF 6.75MHz
2dB 2dB 2dB 2dB
75 75 75 75
Driver Driver Driver Driver
GND2 GND2 GND2 Vcc2
25 26 27 28 29 30 31 32 33 34
2V 1.8V 2V 1.8V 2.5V 5V
C510
0.1
R513
2.2K
0.2V
3.8V Q501
A
DTC114EUA106
SWITCHING(WIDE)
H
G
15 16 17
: AUDIO SIGNAL LINE : VIDEO SIGNAL LINE :SURROUND SP. SIGNAL LINE
W 7.5V
N
IC802
R809 NJM4580EDTE1
15K
BUFFER AMP(C/SW)
R801 C801 R805 R807 C80
1K 16V10 10K 22K 47P
B
0V 0V
5 6
4 3
0V
R802 C802 R806 R808
1.8K 16V10 8.2K 22K
A
IC803
NJM4580EDTE1
R837
15K
BUFFER AMP(SL/SR)
R827 C821 R831 R833 C825
100 16V10 15K 22K 47P
D
0V 0V
5 6
4 3
0V
R828 C822 R832 R834
100 16V10 15K 22K
C
IC804
R857 NJM4580EDTE1
15K
BUFFER AMP(FL/FR)
R847 C835 R851 R853 C839
1K 16V10 10K 22K 47P
V
0V 0V
5 6
4 3
0V
R848 C836 R852 R854
1K 16V10 10K 22K
U
E
2.5V
I
5V
H
IC4
NJM78M05FA
GND OUT IN REGULATOR
3 2 1
5V 10V
5V
R43
0.33
18 19 20
:CENTER SP. SIGNAL LINE :SUB WOOFER SIGNAL LINE
7.5V
0V
Q801,802
2SD1328TX
Q303
MUTING
DTC114EUA106
C809 R815 C813
SIGNAL SELECTOR
16V22 1K 16V10
CONT.
Q801
R813
0V
0V 7.5V
D801 3.3K
0.7V
7 8
(-0.5V)
0V 0V 0V
D801,802
8 9 10 11
MA111TX
Q802
R814
D802
3.3K
0.7V
2 1
(-0.5V)
0V 0V
0V
C806 C810 R816 C814
47P 16V22 470 16V10
R810
7 6 5
22K
7.5V 7.5V
C828 Q803,804
0.1
2SD1328TX
MUTING
C829 R841 C833
6.3V47 1K 6.3V47
F
Q803
R839
0V 7.5V 0V
D803 3.3K
7 8
0.7V
(-0.5V)
D803,804
MA111TX
Q804
R840
2 1
D804 3.3K
0.7V
0V 0V
(-0.5V)
0V
C826 C830 R842 C834
47P 6.3V47 1K 6.3V47
E
R838
15K
C842 Q805,806
0.1
2SD1328TX
MUTING
C843 R861 C847
6.3V47 1K 6.3V47
D
0V 7.5V Q805
R859
0V
7 8 D805
3.3K
0.7V
(-0.5V)
D805,806
MA111TX
Q806
R860
D806
3.3K
0.7V
2 1
(-0.5V)
0V 0V
0V
C840 C844 R862 C848
47P 6.3V47 1K 6.3V47
C
R858
15K
(-0.6V)
7.5V
Q807
(7.5V) 0V
UN5111TX
MUTING CONT.
R867
7.5V
47K
IC3
LM2940T5M
OUT GND IN REGULATOR
3 2 1
5V 6V
6V
10V
21 22 23
IC801
C0JBAS000138
R821
100K
SIGNAL SELECTOR
B
0V 7.5V 7.5V 7.5V
12 13 14
R820
100K
4 3 2 1
0V 0V 0V 0V
A
R822
100K
IC805
BA4558FHTT1
VREF
7V 7V 7.5V
5 6 7 8
4 3 2 1
4.2V 4.2V 4.2V
R825
1.2K
Q9
2SB1417PQTA
POWER SUPPLY
2.5V 6V
5.2V
C12
Q8
1000P
FMW1T98
POWER SUPPLY
CONT.
2.5V 5.2V
2.5V 2.5V
1.8V
SL-DV290(EE,GN) MAIN CIRCUIT DIAGRAM
24