Technics RS-DV290EG Service Manual page 250

SCHEMATIC DIAGRAM-9
C
MAIN CIRCUIT
R314
10K
W U
F
D
7.5V
16 15
V
DD
Y1
1 2
0V
C
E
B
I
R508
100K
0V
17 16 15
GND2 MUTE2
Bias
150K
4dB
6.75MHz LPF 6.75MHz
2dB
75
Driver
GND2
18 19 20
13
B
To MODULE CIRCUIT(FP3203)
on SCHEMATIC DIAGRAM-5/12-C
1
2 3 4 5 6 7 8 9 10 11 12 13 14
CN501
V
R893
10K
0V 0V 0V 0V 0V 0V
14 13 12 11 10
X1 X0
A
B
IC891
BU4053BCFE2
SIGNAL SELECTOR
Y0 Z1 Z0 INH
Vss
3 4 5 6 7
0V 0V 0V 0V 0V 0V
5V
IC501
R509 R510
C9ZB00000431
100K 100K
VIDEO BUFFER
5V 0V 0V
14 13 12 11 10
NC GND1
SYNC
TIP
CLAMP
Bias
150K
4dB 4dB
Bias
LPF LPF 6.75MHz
150K
2dB 2dB
75 75
Driver Driver
GND2
21 22 23 24 25
R
S
T
14 15
15
9
C
G
8
0V
3.8V
Q891
DTC114EUA106
SWITCHING
L503 C505
0.68 H 47P
C503
50V1
2.5V 1.8V
9 8 7 6 5 4
YC MIX
NC GND1
SYNC
BIAS
TIP
4dB
CLAMP
4dB
LPF
6.75MHz LPF
2dB 2dB
75 75
Driver Driver
GND2 GND2
26 27 28 29 30 31
2V 1.8V 2V
C510
0.1
A
H
G
16
: POSITIVE VOLTAGE LINE : AUDIO SIGNAL LINE
5V 2.5V 5V
3 2 1
MUTE1 Vcc1
SYNC
Bias
TIP
150K
CLAMP
6.75MHz 4dB
LPF 6.75MHz
2dB
75
Driver
GND2 Vcc2
32 33 34
1.8V 2.5V 5V
R513
2.2K
0.2V
3.8V Q501
DTC114EUA106
SWITCHING(WIDE)
17
: VIDEO S
W
N
R801 C801
1K 16V1
B
R802 C802
1.8K 16V10
A
R827 C821
100 16V10
D
R828 C822
100 16V10
C
R847 C835
1K 16V10
V
R848 C836
1K 16V10
U
E
2
I
H
5V
R43
0.33
18 19