Technics RS-DV290EG Service Manual page 252

SCHEMATIC DIAGRAM-10
C
MAIN CIRCUIT
Q16
2SD874QRSTX
REGULATOR
7.5V 9.8V
8.2V
J F Q G
9V
Q15
2SB766ATX
POWER SUPPLY
5V 6V
C21
5.2V
1000P
Q14
FMW1T98
P. SUPPLY CONT.
5V 5.2V
5V
5V
4.5V
Q7
2SB1417PQTA
POWER SUPPLY
5V 6V
C10
5.2V
1000P
Q6
FMW1T98
5V 5.2V P. SUPPLY CONT.
5V
5V
4.5V
25
: POSITIVE VOLTAGE LINE
R38
10
Q12
R37 2SB1417PQTA
100
POWER SUPPLY
9V 10V
C19
9.2V
1000P
Q11
9V 9.2V FMW1T98
P. SUPPLY CONT.
9V 9V
8.5V
R44
1.2K
ADJ
R42
100
GND
L4 L2
R17
22K
D7
MA728TX
10V
26 27
: AUDIO SIGNAL LINE
: VIDEO SIGNAL LINE
DC+10V
Q13
2SB1218TX
POWER SUPPLY
R30 R31 CONT.
100 680
9V
D4
MA111TX
5V
Q3
DTC114EUA106
1V 4V
SWITCHING
4 5
ON/ OFF
IC2
PQ1CZ31H2ZP
DC-DC
CONVERTER
VOUT VIN
3 2 1
6V 10V
L1
28
:CENTER SP. SIGNAL LINE
:SUB WOOFER SIGNAL LINE :SURROUND SP. SIGNAL LINE
R503 Z501
75 VLP0146-T
S
R506
Z502
75
VLP0146-T
T
R
Z503
R507
VLP0146-T
75
K
M
L
O
P
C816
16V10
A
B
C815
16V10
C
D
10V
E
F
9.2V
R32
47K
0V
CT.GND
R40
0
SL-DV290(EE,GN) MAIN CIRCUIT DIAGRAM
29
L501
JK501
VIDEO OU
L502
Y C
JK50
S-V
G G
JK1
20 SYNC
19 CD REQ
18 CT.GND
17 CS
16 +B (10V)
15 D.GND
14 SCLK
13 DATA
12 NC
11 V.GND
10 S.WOOFER
9 CENTER
8 NC
7 NC
6 NC
5 CD Rch OUT
4 CD A.GND
3 CD Lch OUT
2 SUR R
SUR L
1
D.GND A.GND
C30
1000P
C29
0.01
C26
16V10
R41
100
D17
MA111TX
D18
MA111TX
E1
30 3