Technics SL-DV290EE, Service Manual

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A
B
C
D
E
F
G
H
25 26 27 28 29 30 31 32 33 34 35 36
SL-DV290(EE,GN) MAIN CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-10
MAIN CIRCUIT
C
JK1
Q11
FMW1T98
P. SUPPLY CONT.
R29 22K
R30
100
D7
MA728TX
R37
100
R39
1K
C23
10V47
IC2
PQ1CZ31H2ZP
DC-DC
CONVERTER
C20
10V47
R28 47K
R31
680
4 5
3 2 1
ADJ ON/ OFF
GND VOUT VIN
D4
MA111TX
C4
16V470
L1
D3
SFPB-72V
C7
6.3V820
R2
8.2K
R3
2.2K
R4
10K
L501
JK501
VIDEO OUT
R505
1
R504
1
R501
1
R502
1
L502
V.GND
S.WOOFER
CENTER
NC
NC
NC
CD Rch OUT
CD A.GND
CD Lch OUT
SUR R
SUR L
DATA
NC
SCLK
D.GND
+B (10V)
CS
CT.GND
CD REQ
SYNC
To SOUND PROCESSOR(SH-DV290)
& CASSETTE DECK(RS-DV290)
JK501
S-VIDEO OUT
R503
75
C501
0.01
C502
0.01
R27
1.2K
R35
1.2K
D.GND A.GND
CT.GND
D18
MA111TX
D17
MA111TX
R41
100
C26
16V10
C29
0.01
C30
1000P
R40
0
Z501
VLP0146-T
R506
75
Z502
VLP0146-T
Z503
VLP0146-T
R507
75
S
T
R
1
2
20
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
DC+10V
R823
100K
R824
100K
C816
16V10
C815
16V10
K
M
L
O
P
F
E
A
B
C
D
L2 L4
Q3
DTC114EUA106
SWITCHING
C3
16V3300
R33
4.7K
R32
47K
D1
1
MA8091MTX
POWER SUPPLY
CONT.
Q13
2SB1218TX
D10
MA1
1
1TX
C19
1000P
POWER SUPPLY
Q12
2SB1417PQTA
D14
MA8082MTX
R38
10
C24
1000P
REGULATOR
Q16
2SD874QRSTX
J F Q G
POWER SUPPLY
Q15
2SB766ATX
C21
1000P
P. SUPPLY CONT.
Q14
FMW1T98
R34
470
D12
MA1
1
1TX
C22
16V10
R36 22K D13
MA1
1
1TX
R44
1.2K
R42
100
POWER SUPPLY
Q7
2SB1417PQTA
C10
1000P
R16
470
D6
MA1
1
1TX
C1
1
16V10
R17
22K
Q6
FMW1T98
P. SUPPLY CONT.
E1
G G
Y C
9.2V
10V 9V
: POSITIVE VOLTAGE LINE
: AUDIO SIGNAL LINE
: VIDEO SIGNAL LINE :SUB WOOFER SIGNAL LINE :SURROUND SP. SIGNAL LINE
:CENTER SP. SIGNAL LINE
9V
10V
9.2V
10V 9V
9V 9.2V
9V
8.5V
9V
0V
5V
4V 1V
6V 10V
6V 5V
5.2V
5.2V
5V
4.5V
5V
5V
6V 5V
5.2V
5.2V
4.5V
5V
5V
5V
8.2V
9.8V 7.5V