Technics Sa-dv280eg Sch
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Transcript of Technics Sa-dv280eg Sch
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From POWERTRANSFORMER
1
8
W501
2
3
4
5
6
7
9
12
13
14
15
16
17
18
A.GND
+B(10V)
SUR L
SUR R
19
11
10
CT.GND
SH FL1
DATA
D.GND
TUNER L/C
TUNER Rch
Lch IN
Rch IN
S.W
MIC
-B(-10V)
V.GND
CE/REQ
CLK
SH FL2
20SYNC
+B5
Rch
Rch
-B3
To SOUND PROCESSOR(SH-DV280)BLOCK DIAGRAM
LC72
CE
LC72
DI/S
T
LC72
CK
DAT
A1
CLK
1
DAT
AIN
CE
1
3 4 5
LC72
DO
2
C2BBFD000317IC901
SYSTEM CONTROL / FL DRIVE
Rch
94
SH
CS
97
SH
CK
9596
SH
DO
SH
DI
SH
SY
NC
100
SD
21
SH
RE
Q
19202122 23
AMMIX
12
LEVELDET
FM IF
S-CURVE
2
3
REG
4
13
AGC
COMP
68 1110
AMRF
AMP
AMIF
AM/FMIF
BUFFER
24
1
FMDET
AMOSC
BUFEER
ALC
TUNINGDRIVE
18
BUFFERAMP
FM ANT
RF AMP FMMIXER
FM OSC
9
Vcc
+B(FM)
FM IFAMP
+B2AMIFT
1
20
7.2MHzXIN
XOUT
PHASE DETCHARGE PUMP
CE 23DI
4CL
D0 5
98710
BO
4
BO
3
IO1
15
VD
D
16 PD
IFIN11
BO
2
1/214
13
FM IN
AM IN
Powersupply(FM:ON)
+B2
+B1
+B(FM)
SD
STEREOSWITCH
17
FM / AM I F AMP,DET / AM OSC,MIX / FM MPX(LA1833MN)
15
PILOTCANCEL
PHASEDET
16
VCO FFFF PILOTDETFF
AMDET
DECODER
BO1 6
IO2
12
19 Vss PowerON
RESET
PLL FREQUENCYSYNTHESIZER(LC72131M)
+B2
GND
5 7
ST
MO
NO
FM
/AM
SD
FM
DE
T
FM IFIN
AMOSCOUT
AF
C
AM
OS
C
AM
RF
IN
AG
C
AM
OU
T
DE
TO
UT
PIL
OT
IN MP
XIN
PIL
OT
OU
T
Lch
14
Rch
17
18
AIN
AOUT
AMANTCOIL
AMOSCCOIL
AM ANT
+B2
ST
RQ
AM
IFINA
MM
IXO
UT
Rch
IFT
+B(FM)
+B(FM)
+B(FM)
FM:ONDET
CE1
DATA1
CLK1
DATA IN
SW CONT.
12
X0
X1
14
A B C
11 10 9
G8
2
13
BU4053BCFE2IC201
SIGNAL SELECTOR 1
15Y1
Y0
VDD16
+B4
VSS7
-B3
6
ST
/AV.
6CH
SD
Z101 TUNER UNIT (RAN0005EM-2)
REFERENCEDIVIDER
SWALLOW COUNTER1/6,1/17 4BIT
12 BITPROGRAMMABLE
DIVIDER
DATA SHIFTREGISTER LATCH
UNIVERSALCOUNTER
MUTING
Q605
MUTING
Q607(Q608)
93
MU
TE
3
MUTINGCONT.+B4
Q902
10
SE
L/T
UN
ER
MIC
DE
T
25
+B8
SA-DV280(EB,EG) BLOCK DIAGRAM
SPEAKERS
R chPHONES
VR901(VOLUME)
24 23
VR
JOG
A
VR
JOG
B
KEYSWITCH
(S901~908,910~915)
19 20
KE
YT
U
KE
YK
AR
AO
KE
Q901,D904 RESET
12
RE
SE
T
+B8
90
VD
D2
+B9
VD
D1
VD
D3
VD
D4
18 46 72
C2BBFD000317IC901
SYSTEM CONTROL / FL DRIVE
29
RE
MO
-C
ON
Z901(REMOTESENSOR)
+B8
1~8G
30~37
P1~
38
38~45,47~5052~71,73~78
FL901FL DISPLAY
D931,933
79
RE
GIN
0
82
TIM
ER
83
S.W
LED
D951(DIGITAL
S.WOOFER)
81
STA
ND
-BY
D954( PLAY/REC) D306
( )
1621
GND
104 7
5
1(2)
6
3
20
15
19(18)
26(25)
23
24
RSN311W64BIC601
POWER AMP
+B3D601
-B1
D602
-B2
Q601,602
9
+B7
13
PO
WE
R
98
ED
ET
HP
SW
26
SA
SY
NC
AC
IN
88
PO
WE
RP
OW
ER
11
+B8
1
CH
EC
K
DE
T
28
RD
SD
ATA
RD
SC
LK
27
14
N
Q503,D558
51
-VP
-VP
86
MU
TE
D906PRO-
TECTOR
D974
SWITCH-ING
D907
RE
GIN
122
8
11(12)
16 17
X901(6MHz)
XC
IN
XC
OU
T
13 14
X902(32.7kHz)
XIN
XO
UT
80
MUTING
Q606
AC
IN
POWER CONTROLCIRCUIT
POWER CONTROL/PROTECTION CIRCUIT
C1BB00000527IC151
RDS SIGNAL DEMODULATOR
CLOCKRECOVERY(1187.5kHz)
DATA
CLK
IDRRDS-IDDETECT/
RAM
57kHzBPF
(SCF)
PLL(57kHz)
VREF
CINFLOUTVREFVDDA/D
VssA/D
MPX IN
TEST
XOUTXIN
OSC/DIVIDER
CLK(4.332MHz)
89
7
2
4,10
3,11
+B2
1 5 6
14
15
16
X151(4.33MHz)
REFERENCEVOLTAGE
TEST
ANTIALIASINGFILTER
SMOOTHINGFILTER
DATADECODER
MODE
12 13
RST
91M
UT
E2
MUTINGCONT.+B5
Q612
MUTING
Q609(Q610)
SURROUND(8 )Ω
CENTER(8 )Ω
HF(6 )Ω
LF(8 )Ω
Q551,554,555
SIGNALLEVEL DET.
-B3 +B4
MFAN MOTOR
MOTORDRIVE
Q553,556,557
15
Vss
89
Vss
2
SA-DV280(EB,EG) BLOCK DIAGRAM
PO
WE
RT
RA
NS
FO
RM
ER
F1
AC IN
L701
T701
D702,704,752,754,755
Q707
+B4
-B3
Q702,705
Z701RL702
Q791
PO
WE
RT
RA
NS
FO
RM
ER
T702
D741~744
-B1
-B2
Q703,704
+B7
D701,703,751,753,761
Q701
+B1
Q723
+B2
Q711,712,725 D717~720
+B5
D705-VP
FL1
FL2
FL DISPLAY(FL901)
Q708,709
+B3
AC IN
SHSYNC
POWER
Q726
+B6
+B8
+B9
D902
D901
SASYNC
D746
REGULATOR/STABILIZER
REGULATOR
REGULATOR
REGULATOR
SWITCH-ING
REGULATOR
REGULATOR
RELAYDRIVE
+B6
D740
REGULATOR/STABILIZER
SA-DV280(EB,EG) BLOCK DIAGRAM
NOTES : SIGNAL LINE: FM SIGNAL: AM SIGNAL: FM OSC SIGNAL: AM OSC SIGNAL: AUDIO SIGNAL
( ) indicates pin No. Right channel.
1 2 3 4 5 6 7 8 9 10 11 12 13
A
B
C
D
E
F
G
H
SA-DV280(EB,EG) OPERATION, MAIN P.C.B.
Note: This printed circuit board diagram may be modified at any time with the development of new technology.
MAIN P.C.B.B
10987654321
D60
7R
635
R71
9J
J
W902A
JJ
J
J
J
J
J
15
13
11
9
7
5
3
1
14
12
10
8
6
4
2
C664C725
JJ
JJ JJ
J
J
JJ
J
J J JJ
J
J
R23
0
C740
C73
3
C73
5
R76
4R
763
D737 BCE
Q723
W901A
W50120
18
16
14
12
10
8
6
4
2
19
17
15
13
11
9
7
5
3
1
15
13
11
9
7
5
3
1
14
12
10
8
6
4
2
R694
R76
1
R696
R695
J
J
J
J
JJ
D65
7
D65
9
C70
5
D611
BCE
Q612
JJJJ
JJJJ
J
J
J
J
C737
C70
6
J
R77
6
R738
R739
R708E C B Q708
E C B Q709ECB
Q707
D72
1
C70
7
C70
8
C50
9
C51
0
C20
2
C714
C73
1
C74
1
D720
D719
D71
8
D70
5
D71
7 C71
5
C60
2 C65
6
C65
5
C55
4
C601
C555
C622
C660
C659
C371
C551
E C BQ609
E C B
Q610
E C BQ554
E C BQ607E C B
Q608
E C BQ606
E C BQ605
E C B
Q555
BCE
Q602
BCE
Q551
BCEQ503
BCE
Q601
J J
J
J
1234567891011CP101
E602
R605R606R617R618R684R683
R604R603R686R685
R60
1R
614
R60
2
J
JJJ
JJ
J
J
J
J
J
JJJJ
J
R693R692
R56
4
R22
9
R62
8
R68
8R
687
R51
2R
511
R50
9
R20
4R
203
R727
R211
R51
0
R56
3
R558
R607
R608
R560
R569
R598R597
R570
R561
R591
R559R557
D55
5D552
D757
D658
D551
D75
6
C55
0
C647
C605
C606
C610
J JJ
J J
J E C BQ704
E C BQ703
C72
1
R572R544
R610
R619
R612R691
R624
R620R546R547
R638
J
J
C60
4
C60
8
C60
3
C60
7C
649
C6
09
C65
0C612
R627
C613
R555C614
C723
C552
C648
C619
C61
1
C72
4
R62
1R
615
R63
1R
632
R55
2R
551
R60
9
R61
1
R63
7R76
9R
721
R72
2
R64
8
R64
7
R76
7
R62
2
R55
6
R62
3
R79
7
R79
6
R72
9
R20
2R
205
JJ
C616
C617
C618
J
D558
J
J
D72
5
IC6012625242322212019181716151413121110987654321
J
J
J
J
J
J
JJ J
J
JJ
J
J
J
J
J
J
J
J
J
JJ
J
J
J J
J
JJ
W721A
W722A
10987654321
4321
J
J
J
C70
9
C76
1
D755
D754
D761
D753
D702
D70
4
D752
D701
D751
D703
D601
D602
C704 C701
C703C702
J
J
J
J
J
JJ
J
J
J
JJ
J
J
J
J
E601L602
L601
L605
L606
C63
9
C63
7C
635
C63
6C
632
JK601
JK602
1 2 3 4CP602
5 6 7 8
J
JJ
C62
6
C62
0
C63
0
C62
1
C63
1
C64
2
R651
R642R652
R650
R649
R639
R64
1R64
0
C627C629
C628
C732
C641C640
To SOUND PROCESSOR
LF(8 )Ω
HF(6 )Ω
LF(8 )Ω
HF(6 )Ω
CN781
N
Rch
Lch
SPEAKERS
D58
2
D58
1
D583
D553
D554
E C B
Q553
E C B
Q557C559 R568
R566
R56
7
1 2
JK551
E C BQ556
C20
1
158
910 1516
IC201
D20
1
1 2 3 4 5 6 8 910 1112CP601
7
(REP3337E-M)
NN
C556NN
OPERATION P.C.B.AVR901
(VOLUME)
C902
C92
8
C92
2
C92
0
R92
9
R98
8
R99
1
R97
5
R97
4
R93
4R
937
R93
0R
931
R918
R957R919
R932
R956R987
C915
D906
JJ
J
J J
J
J
JJ
J
J
J
J
J
J
JJ
J
J
J
J
R99
5R
942
R94
1
R91
2
W902B15
13
11
9
7
5
3
1
14
12
10
8
6
4
2
S913
D95
1
W901B15
13
11
9
7
5
3
1
14
12
10
8
6
4
2
D90
2
D90
1J
R92
6
R99
3
R95
8
R969
R959 R997
R996R990R
936
R93
5
R99
9
R95
4
C92
1
C903
D973
R939R960
R986
JJJ
J
J
J
C92
6
C90
5
D93
3D931
D90
5
J
L901
L902
JJ
C90
1
FL90112
56789
1011121314151617181920212223242526272829303132333435363738394041424344454647484950
5354
L153
JJ
J
R15
5
15
1015
2025
3035
4045
50
5560
31
51
65
7570
808185
9095
100
IC901
R95
3
R95
1
R94
3R
961
R92
4R
925
R92
2
R92
1
J
J
J
R952
R976
R928
R950
R945
R962 R949
C91
2
C90
8 C90
7
C925
C909C904
C911
C910
D907
J
J
J
J
J321
X901
J
J
X902
C914
C916
C918
BCE
Q901
R15
1R
152
R15
3R
154
L152
R158
C15
2
C15
3
C154
L151
JC919
C151
C927Z901
(SENSOR)
D15
1
C16
0
C15
5
C15
6
X15
1
IC151
158
910 1615
C15
7
C15
9R
944
R946
C92
4
C91
7
D97
4
C15
8
S901( / )
D306( )
R90
1
J
S904( PLAY/ REC)
R904
R157
R903
R902
S902(CLOCK/TIMER)
C923
JK903(PHONES)
2
1 43
56
7
W905
C39
5
C39
6J
R90
6R
905
S907(SET)
S906(TUNING MODE)
S905(FM AUTO/
MONO)
S903(—DEMO)
J
J
J
JJ
R91
0R
909
S908(INPUT
SELECTOR)S910
(TUNING )
D90
4
R911
R994
R940
R907
S912(TUNER/BAND)
J
S911(TUNING )
R91
4 R91
5
R91
6R
913
J
S915(RDSDISP MODEPTY)
S914(RDSDISP MODEPS) J
DIGITALS.WOOFER
D95
4(
P
LAY
/
R
EC
)
321
1
2
3
ECB
Q902
D961R966
R965
(REP3337E-M)
N
C93
1
1 2 3 4 5 6 7 8 9 10 11 12 13
A
B
C
D
E
F
G
H
SA-DV280(EB,EG) AC IN, POWER TRANSFOMER(A)/(B), POWER SUPPLY P.C.B.
Note: This printed circuit board diagram may be modified at any time with the development of new technology.
POWER SUPPLY P.C.B.C
BCE
Q701
BCE
Q702
BCE
Q711
BCE
Q712
BCEQ725
E C BQ705
R725R723
C71
9
C717
C71
0
C72
0
W701B
D72
3
C71
8C
722
C73
4R
720
R72
4
R76
8
R749
R765
R753
R754
D758
D73
9
D73
8
J
D730
10987654321
(REP3337E-M)
POWER TRANSFORMER (A) P.C.B. E
W722BW721B123456789
10
1234
R793
CN710
CN709
CN708
CN707
CN706
CN705
CN704
CN703
CN702
CN701
FP792
R798
FP791
J
POWER TRANSFORMER (B) P.C.B. F
CN711
CN713
CN712
W1
W2
W3
J
J
J J
J J
T701(Power transformer)
(REP3337E-M)REP3338A-S . . . [EG]REP3338B-S . . . [EB]
JK701JK603
L701
FC
1F
C2
F1
T2A
Z701
C791
RL702
1
2
4 3
1234
CN601
56789
101112
1234
CN602
5678
T702(Power transformer)
R794
R773
R774
R795
R77
1R
772
R71
2
E C BQ791
E C BQ726
D500
D71
1
D74
6
D740
J
J
C754C758
D74
5
C75
9
R777
D74
2
D74
3
D74
1
D74
4
J
J
J
J
J
J
JC
755
C753
C634
W1
W2/W3 D74
7
AC IN P.C.B.D
AC IN
C644
C646C651
C652
C624
C633C625
C64
5
C64
3
R646
R645
R64
4R
643 L603
L604
C
SR
SL
230V 50Hz . . . [EG]230-240V 50Hz . . . [EB]
REP3338A-S . . . [EG]REP3338B-S . . . [EB]
CENTER/SURROUNDSPEAKERS
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
SA-DV280(EB,EG) OPERATION CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-1
S90
4(
PLA
Y/
RE
C)
FL901 (A2BB00000084)
1754632
T
S
S90
8( I
NP
UT
SE
LEC
TO
R)
S90
7( S
ET
)
S90
6( T
UN
ING
MO
DE
)
S90
5( F
MA
UT
O/M
ON
O)
JK903PHONES3.5mm STEREO
R99
715
0
R996150
D97
3M
A40
30M
TAC
921
1000
P
C92
235
V33
C92
025
V22
R92
210
KR
921
10K
R94
42.
2K
R9124.7K
R9113.3K
R9102.2K
R9091.8K
R9161.5K
R9151.2K
R9141K
R913820
R9073.3K
R9062.2K
R9051.8K
R9041.5K
R9031.2K
R9021K
R901820
FL DISPLAY
1 6 8 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 53 542 5 7 9
W905
S90
1(
/)
C92
825
V22
NOTE:The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"indicates the schematic diagram serial number located on the left corner in the schematic diagram.A OPERATION CIRCUIT
C91
925
V22
C92
725
V22
C39
60.
047
C92
30.
1
C39
50.
047
D974MA165TA
C90
747
0P
C92
40.
1
C90
40.
01
R9241K
C90
847
0P
R9251K
S91
4( P
S)
S91
5( P
TY
)
S91
0(T
UN
ING
,)
S91
1( T
UN
ING
,)
S91
2(T
UN
ER
/BA
ND
)
S91
3(D
IGIT
AL
S.W
OO
FE
R)
(RDS DISP MODE)
A B C D
E
F G H I J K L M N O P Q R S T U
X
W
V
ABCDEFGHIJKLMNOPQRSTUVWXYZ
S90
2( C
LOC
K/T
IME
R)
S90
3(-
DE
MO
)
IC901C2BBFD000317SYSTEM CONTROL/FL DRIVE
CBA
Q901UN4212TARESET
R93
610
0
R91915K
R99147K
R91
810
KR
928
47K
L902
1H
D9011SS291TA
L901
10H
R95
133
0K
R95210M
ABCDEFGH
IJKLMNOPQRST
UV
WXYZ
R99
310
0K
D93
1M
A16
5TA
D93
3M
A16
5TA
R99
010
0K
C91
66.
3V10
0
D95
1LN
J301
MP
UJA
D(D
IGIT
AL
S.W
OO
FE
R)
R99
522
0
D95
4S
ELS
5923
C(
PLA
Y/
RE
C)
R98
61.
5K
D30
6S
ELS
5223
C(
)R
939
1.5K
C90
510
00P
C90
16.
3V10
0
R93
510
0R
934
100
R98
81K
R93
710
KR
987
1K
R9262.2K
C91
20.
1
R954100K
C92
610
00P
R96
01.
5KR
958
1K
R99
910
0K
R95
947
R96
92.
7K
D9021SS291TA
C90
30.
01
C90
210
V10
00
X902(32.7kHz)
C91
118
P
C91
020
P
X901(6MHz)
1
3
2
D90
51S
S29
1TA
EF IKL M NO Q
R9401K
R929 1KR930 1KR932 1KR931 1K
R97
610
0K
R9561K
R9571K
C91
50.
01C
925
1000
PR953 100
AB
CD
G
H
J
C91
450
V2.
2D
904
MA
165T
A
ABC
DE
A B C D E F G H I J K L M N O P Q R S T U V W X
1
11
21
2
12
22
3
13
23
4
14
24
5
15
25
6
16
26
7
17
27
8
18
28
9
19
29
10
20
30
3132333435363738394041424344454647484950
515253545556575859606162636465666768697071727374757677787980
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
-VPP13P14P15P16P17P18P19P20P21P22P23P24P25P26P27P28P29P30P31P32VDD4P33P34P35P36P37P38REGIN0REGIN1
8GREMOCONRDS DATA
RDS CLKHP SW
MIC DETVR JOGAVR JOGBNC(GND)SH REQ
KEY KARAOKEKEY TU
VDD1XC OUT
XC INVss
X OUTX IN
RESETAC IN
SEL/ TUNERSEL TUNER
ST/ AV.6CHLC72 CK
LC72 DI/ STLC72 CELC72 DO
CHECK
STA
ND
-BY
TIM
ER
S.W
.LE
DLO
UN
GE
CH
OR
US
MU
TE
NC
PO
WE
RV
ss2
VD
D2
MU
TE
2N
CM
UT
E3
SH
CS
SH
DO
SH
DI
SH
CK
ED
ET
CR
TIM
ER
SD
VD
D3
P12
P11
P10 P9
P8
P7
P6
P5
P4
P3
P2
P1
1G 2G 3G 4G 5G 6G 7G
R99
410
0K
U
R94
94.
7KR
950
100
:AUDIO SIGNAL LINE: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE
5.1V
5.1V
2V/2ms.DIV.
5V
0V
5V
0VT 10ms.
2V/2ms.DIV.0V
5V
-30.1V
-30.1V-29.3V-29.3V-29.3V-26.3V-20.5V-29.3V-29.3V-29.3V-23.5V-20.5V-23.4V-23.4V-23.7V-20.7V-29.6V-29.6V-29.6V-23.7V-26.6V-26.5V
5.1V-29.5V-29.5V-26.5V-17.2V-5.3V
-10.3V0.4V
0V
-23.
4V-2
0.5V
-26.
3V-2
6.3V
5.1V
-23.
4V-2
0.5V
-26.
2V-2
9.2V
-26.
2V-2
6.2V
-26.
1V-2
6.3V
-23.
5V-2
3.5V
-25.
6V-2
7.5V
-27.
5V-2
5.5V
-23.
5V
-25.6V5.1V2.6V2.6V0.6V5.1V0V0V
1.4V5.1V5.1V5.1V2.3V2.3V
2.7V1.6V5V2.2V0V
5.1V5.1V4.6V0V0V2.5V
0V
5V
0V
5.1V
3.3V
1.9V
1.9V
1.4V0V
5.1V
5.1V
4.8V0V0V0V0V0V0V
FM / AM
-30V
4V
T 5.5ms.
0V
0V4V
T 5.5ms.-30V
FM / AM
3.3VP-P
F=6MHz
FM / AM
4.2VP-P
F=6MHz
FM / AM
5.2VP-P
F=32.7kHz
FM / AM
5.2VP-P
F=32.7kHz
FM / AM
2VP-P
F=32.7kHz
FM / AM
13 14 15 16 17 18 19 20 21 22 23 24
SA-DV280(EB,EG) OPERATION, MAIN CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-2
W901B
W902B
IC151C1BB00000527RDS SIGNALDEMODULATOR
1 2 3
X151
R1581K
R15
410
0K
R15
310
0K
123456789
101112131415
B ACOM
123456789
101112131415
Q902UN411FTAMUTING CONT.
A B C
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16VREF
HPX IN
VDDA
VssA
FL OUT
C IN
TEST
X OUT
IDR
RDCL
RDDA
RST
MODE
VDDB
VssB
X IN
R96
222
K
VR901EVQVBXFK124B
(VOLUME)
R94
510
0
R96
122
KR
943
100
C91
70.
01
C15
510
00P
C15
310
00P
C16
010
00P
C15
96.
3V47
R15
21KR15
11K
C15
456
0PC
158
6.3V
47
C15116V10
D907MA165TA
M
BC
R9461K
C90
910
00P
C91
86.
3V10
0
D E A
R9411K
L153
1H
R15
512
0D
151
MA
4051
MTA
L151100 H
L152
100
H
C15
647
P
C15
747
P
ABCDEFGHI
JKL
NO
Q
S
T
A OPERATION CIRCUIT
R94
22.
2K
R9741K
C93
116
V10
R9653.9K
R9663.9K
D96
1M
A40
75M
TAR
975
22K
D906MA165TA
U
N
1
2
3
Z901B3RAD0000028(REMOTE SENSOR)
R15
71K
C152330P
W902A
W901A
CP101
C
F
G
B
AED
DETRch IN
CELch IN
DIDOCL
+B(2)SD
+B(1)T.GND
Q7072SB1417PQTAREGULATOR
Q7232SC3940AQSTAREGULATOR
R7634.7K
R230 1K
R229 1K
D72
1M
A43
00M
TAR
708
4.7K
C70
70.
047
C70
635
V10
C73
750
V10
0
ToSOUNDPROCESSOR(SH-DV280)
To TUNER UINTon SCHEMATICDIAGRAM-5/11,12-A
C73
50.
047
BA
R56
32.
7K
R56
42.
7K
C66016V10
C65916V10
R61
54.
7K
R61
44.
7K
R6313.9K
R6323.9K
C2020.1
R20
310
0K
R20
410
0K
C20
10.
1
C60216V10
C70
80.
047
R211270
D20
1M
A40
56M
TA
R6871.5K
R6881.5K
Q605,6062SD2144STAMUTING Q605
Q606
R68
31K
R61
74.
7K
21
3456789
1011
CBAX0X1VDD
GVssINHZ0Z1Y1 Y0
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
IC201BU4053BCFE2SIGNAL SELECTOR
C65516V10
C65616V10
R60
64.
7K
R60
54.
7K
2
15
3456789
1011121314
1
2
15
3456789
1011121314
1
20
21
3456789
10111213141516171819
K
LM
I
J
EF
CDEFG
EFG
ABCD
AB
G
H
C60
116
V10
R5982.2K
R5972.2K
R20
510
0K
HG
R20
210
0K
B
C
D
E
F
C50
90.
01C
510
0.01
R6931K
R6921K
C66
416
V10
C72
516
V47
A
C
R69
647
K
Q609,6102SD2144STAMUTING
Q609
Q610
Q612UN411FTAMUTING CONT.
B
CR69422K
R51147
R50947
R512 47 R510 47
W501
D719RL1N4003N02
D720RL1N4003N02
D717RL1N4003N02
D718RL1N4003N02
H
D
C
R695470
D61
1M
A40
51M
TA
C74
016
V10
C73
30.
047
D73
7M
A40
82LT
A
R764330
MAIN CIRCUITB
C7311000P
C74
10.
1
TUNER Lch/CTUNER Rch
A.GNDLch INRch IN
+B(10V)SUR LSUR R
S.WMIC
-B(-10V)V.GNDD.GND
CS/ REQCLK
DATACT GND
SH FL1SH FL2
SYNC
R6033.3K
A
B
B
R68
41K
A
C71
525
V68
00
C71
410
00P
D705RL1N4003N02
A
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
-30.
1V
5.1V
:AUDIO SIGNAL LINE
6V
7.6V
3.3V
0V
3.3V
2.6V
2.6V
0V
5.1V
2.5V2.7V
2.5V
2.5V
5.1V
2.5V
2.5V
14.7V
10.4V
-37.3V-30.1V
-30.7V
14.7V7.2V
7.8V
-10V
-10V
0V
0V
-10.2V
5.1V
4.9V0V
-10V
0V0.7V
5.7V 0V 0V 0V 0V 0V
6V
7.2V
7.6V-10.4V
0V 0V -10.4V
: FM SIGNAL LINE: AM SIGNAL LINE
25 26 27 28 29 30 31 32 33 34 35 36
SA-DV280(EB,EG) MAIN,POWER SUPPLY CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-3
M
Q708UN4211TASWITCHING(POWER)
Q601 Q602
D75
6M
A70
0ATA
C60
347
0P
C60
447
0P
C60
747
0P
C60
847
0P
C64
910
00P
C65
010
00P
C60
510
00P
C60
610
00P
C6481000P
C61
70.
01
R63
715
K
R63
868
K
R619 120K
R622 120K
R621 150K
R624 150K
R620120K
R612 56K
R611 56K
R610 150K
R609 56K
R608 56K
R607 56K
C610 56P
C609 56P
C612 15P
C611 39P
C614 47P
C613 47P
R62
747
0K
C61
650
V0.
47
N
D60
1S
B36
0L65
08
D60
2S
B36
0L65
08
D75
4R
L1N
4003
N02
C76
10.
1
D70
11N
5402
BM
21C
709
0.1
IC601RSN311W64BPOWER AMPD
757
MA
700A
TA
123456789101112131415181920212223242526 1617
R6043.3K
R6013.3K
R6023.3K
R61
84.
7K
Q601,6022SC5398RSTAPROTECTOR
D6071SS291TA
L
K
D65
8M
A16
5TA
D65
7M
A16
5TA
B
A
R6851K
R6861K
Q607, 6082SD2144STAMUTING
Q607
Q608
C70
50.
01
G
R77
610
K
Q7092SD2144STASWITCHING(POWER)
R7383.9K
R73
947
K
C62
210
V10
0
D65
9M
A16
5TA
D75
11N
5402
BM
21
D7031N5402BM21
D75
3R
L1N
4003
N02
D76
1R
L1N
4003
N02
D75
5R
L1N
4003
N02
D75
21N
5402
BM
21
D70
21N
5402
BM
21
D7041N5402BM21
G
F
E
D
A B C
D558MA165TA
R54410K
R57
215
K
R648120
C61
80.
01
R6352.2K
C61
90.
1
Q5032SC5398RSTASWITCHING
C70
435
V47
00C
702
35V
4700
C70
335
V47
00C
701
35V
4700
R76
122
0
R62
822
K
R69168
R647270
R623120K
CN781
F
C
A
B
D
E
Q5512SA1995RSTASIGNAL LEVEL DET.
Q5552SD2144STASIGNAL LEVEL DET.
Q7022SB1548PQAUREGULATOR
Q7252SC5398RSTASTABILIZER Q705
2SA1995RSTASTABILIZER
Q7012SD2374PQAUREGULATOR
R55
610
0K
R55
710
KC
721
10V
100
D72
5M
A40
82LT
A
R729220C
723
0.04
7
C6391000P
C6401000P
C6411000P
C6421000P
C7320.022
C6471000P
D73
8M
A16
5TA
D73
0M
A40
91H
TA
R768100
R72
43.
9KC
718
25V
100
D72
3M
A41
50H
TA
R72
35.
6K
C71
90.
047
R72510
C72
40.
047
C71
00.
047
R54
618
K
R55
118
K
R55
247
K R55
522
K
C55
00.
01
D552MA165TA
D555MA4100MTA
R54
718
K
E602
E601
R74
91K
D73
9M
A16
5TA
POWER SUPPLY CIRCUITC1 1032 4 5 6 7 8 9
W701B
1 1032 4 5 6 7 8 9
R72
03.
9K
C73
450
V3.
3
D75
8M
A16
5TA
C72
225
V10
0 C72
00.
047
C71
716
V33
MAIN CIRCUITB
G
R76
522
0
N
R56
910
K D55
4M
A16
5TA
C37
16.
3V10
0
Q5562SC5398RSTASWITCHING
R568100
D55
3M
A70
0ATA
C55616V10 C
555
16V
10
Q5572SA1995RSTAMOTOR DRIVE
Q5532SD2144STAMOTOR DRIVE
R5702.2M
R56
010
0K
C5590.01
D58
1R
L1N
4003
N02
R56
722
FAN MOTOR
JK551
R56668K
Q5542SA1995RSTASIGNAL LEVEL DET.
M
R71
93.
3K
Q703,7042SD2137PQTAREGULATOR
R7962.2
Q703
Q704
R76927
R72
73.
9K
C55
416
V22
0
R561100K
C5520.01
R5594.7K
R5914.7K
C55
150
V2.
2
D55
1M
A16
5TA
1 2
D58
3R
L1N
4003
N02
N
R72
14.
7
R7222.2
AB
R75
30.
47
R7540.47
Q711,7122SB1548PQAUREGULATOR
Q711
R7972.2
R76727
R5582.2K
D58
2R
L1N
4003
N02
Q712
: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE
7.6V-10.4V
0V0V59.5V-59.5V0V28.9V-29.3V0V0V0V0V-0.2V29.4V-29.7V0V0V54.1V-51.4V0V0V0V0V
0V
0V5.1V5.1V
0V0V
0.7V0V 0V
2.1V
14.7V
0.7V0V
0.7V0V
29.2V
29.2V14.7V
15.2V
-30.1V
-11V
-10.4V
-11V
-0.6V
14.1V
13.6V
9.6V
10.2V
10.4V
-10.4V
14.7V
7.6V7V
0V
7.6V
0.3V-10.4V
-10.4V
-10.4V
7.6V
7.6V
6.8VFAN ON:1.6V
0V
FAN ON:0V0.5V
FAN ON:0V4.7V
0V
0.5V
8.1V
8.1V
30.1V
30.1V7.6V
7.6V
0V
10.4V
13.6V
10.4V 14.1V
13.6V
A
B
C
D
E
F
G
H
37 38 39 40 41 42 43 44 45 46 47 48
SA-DV280(EB,EG) MAIN, AC IN, POWER TRANSFORMER(A),(B) CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-4
L601
21
3456789
101112
21
345678
R63910
C62
10.
1
EF
D
CP601
CP602
R64
110
AB
IJ
C
C63
10.
1
G
Lch
JK601
HF(6 )
LF(8 )
Rch
JK602
HF(6 )
LF(8 )
A
B
C
R65
110
C62
70.
1C
629
0.1
C63
50.
047
R64910
L605
R64
210
C62
00.
1C
630
0.1
R64010
L602
C63
70.
047
C63
60.
047
R65
210
C62
60.
1C
628
0.1
R65010
L606
C63
20.
047
SPEAKERS
GNDGNDC OUTC OUTGNDGNDGNDGNDSUR L OUTSUR L OUTSUR R OUTSUR R OUT
ECOSH SYNCSA SYNCD.GNDBU5VRS13V+BNC
W722A
W721A
21
3456789
10
21
34
EFHD
C
GFED
S1S2S3S4AC1CTAC2S7FL2FL1
S1S2S3S4
MAIN CIRCUITB
C
A
D
B
T701CN701
CN702
CN703
CN704
CN705
CN706
CN707
CN708
CN709
CN710
R7931
CN601
C65
210
00P
C64
410
00P
C64
310
00P
C65
10.
047
C64
60.
047
C64
50.
047
R ch
L ch
AC IN
JK701L701F1 T2AT702
Z701
C79
110
00P
3 1
24RL702
R79
447
K
Q7912SD2144STARELAY DRIVE
D74
5M
A40
51M
TA
C7530.01
C75
516
V10
00
Q7262SC3940AQSTAREGULATOR D746
RL1N4003N02
D74
7M
A40
68LT
AC
758
0.01
C75
910
V47
C75
40.
01
D50
0M
A16
5TA
W2/W3
W1
CN602
FP791K5G502AA0002
JK603
CENTER(8 )
SURROUND(8 )R64
610
C62
40.
1C
634
0.1
R64410
L604
R64
510
C62
50.
1C
633
0.1
R64310
L603
D AC IN CIRCUIT
21
3456789
101112
21
345678
R7771K
R77418
D711RL1N4003N02
R77318
R712 2.2K
A
B
C
A
C
B
R7953.9K
D74
3R
L1N
4003
N02
D74
1R
L1N
4003
N02
D74
2R
L1N
4003
N02
D74
4R
L1N
4003
N02
R77
12.
2KD
740
MA
165T
A
POWER TRANSFORMER(B) CIRCUITF
POWER TRANSFORMER(A) CIRCUITE
W722B
W721B10
21
3456789
CN713
CN712
CN711 W1
W3
W2
21
34
R77
222
K
A
B
C
D
FP792K5G502AA0002
SPEAKERS
GNDGND
C OUTC OUT
GNDGNDGNDGND
SUR L INSUR L INSUR R INSUR R IN
ECOSH SYNCSA SYNC
D.GNDBU5V
RS13V+B
NC
S1S2S3S4
AC1CT
AC2S7
FL2FL1
S1S2S3S4
R7982.2
For [EB] area.
For [EG] area.
230-240V 50Hz [EB]230V 50Hz [EG]
: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE
0.7V0V
6V
10.7V6V
6.7V
AC22.6V
AC22.6V
AC11.7V
AC11.7V
AC4.7VAC
29.2V
AC9.4V
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
SA-DV280(EB,EG) TUNER UNIT CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-5
C
B
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
FM
IFIN
AM
MIX
OU
T
RE
G
AM
IFIN
GN
D
SD ST
FM
DE
T
Vcc
ST
RQ
FM
/AM
MO
NO
AM
OS
CO
UT
AM
OS
C
AF
C
AM
RF
IN
AG
C
AM
OU
T
DE
TO
UT
PIL
OT
IN
MP
XIN
PIL
OT
OU
T
Rch
OU
T
Lch
OU
T
B AD F C E
470
2.7K1
68
0.1
1000
P
470
0.01
5~
150
A B
122
100
0.01
8
1 1K
100K
4700
P
B
A
4700
P
100K
1K1
0.01
8
1000
P~
0.01
150P
68
K0.
1
1022
K4.
7
4.7
47K
1000
P
3.3
A
D
B
C
10K
0.0
1
330
1000P
LA1833MNFM/AM IF AMP,DET/AM OSC,MIX/FM MPX
A
B
B
A
D
A
2SC2712SWITCHING
3.3K
2SC2413FM IF AMP
2SC2413FM IF AMP
330
11 13 245678910
1K~
10K
470
4.7K
~22
K
0.02
2
0.1
DTA114POWER SUPPLY(FM:ON)
1K~
10K
100P
~10
00P
0.01
~0.
068
10K
~10
0K
1K~
10K
270
~68
0
270K ~ 680K10P ~39P
270K ~680K
CL
DO DI
Lch
OU
TC
ER
chO
UT
DE
T+
B(2
)S
D+
B(1
)T.
GN
D
To MAIN CIRCUIT(CP101)on SCHEMATIC DIAGRAM-2/19-A
B
1
0.47
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
XIN
CE
DI
CL
DO
B01
B02
B03 B04
I01
IFINI02
AM
IN
FM
INVD
D
PD
AIN
AO
UT
Vss
XO
UT
10K
0.04
7
100K
5~
12P
10
00
P
A
B
C
D
0.58 H
390
220
27K
100P0.01 560
1K
4.7 D
ZS
5.1B10
K
27P
~33
P
27P
7.2MHz
22K
~10
0K100
1000
P
1000P
10K
1K3.3K
10K
1K 1K 1K 470
A B C D
22
5.6K
0.01
A
B
C
D
E
F
LC72131MPLL FREQUENCYSYNTHESIZER
AM ANTEXT
LOOP
FM ANT(75 )
100
0.01
100
2SC2413BUFFER AMP
2SK360FM OSC
2SK360RF AMP
22P 15P
22P
0.02
2
2.7K
47P
33K
100K
2P
8P
10K
10K
33K
33K
100K
0.02
2
100
27P
2P
4P
10K
220
0.02
2
0.02
2 150
5P
18P
27P
2SC2059FM MIXER
0.47 H
0.47
H
10P
~33
P
330P ~580P
1P~
5P
680
~2.
2K
0 ~ 220
1H
820K
~2.
2M
0.02
2
680
1000
P
330
1P~
5P
6P~
10P
6 ~ 220
5P
5P~
12P
0~
5P
100K
Z101 TUNER UNIT(RAN0005EM-2) :POSITIVE VOLTAGE LINE:FM SIGNAL LINE:FM OSC SIGNAL LINE
:AM SIGNAL LINE:AM OSC SIGNAL LINE
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
SA-DV280(EB,EG) OPERATION CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-1
S90
4(
PLA
Y/
RE
C)
FL901 (A2BB00000084)
1754632
T
S
S90
8( I
NP
UT
SE
LEC
TO
R)
S90
7( S
ET
)
S90
6( T
UN
ING
MO
DE
)
S90
5( F
MA
UT
O/M
ON
O)
JK903PHONES3.5mm STEREO
R99
715
0
R996150
D97
3M
A40
30M
TAC
921
1000
P
C92
235
V33
C92
025
V22
R92
210
KR
921
10K
R94
42.
2K
R9124.7K
R9113.3K
R9102.2K
R9091.8K
R9161.5K
R9151.2K
R9141K
R913820
R9073.3K
R9062.2K
R9051.8K
R9041.5K
R9031.2K
R9021K
R901820
FL DISPLAY
1 6 8 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 53 542 5 7 9
W905
S90
1(
/)
C92
825
V22
NOTE:The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"indicates the schematic diagram serial number located on the left corner in the schematic diagram.A OPERATION CIRCUIT
C91
925
V22
C92
725
V22
C39
60.
047
C92
30.
1
C39
50.
047
D974MA165TA
C90
747
0P
C92
40.
1
C90
40.
01
R9241K
C90
847
0P
R9251K
S91
4( P
S)
S91
5( P
TY
)
S91
0(T
UN
ING
,)
S91
1( T
UN
ING
,)
S91
2(T
UN
ER
/BA
ND
)
S91
3(D
IGIT
AL
S.W
OO
FE
R)
(RDS DISP MODE)
A B C D
E
F G H I J K L M N O P Q R S T U
X
W
V
ABCDEFGHIJKLMNOPQRSTUVWXYZ
S90
2( C
LOC
K/T
IME
R)
S90
3(-
DE
MO
)
IC901C2BBFD000317SYSTEM CONTROL/FL DRIVE
CBA
Q901UN4212TARESET
R93
610
0
R91915K
R99147K
R91
810
KR
928
47K
L902
1H
D9011SS291TA
L901
10H
R95
133
0K
R95210M
ABCDEFGH
IJKLMNOPQRST
UV
WXYZ
R99
310
0K
D93
1M
A16
5TA
D93
3M
A16
5TA
R99
010
0K
C91
66.
3V10
0
D95
1LN
J301
MP
UJA
D(D
IGIT
AL
S.W
OO
FE
R)
R99
522
0
D95
4S
ELS
5923
C(
PLA
Y/
RE
C)
R98
61.
5K
D30
6S
ELS
5223
C(
)R
939
1.5K
C90
510
00P
C90
16.
3V10
0
R93
510
0R
934
100
R98
81K
R93
710
KR
987
1K
R9262.2K
C91
20.
1
R954100K
C92
610
00P
R96
01.
5KR
958
1K
R99
910
0K
R95
947
R96
92.
7K
D9021SS291TA
C90
30.
01
C90
210
V10
00
X902(32.7kHz)
C91
118
P
C91
020
P
X901(6MHz)
1
3
2
D90
51S
S29
1TA
EF IKL M NO Q
R9401K
R929 1KR930 1KR932 1KR931 1K
R97
610
0K
R9561K
R9571K
C91
50.
01C
925
1000
PR953 100
AB
CD
G
H
J
C91
450
V2.
2D
904
MA
165T
A
ABC
DE
A B C D E F G H I J K L M N O P Q R S T U V W X
1
11
21
2
12
22
3
13
23
4
14
24
5
15
25
6
16
26
7
17
27
8
18
28
9
19
29
10
20
30
3132333435363738394041424344454647484950
515253545556575859606162636465666768697071727374757677787980
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
-VPP13P14P15P16P17P18P19P20P21P22P23P24P25P26P27P28P29P30P31P32VDD4P33P34P35P36P37P38REGIN0REGIN1
8GREMOCONRDS DATA
RDS CLKHP SW
MIC DETVR JOGAVR JOGBNC(GND)SH REQ
KEY KARAOKEKEY TU
VDD1XC OUT
XC INVss
X OUTX IN
RESETAC IN
SEL/ TUNERSEL TUNER
ST/ AV.6CHLC72 CK
LC72 DI/ STLC72 CELC72 DO
CHECK
STA
ND
-BY
TIM
ER
S.W
.LE
DLO
UN
GE
CH
OR
US
MU
TE
NC
PO
WE
RV
ss2
VD
D2
MU
TE
2N
CM
UT
E3
SH
CS
SH
DO
SH
DI
SH
CK
ED
ET
CR
TIM
ER
SD
VD
D3
P12
P11
P10 P9
P8
P7
P6
P5
P4
P3
P2
P1
1G 2G 3G 4G 5G 6G 7G
R99
410
0K
U
R94
94.
7KR
950
100
:AUDIO SIGNAL LINE: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE
5.1V
5.1V
2V/2ms.DIV.
5V
0V
5V
0VT 10ms.
2V/2ms.DIV.0V
5V
-30.1V
-30.1V-29.3V-29.3V-29.3V-26.3V-20.5V-29.3V-29.3V-29.3V-23.5V-20.5V-23.4V-23.4V-23.7V-20.7V-29.6V-29.6V-29.6V-23.7V-26.6V-26.5V
5.1V-29.5V-29.5V-26.5V-17.2V-5.3V
-10.3V0.4V
0V
-23.
4V-2
0.5V
-26.
3V-2
6.3V
5.1V
-23.
4V-2
0.5V
-26.
2V-2
9.2V
-26.
2V-2
6.2V
-26.
1V-2
6.3V
-23.
5V-2
3.5V
-25.
6V-2
7.5V
-27.
5V-2
5.5V
-23.
5V
-25.6V5.1V2.6V2.6V0.6V5.1V0V0V
1.4V5.1V5.1V5.1V2.3V2.3V
2.7V1.6V5V2.2V0V
5.1V5.1V4.6V0V0V2.5V
0V
5V
0V
5.1V
3.3V
1.9V
1.9V
1.4V0V
5.1V
5.1V
4.8V0V0V0V0V0V0V
FM / AM
-30V
4V
T 5.5ms.
0V
0V4V
T 5.5ms.-30V
FM / AM
3.3VP-P
F=6MHz
FM / AM
4.2VP-P
F=6MHz
FM / AM
5.2VP-P
F=32.7kHz
FM / AM
5.2VP-P
F=32.7kHz
FM / AM
2VP-P
F=32.7kHz
FM / AM
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
SA-DV280(EB,EG) OPERATION CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-1
S90
4(
PLA
Y/
RE
C)
FL901 (A2BB00000084)
1754632
T
S
S90
8( I
NP
UT
SE
LEC
TO
R)
S90
7( S
ET
)
S90
6( T
UN
ING
MO
DE
)
S90
5( F
MA
UT
O/M
ON
O)
JK903PHONES3.5mm STEREO
R99
715
0
R996150
D97
3M
A40
30M
TAC
921
1000
P
C92
235
V33
C92
025
V22
R92
210
KR
921
10K
R94
42.
2K
R9124.7K
R9113.3K
R9102.2K
R9091.8K
R9161.5K
R9151.2K
R9141K
R913820
R9073.3K
R9062.2K
R9051.8K
R9041.5K
R9031.2K
R9021K
R901820
FL DISPLAY
1 6 8 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 53 542 5 7 9
W905
S90
1(
/)
C92
825
V22
NOTE:The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"indicates the schematic diagram serial number located on the left corner in the schematic diagram.A OPERATION CIRCUIT
C91
925
V22
C92
725
V22
C39
60.
047
C92
30.
1
C39
50.
047
D974MA165TA
C90
747
0P
C92
40.
1
C90
40.
01
R9241K
C90
847
0P
R9251K
S91
4( P
S)
S91
5( P
TY
)
S91
0(T
UN
ING
,)
S91
1( T
UN
ING
,)
S91
2(T
UN
ER
/BA
ND
)
S91
3(D
IGIT
AL
S.W
OO
FE
R)
(RDS DISP MODE)
A B C D
E
F G H I J K L M N O P Q R S T U
X
W
V
ABCDEFGHIJKLMNOPQRSTUVWXYZ
S90
2( C
LOC
K/T
IME
R)
S90
3(-
DE
MO
)
IC901C2BBFD000317SYSTEM CONTROL/FL DRIVE
CBA
Q901UN4212TARESET
R93
610
0
R91915K
R99147K
R91
810
KR
928
47K
L902
1H
D9011SS291TA
L901
10H
R95
133
0KR95210M
ABCDEFGH
IJKLMNOPQRST
UV
WXYZ
R99
310
0K
D93
1M
A16
5TA
D93
3M
A16
5TA
R99
010
0K
C91
66.
3V10
0
D95
1LN
J301
MP
UJA
D(D
IGIT
AL
S.W
OO
FE
R)
R99
522
0
D95
4S
ELS
5923
C(
PLA
Y/
RE
C)
R98
61.
5K
D30
6S
ELS
5223
C(
)R
939
1.5K
C90
510
00P
C90
16.
3V10
0
R93
510
0R
934
100
R98
81K
R93
710
KR
987
1K
R9262.2K
C91
20.
1
R954100K
C92
610
00P
R96
01.
5KR
958
1K
R99
910
0K
R95
947
R96
92.
7K
D9021SS291TA
C90
30.
01
C90
210
V10
00
X902(32.7kHz)
C91
118
P
C91
020
P
X901(6MHz)
1
3
2
D90
51S
S29
1TA
EF IKL M NO Q
R9401K
R929 1KR930 1KR932 1KR931 1K
R97
610
0K
R9561K
R9571K
C91
50.
01C
925
1000
PR953 100
AB
CD
G
H
J
C91
450
V2.
2D
904
MA
165T
A
ABC
DE
A B C D E F G H I J K L M N O P Q R S T U V W X
1
11
21
2
12
22
3
13
23
4
14
24
5
15
25
6
16
26
7
17
27
8
18
28
9
19
29
10
20
30
3132333435363738394041424344454647484950
515253545556575859606162636465666768697071727374757677787980
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
-VPP13P14P15P16P17P18P19P20P21P22P23P24P25P26P27P28P29P30P31P32VDD4P33P34P35P36P37P38REGIN0REGIN1
8GREMOCONRDS DATA
RDS CLKHP SW
MIC DETVR JOGAVR JOGBNC(GND)SH REQ
KEY KARAOKEKEY TU
VDD1XC OUT
XC INVss
X OUTX IN
RESETAC IN
SEL/ TUNERSEL TUNER
ST/ AV.6CHLC72 CK
LC72 DI/ STLC72 CELC72 DO
CHECK
STA
ND
-BY
TIM
ER
S.W
.LE
DLO
UN
GE
CH
OR
US
MU
TE
NC
PO
WE
RV
ss2
VD
D2
MU
TE
2N
CM
UT
E3
SH
CS
SH
DO
SH
DI
SH
CK
ED
ET
CR
TIM
ER
SD
VD
D3
P12
P11
P10 P9
P8
P7
P6
P5
P4
P3
P2
P1
1G 2G 3G 4G 5G 6G 7G
R99
410
0K
U
R94
94.
7KR
950
100
:AUDIO SIGNAL LINE: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE
5.1V
5.1V
2V/2ms.DIV.
5V
0V
5V
0VT 10ms.
2V/2ms.DIV.0V
5V
-30.1V
-30.1V-29.3V-29.3V-29.3V-26.3V-20.5V-29.3V-29.3V-29.3V-23.5V-20.5V-23.4V-23.4V-23.7V-20.7V-29.6V-29.6V-29.6V-23.7V-26.6V-26.5V
5.1V-29.5V-29.5V-26.5V-17.2V-5.3V
-10.3V0.4V
0V
-23.
4V-2
0.5V
-26.
3V-2
6.3V
5.1V
-23.
4V-2
0.5V
-26.
2V-2
9.2V
-26.
2V-2
6.2V
-26.
1V-2
6.3V
-23.
5V-2
3.5V
-25.
6V-2
7.5V
-27.
5V-2
5.5V
-23.
5V
-25.6V5.1V2.6V2.6V0.6V5.1V0V0V
1.4V5.1V5.1V5.1V2.3V2.3V
2.7V1.6V5V2.2V0V
5.1V5.1V4.6V0V0V2.5V
0V
5V
0V
5.1V
3.3V
1.9V
1.9V
1.4V0V
5.1V
5.1V
4.8V0V0V0V0V0V0V
FM / AM
-30V
4V
T 5.5ms.
0V
0V4V
T 5.5ms.-30V
FM / AM
3.3VP-P
F=6MHz
FM / AM
4.2VP-P
F=6MHz
FM / AM
5.2VP-P
F=32.7kHz
FM / AM
5.2VP-P
F=32.7kHz
FM / AM
2VP-P
F=32.7kHz
FM / AM
13 14 15 16 17 18 19 20 21 22 23 24
SA-DV280(EB,EG) OPERATION, MAIN CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-2
W901B
W902B
IC151C1BB00000527RDS SIGNALDEMODULATOR
1 2 3
X151
R1581K
R15
410
0K
R15
310
0K
123456789
101112131415
B ACOM
123456789
101112131415
Q902UN411FTAMUTING CONT.
A B C
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16VREF
HPX IN
VDDA
VssA
FL OUT
C IN
TEST
X OUT
IDR
RDCL
RDDA
RST
MODE
VDDB
VssB
X IN
R96
222
K
VR901EVQVBXFK124B
(VOLUME)
R94
510
0
R96
122
KR
943
100
C91
70.
01
C15
510
00P
C15
310
00P
C16
010
00P
C15
96.
3V47
R15
21KR15
11K
C15
456
0PC
158
6.3V
47
C15116V10
D907MA165TA
M
BC
R9461K
C90
910
00P
C91
86.
3V10
0
D E A
R9411K
L153
1H
R15
512
0D
151
MA
4051
MTA
L151100 H
L152
100
H
C15
647
P
C15
747
P
ABCDEFGHI
JKL
NO
Q
S
T
A OPERATION CIRCUIT
R94
22.
2K
R9741K
C93
116
V10
R9653.9K
R9663.9K
D96
1M
A40
75M
TAR
975
22K
D906MA165TA
U
N
1
2
3
Z901B3RAD0000028(REMOTE SENSOR)
R15
71K
C152330P
W902A
W901A
CP101
C
F
G
B
AED
DETRch IN
CELch IN
DIDOCL
+B(2)SD
+B(1)T.GND
Q7072SB1417PQTAREGULATOR
Q7232SC3940AQSTAREGULATOR
R7634.7K
R230 1K
R229 1K
D72
1M
A43
00M
TAR
708
4.7K
C70
70.
047
C70
635
V10
C73
750
V10
0
ToSOUNDPROCESSOR(SH-DV280)
To TUNER UINTon SCHEMATICDIAGRAM-5/11,12-A
C73
50.
047
BA
R56
32.
7K
R56
42.
7K
C66016V10
C65916V10
R61
54.
7K
R61
44.
7K
R6313.9K
R6323.9K
C2020.1
R20
310
0K
R20
410
0K
C20
10.
1
C60216V10
C70
80.
047
R211270
D20
1M
A40
56M
TA
R6871.5K
R6881.5K
Q605,6062SD2144STAMUTING Q605
Q606
R68
31K
R61
74.
7K
21
3456789
1011
CBAX0X1VDD
GVssINHZ0Z1Y1 Y0
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
IC201BU4053BCFE2SIGNAL SELECTOR
C65516V10
C65616V10
R60
64.
7K
R60
54.
7K
2
15
3456789
1011121314
1
2
15
3456789
1011121314
1
20
21
3456789
10111213141516171819
K
LM
I
J
EF
CDEFG
EFG
ABCD
AB
G
H
C60
116
V10
R5982.2K
R5972.2K
R20
510
0K
HG
R20
210
0K
B
C
D
E
F
C50
90.
01C
510
0.01
R6931K
R6921K
C66
416
V10
C72
516
V47
A
C
R69
647
K
Q609,6102SD2144STAMUTING
Q609
Q610
Q612UN411FTAMUTING CONT.
B
CR69422K
R51147
R50947
R512 47 R510 47
W501
D719RL1N4003N02
D720RL1N4003N02
D717RL1N4003N02
D718RL1N4003N02
H
D
C
R695470
D61
1M
A40
51M
TA
C74
016
V10
C73
30.
047
D73
7M
A40
82LT
A
R764330
MAIN CIRCUITB
C7311000P
C74
10.
1
TUNER Lch/CTUNER Rch
A.GNDLch INRch IN
+B(10V)SUR LSUR R
S.WMIC
-B(-10V)V.GNDD.GND
CS/ REQCLK
DATACT GND
SH FL1SH FL2
SYNC
R6033.3K
A
B
B
R68
41K
A
C71
525
V68
00
C71
410
00P
D705RL1N4003N02
A
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
-30.
1V
5.1V
:AUDIO SIGNAL LINE
6V
7.6V
3.3V
0V
3.3V
2.6V
2.6V
0V
5.1V
2.5V2.7V
2.5V
2.5V
5.1V
2.5V
2.5V
14.7V
10.4V
-37.3V-30.1V
-30.7V
14.7V7.2V
7.8V
-10V
-10V
0V
0V
-10.2V
5.1V
4.9V0V
-10V
0V0.7V
5.7V 0V 0V 0V 0V 0V
6V
7.2V
7.6V-10.4V
0V 0V -10.4V
: FM SIGNAL LINE: AM SIGNAL LINE
13 14 15 16 17 18 19 20 21 22 23 24
SA-DV280(EB,EG) OPERATION, MAIN CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-2
W901B
W902B
IC151C1BB00000527RDS SIGNALDEMODULATOR
1 2 3
X151
R1581K
R15
410
0K
R15
310
0K
123456789
101112131415
B ACOM
123456789
101112131415
Q902UN411FTAMUTING CONT.
A B C
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16VREF
HPX IN
VDDA
VssA
FL OUT
C IN
TEST
X OUT
IDR
RDCL
RDDA
RST
MODE
VDDB
VssB
X IN
R96
222
K
VR901EVQVBXFK124B
(VOLUME)
R94
510
0
R96
122
KR
943
100
C91
70.
01
C15
510
00P
C15
310
00P
C16
010
00P
C15
96.
3V47
R15
21KR15
11K
C15
456
0PC
158
6.3V
47
C15116V10
D907MA165TA
M
BC
R9461K
C90
910
00P
C91
86.
3V10
0
D E A
R9411K
L153
1H
R15
512
0D
151
MA
4051
MTA
L151100 H
L152
100
H
C15
647
P
C15
747
P
ABCDEFGHI
JKL
NO
Q
S
T
A OPERATION CIRCUIT
R94
22.
2K
R9741K
C93
116
V10
R9653.9K
R9663.9K
D96
1M
A40
75M
TAR
975
22K
D906MA165TA
U
N
1
2
3
Z901B3RAD0000028(REMOTE SENSOR)
R15
71K
C152330P
W902A
W901A
CP101
C
F
G
B
AED
DETRch IN
CELch IN
DIDOCL
+B(2)SD
+B(1)T.GND
Q7072SB1417PQTAREGULATOR
Q7232SC3940AQSTAREGULATOR
R7634.7K
R230 1K
R229 1K
D72
1M
A43
00M
TAR
708
4.7K
C70
70.
047
C70
635
V10
C73
750
V10
0
ToSOUNDPROCESSOR(SH-DV280)
To TUNER UINTon SCHEMATICDIAGRAM-5/11,12-A
C73
50.
047
BA
R56
32.
7K
R56
42.
7K
C66016V10
C65916V10
R61
54.
7K
R61
44.
7K
R6313.9K
R6323.9K
C2020.1
R20
310
0K
R20
410
0K
C20
10.
1
C60216V10
C70
80.
047
R211270
D20
1M
A40
56M
TA
R6871.5K
R6881.5K
Q605,6062SD2144STAMUTING Q605
Q606
R68
31K
R61
74.
7K
21
3456789
1011
CBAX0X1VDD
GVssINHZ0Z1Y1 Y0
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
IC201BU4053BCFE2SIGNAL SELECTOR
C65516V10
C65616V10
R60
64.
7K
R60
54.
7K
2
15
3456789
1011121314
1
2
15
3456789
1011121314
1
20
21
3456789
10111213141516171819
K
LM
I
J
EF
CDEFG
EFG
ABCD
AB
G
H
C60
116
V10
R5982.2K
R5972.2K
R20
510
0K
HG
R20
210
0K
B
C
D
E
F
C50
90.
01C
510
0.01
R6931K
R6921K
C66
416
V10
C72
516
V47
A
C
R69
647
K
Q609,6102SD2144STAMUTING
Q609
Q610
Q612UN411FTAMUTING CONT.
B
CR69422K
R51147
R50947
R512 47 R510 47
W501
D719RL1N4003N02
D720RL1N4003N02
D717RL1N4003N02
D718RL1N4003N02
H
D
C
R695470
D61
1M
A40
51M
TA
C74
016
V10
C73
30.
047
D73
7M
A40
82LT
A
R764330
MAIN CIRCUITB
C7311000P
C74
10.
1
TUNER Lch/CTUNER Rch
A.GNDLch INRch IN
+B(10V)SUR LSUR R
S.WMIC
-B(-10V)V.GNDD.GND
CS/ REQCLK
DATACT GND
SH FL1SH FL2
SYNC
R6033.3K
A
B
B
R68
41K
A
C71
525
V68
00
C71
410
00P
D705RL1N4003N02
A
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
-30.
1V
5.1V
:AUDIO SIGNAL LINE
6V
7.6V
3.3V
0V
3.3V
2.6V
2.6V
0V
5.1V
2.5V2.7V
2.5V
2.5V
5.1V
2.5V
2.5V
14.7V
10.4V
-37.3V-30.1V
-30.7V
14.7V7.2V
7.8V
-10V
-10V
0V
0V
-10.2V
5.1V
4.9V0V
-10V
0V0.7V
5.7V 0V 0V 0V 0V 0V
6V
7.2V
7.6V-10.4V
0V 0V -10.4V
: FM SIGNAL LINE: AM SIGNAL LINE
25 26 27 28 29 30 31 32 33 34 35 36
SA-DV280(EB,EG) MAIN,POWER SUPPLY CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-3
M
Q708UN4211TASWITCHING(POWER)
Q601 Q602
D75
6M
A70
0ATA
C60
347
0P
C60
447
0P
C60
747
0P
C60
847
0P
C64
910
00P
C65
010
00P
C60
510
00P
C60
610
00P
C6481000P
C61
70.
01
R63
715
K
R63
868
K
R619 120K
R622 120K
R621 150K
R624 150K
R620120K
R612 56K
R611 56K
R610 150K
R609 56K
R608 56K
R607 56K
C610 56P
C609 56P
C612 15P
C611 39P
C614 47P
C613 47P
R62
747
0K
C61
650
V0.
47
N
D60
1S
B36
0L65
08
D60
2S
B36
0L65
08
D75
4R
L1N
4003
N02
C76
10.
1
D70
11N
5402
BM
21C
709
0.1
IC601RSN311W64BPOWER AMPD
757
MA
700A
TA
123456789101112131415181920212223242526 1617
R6043.3K
R6013.3K
R6023.3K
R61
84.
7K
Q601,6022SC5398RSTAPROTECTOR
D6071SS291TA
L
K
D65
8M
A16
5TA
D65
7M
A16
5TA
B
A
R6851K
R6861K
Q607, 6082SD2144STAMUTING
Q607
Q608
C70
50.
01
G
R77
610
K
Q7092SD2144STASWITCHING(POWER)
R7383.9K
R73
947
K
C62
210
V10
0
D65
9M
A16
5TA
D75
11N
5402
BM
21
D7031N5402BM21
D75
3R
L1N
4003
N02
D76
1R
L1N
4003
N02
D75
5R
L1N
4003
N02
D75
21N
5402
BM
21
D70
21N
5402
BM
21
D7041N5402BM21
G
F
E
D
A B C
D558MA165TA
R54410K
R57
215
K
R648120
C61
80.
01
R6352.2K
C61
90.
1
Q5032SC5398RSTASWITCHING
C70
435
V47
00C
702
35V
4700
C70
335
V47
00C
701
35V
4700
R76
122
0
R62
822
K
R69168
R647270
R623120K
CN781
F
C
A
B
D
E
Q5512SA1995RSTASIGNAL LEVEL DET.
Q5552SD2144STASIGNAL LEVEL DET.
Q7022SB1548PQAUREGULATOR
Q7252SC5398RSTASTABILIZER Q705
2SA1995RSTASTABILIZER
Q7012SD2374PQAUREGULATOR
R55
610
0K
R55
710
KC
721
10V
100
D72
5M
A40
82LT
A
R729220C
723
0.04
7
C6391000P
C6401000P
C6411000P
C6421000P
C7320.022
C6471000P
D73
8M
A16
5TA
D73
0M
A40
91H
TA
R768100
R72
43.
9KC
718
25V
100
D72
3M
A41
50H
TA
R72
35.
6K
C71
90.
047
R72510
C72
40.
047
C71
00.
047
R54
618
K
R55
118
K
R55
247
K R55
522
K
C55
00.
01
D552MA165TA
D555MA4100MTA
R54
718
KE602
E601
R74
91K
D73
9M
A16
5TA
POWER SUPPLY CIRCUITC1 1032 4 5 6 7 8 9
W701B
1 1032 4 5 6 7 8 9
R72
03.
9K
C73
450
V3.
3
D75
8M
A16
5TA
C72
225
V10
0 C72
00.
047
C71
716
V33
MAIN CIRCUITB
G
R76
522
0
NR
569
10K D
554
MA
165T
A
C37
16.
3V10
0
Q5562SC5398RSTASWITCHING
R568100
D55
3M
A70
0ATA
C55616V10 C
555
16V
10
Q5572SA1995RSTAMOTOR DRIVE
Q5532SD2144STAMOTOR DRIVE
R5702.2M
R56
010
0K
C5590.01
D58
1R
L1N
4003
N02
R56
722
FAN MOTOR
JK551
R56668K
Q5542SA1995RSTASIGNAL LEVEL DET.
M
R71
93.
3K
Q703,7042SD2137PQTAREGULATOR
R7962.2
Q703
Q704
R76927
R72
73.
9K
C55
416
V22
0
R561100K
C5520.01
R5594.7K
R5914.7K
C55
150
V2.
2
D55
1M
A16
5TA
1 2
D58
3R
L1N
4003
N02
N
R72
14.
7
R7222.2
AB
R75
30.
47
R7540.47
Q711,7122SB1548PQAUREGULATOR
Q711
R7972.2
R76727
R5582.2K
D58
2R
L1N
4003
N02
Q712
: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE
7.6V-10.4V
0V0V59.5V-59.5V0V28.9V-29.3V0V0V0V0V-0.2V29.4V-29.7V0V0V54.1V-51.4V0V0V0V0V
0V
0V5.1V5.1V
0V0V
0.7V0V 0V
2.1V
14.7V
0.7V0V
0.7V0V
29.2V
29.2V14.7V
15.2V
-30.1V
-11V
-10.4V
-11V
-0.6V
14.1V
13.6V
9.6V
10.2V
10.4V
-10.4V
14.7V
7.6V7V
0V
7.6V
0.3V-10.4V
-10.4V
-10.4V
7.6V
7.6V
6.8VFAN ON:1.6V
0V
FAN ON:0V0.5V
FAN ON:0V4.7V
0V
0.5V
8.1V
8.1V
30.1V
30.1V7.6V
7.6V
0V
10.4V
13.6V
10.4V 14.1V
13.6V
25 26 27 28 29 30 31 32 33 34 35 36
SA-DV280(EB,EG) MAIN,POWER SUPPLY CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-3
M
Q708UN4211TASWITCHING(POWER)
Q601 Q602
D75
6M
A70
0ATA
C60
347
0P
C60
447
0P
C60
747
0P
C60
847
0P
C64
910
00P
C65
010
00P
C60
510
00P
C60
610
00P
C6481000P
C61
70.
01
R63
715
K
R63
868
K
R619 120K
R622 120K
R621 150K
R624 150K
R620120K
R612 56K
R611 56K
R610 150K
R609 56K
R608 56K
R607 56K
C610 56P
C609 56P
C612 15P
C611 39P
C614 47P
C613 47P
R62
747
0K
C61
650
V0.
47
N
D60
1S
B36
0L65
08
D60
2S
B36
0L65
08
D75
4R
L1N
4003
N02
C76
10.
1
D70
11N
5402
BM
21C
709
0.1
IC601RSN311W64BPOWER AMPD
757
MA
700A
TA
123456789101112131415181920212223242526 1617
R6043.3K
R6013.3K
R6023.3K
R61
84.
7K
Q601,6022SC5398RSTAPROTECTOR
D6071SS291TA
L
K
D65
8M
A16
5TA
D65
7M
A16
5TA
B
A
R6851K
R6861K
Q607, 6082SD2144STAMUTING
Q607
Q608
C70
50.
01
G
R77
610
K
Q7092SD2144STASWITCHING(POWER)
R7383.9K
R73
947
K
C62
210
V10
0
D65
9M
A16
5TA
D75
11N
5402
BM
21
D7031N5402BM21
D75
3R
L1N
4003
N02
D76
1R
L1N
4003
N02
D75
5R
L1N
4003
N02
D75
21N
5402
BM
21
D70
21N
5402
BM
21
D7041N5402BM21
G
F
E
D
A B C
D558MA165TA
R54410K
R57
215
K
R648120
C61
80.
01
R6352.2K
C61
90.
1
Q5032SC5398RSTASWITCHING
C70
435
V47
00C
702
35V
4700
C70
335
V47
00C
701
35V
4700
R76
122
0
R62
822
K
R69168
R647270
R623120K
CN781
F
C
A
B
D
E
Q5512SA1995RSTASIGNAL LEVEL DET.
Q5552SD2144STASIGNAL LEVEL DET.
Q7022SB1548PQAUREGULATOR
Q7252SC5398RSTASTABILIZER Q705
2SA1995RSTASTABILIZER
Q7012SD2374PQAUREGULATOR
R55
610
0K
R55
710
KC
721
10V
100
D72
5M
A40
82LT
A
R729220C
723
0.04
7
C6391000P
C6401000P
C6411000P
C6421000P
C7320.022
C6471000P
D73
8M
A16
5TA
D73
0M
A40
91H
TA
R768100
R72
43.
9KC
718
25V
100
D72
3M
A41
50H
TA
R72
35.
6K
C71
90.
047
R72510
C72
40.
047
C71
00.
047
R54
618
K
R55
118
K
R55
247
K R55
522
K
C55
00.
01
D552MA165TA
D555MA4100MTA
R54
718
K
E602
E601
R74
91K
D73
9M
A16
5TA
POWER SUPPLY CIRCUITC1 1032 4 5 6 7 8 9
W701B
1 1032 4 5 6 7 8 9
R72
03.
9K
C73
450
V3.
3
D75
8M
A16
5TA
C72
225
V10
0 C72
00.
047
C71
716
V33
MAIN CIRCUITB
G
R76
522
0
N
R56
910
K D55
4M
A16
5TA
C37
16.
3V10
0
Q5562SC5398RSTASWITCHING
R568100
D55
3M
A70
0ATA
C55616V10 C
555
16V
10
Q5572SA1995RSTAMOTOR DRIVE
Q5532SD2144STAMOTOR DRIVE
R5702.2M
R56
010
0K
C5590.01
D58
1R
L1N
4003
N02
R56
722
FAN MOTOR
JK551
R56668K
Q5542SA1995RSTASIGNAL LEVEL DET.
M
R71
93.
3K
Q703,7042SD2137PQTAREGULATOR
R7962.2
Q703
Q704
R76927
R72
73.
9K
C55
416
V22
0
R561100K
C5520.01
R5594.7K
R5914.7K
C55
150
V2.
2
D55
1M
A16
5TA
1 2
D58
3R
L1N
4003
N02
N
R72
14.
7
R7222.2
AB
R75
30.
47
R7540.47
Q711,7122SB1548PQAUREGULATOR
Q711
R7972.2
R76727
R5582.2K
D58
2R
L1N
4003
N02
Q712
: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE
7.6V-10.4V
0V0V59.5V-59.5V0V28.9V-29.3V0V0V0V0V-0.2V29.4V-29.7V0V0V54.1V-51.4V0V0V0V0V
0V
0V5.1V5.1V
0V0V
0.7V0V 0V
2.1V
14.7V
0.7V0V
0.7V0V
29.2V
29.2V14.7V
15.2V
-30.1V
-11V
-10.4V
-11V
-0.6V
14.1V
13.6V
9.6V
10.2V
10.4V
-10.4V
14.7V
7.6V7V
0V
7.6V
0.3V-10.4V
-10.4V
-10.4V
7.6V
7.6V
6.8VFAN ON:1.6V
0V
FAN ON:0V0.5V
FAN ON:0V4.7V
0V
0.5V
8.1V
8.1V
30.1V
30.1V7.6V
7.6V
0V
10.4V
13.6V
10.4V 14.1V
13.6V
A
B
C
D
E
F
G
H
37 38 39 40 41 42 43 44 45 46 47 48
SA-DV280(EB,EG) MAIN, AC IN, POWER TRANSFORMER(A),(B) CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-4
L601
21
3456789
101112
21
345678
R63910
C62
10.
1
EF
D
CP601
CP602
R64
110
AB
IJ
C
C63
10.
1
G
Lch
JK601
HF(6 )
LF(8 )
Rch
JK602
HF(6 )
LF(8 )
A
B
C
R65
110
C62
70.
1C
629
0.1
C63
50.
047
R64910
L605
R64
210
C62
00.
1C
630
0.1
R64010
L602
C63
70.
047
C63
60.
047
R65
210
C62
60.
1C
628
0.1
R65010
L606
C63
20.
047
SPEAKERS
GNDGNDC OUTC OUTGNDGNDGNDGNDSUR L OUTSUR L OUTSUR R OUTSUR R OUT
ECOSH SYNCSA SYNCD.GNDBU5VRS13V+BNC
W722A
W721A
21
3456789
10
21
34
EFHD
C
GFED
S1S2S3S4AC1CTAC2S7FL2FL1
S1S2S3S4
MAIN CIRCUITB
C
A
D
B
T701CN701
CN702
CN703
CN704
CN705
CN706
CN707
CN708
CN709
CN710
R7931
CN601
C65
210
00P
C64
410
00P
C64
310
00P
C65
10.
047
C64
60.
047
C64
50.
047
R ch
L ch
AC IN
JK701L701F1 T2AT702
Z701
C79
110
00P
3 1
24RL702
R79
447
K
Q7912SD2144STARELAY DRIVE
D74
5M
A40
51M
TA
C7530.01
C75
516
V10
00
Q7262SC3940AQSTAREGULATOR D746
RL1N4003N02
D74
7M
A40
68LT
AC
758
0.01
C75
910
V47
C75
40.
01
D50
0M
A16
5TA
W2/W3
W1
CN602
FP791K5G502AA0002
JK603
CENTER(8 )
SURROUND(8 )R64
610
C62
40.
1C
634
0.1
R64410
L604
R64
510
C62
50.
1C
633
0.1
R64310
L603
D AC IN CIRCUIT
21
3456789
101112
21
345678
R7771K
R77418
D711RL1N4003N02
R77318
R712 2.2K
A
B
C
A
C
B
R7953.9K
D74
3R
L1N
4003
N02
D74
1R
L1N
4003
N02
D74
2R
L1N
4003
N02
D74
4R
L1N
4003
N02
R77
12.
2KD
740
MA
165T
A
POWER TRANSFORMER(B) CIRCUITF
POWER TRANSFORMER(A) CIRCUITE
W722B
W721B10
21
3456789
CN713
CN712
CN711 W1
W3
W2
21
34
R77
222
K
A
B
C
D
FP792K5G502AA0002
SPEAKERS
GNDGND
C OUTC OUT
GNDGNDGNDGND
SUR L INSUR L INSUR R INSUR R IN
ECOSH SYNCSA SYNC
D.GNDBU5V
RS13V+B
NC
S1S2S3S4
AC1CT
AC2S7
FL2FL1
S1S2S3S4
R7982.2
For [EB] area.
For [EG] area.
230-240V 50Hz [EB]230V 50Hz [EG]
: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE
0.7V0V
6V
10.7V6V
6.7V
AC22.6V
AC22.6V
AC11.7V
AC11.7V
AC4.7VAC
29.2V
AC9.4V
A
B
C
D
E
F
G
H
37 38 39 40 41 42 43 44 45 46 47 48
SA-DV280(EB,EG) MAIN, AC IN, POWER TRANSFORMER(A),(B) CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-4
L601
21
3456789
101112
21
345678
R63910
C62
10.
1
EF
D
CP601
CP602
R64
110
AB
IJ
C
C63
10.
1
G
Lch
JK601
HF(6 )
LF(8 )
Rch
JK602
HF(6 )
LF(8 )
A
B
C
R65
110
C62
70.
1C
629
0.1
C63
50.
047
R64910
L605
R64
210
C62
00.
1C
630
0.1
R64010
L602
C63
70.
047
C63
60.
047
R65
210
C62
60.
1C
628
0.1
R65010
L606
C63
20.
047
SPEAKERS
GNDGNDC OUTC OUTGNDGNDGNDGNDSUR L OUTSUR L OUTSUR R OUTSUR R OUT
ECOSH SYNCSA SYNCD.GNDBU5VRS13V+BNC
W722A
W721A
21
3456789
10
21
34
EFHD
C
GFED
S1S2S3S4AC1CTAC2S7FL2FL1
S1S2S3S4
MAIN CIRCUITB
C
A
D
B
T701CN701
CN702
CN703
CN704
CN705
CN706
CN707
CN708
CN709
CN710
R7931
CN601
C65
210
00P
C64
410
00P
C64
310
00P
C65
10.
047
C64
60.
047
C64
50.
047
R ch
L ch
AC IN
JK701L701F1 T2AT702
Z701
C79
110
00P
3 1
24RL702
R79
447
K
Q7912SD2144STARELAY DRIVE
D74
5M
A40
51M
TA
C7530.01
C75
516
V10
00
Q7262SC3940AQSTAREGULATOR D746
RL1N4003N02
D74
7M
A40
68LT
AC
758
0.01
C75
910
V47
C75
40.
01
D50
0M
A16
5TA
W2/W3
W1
CN602
FP791K5G502AA0002
JK603
CENTER(8 )
SURROUND(8 )R64
610
C62
40.
1C
634
0.1
R64410
L604
R64
510
C62
50.
1C
633
0.1
R64310
L603
D AC IN CIRCUIT
21
3456789
101112
21
345678
R7771K
R77418
D711RL1N4003N02
R77318
R712 2.2K
A
B
C
A
C
B
R7953.9K
D74
3R
L1N
4003
N02
D74
1R
L1N
4003
N02
D74
2R
L1N
4003
N02
D74
4R
L1N
4003
N02
R77
12.
2KD
740
MA
165T
A
POWER TRANSFORMER(B) CIRCUITF
POWER TRANSFORMER(A) CIRCUITE
W722B
W721B10
21
3456789
CN713
CN712
CN711 W1
W3
W2
21
34
R77
222
K
A
B
C
D
FP792K5G502AA0002
SPEAKERS
GNDGND
C OUTC OUT
GNDGNDGNDGND
SUR L INSUR L INSUR R INSUR R IN
ECOSH SYNCSA SYNC
D.GNDBU5V
RS13V+B
NC
S1S2S3S4
AC1CT
AC2S7
FL2FL1
S1S2S3S4
R7982.2
For [EB] area.
For [EG] area.
230-240V 50Hz [EB]230V 50Hz [EG]
: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE
0.7V0V
6V
10.7V6V
6.7V
AC22.6V
AC22.6V
AC11.7V
AC11.7V
AC4.7VAC
29.2V
AC9.4V
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
SA-DV280(EB,EG) TUNER UNIT CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-5
C
B
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
FM
IFIN
AM
MIX
OU
T
RE
G
AM
IFIN
GN
D
SD ST
FM
DE
T
Vcc
ST
RQ
FM
/AM
MO
NO
AM
OS
CO
UT
AM
OS
C
AF
C
AM
RF
IN
AG
C
AM
OU
T
DE
TO
UT
PIL
OT
IN
MP
XIN
PIL
OT
OU
T
Rch
OU
T
Lch
OU
T
B AD F C E
470
2.7K1
68
0.1
1000
P
470
0.01
5~
150
A B
122
100
0.01
8
1 1K
100K
4700
P
B
A
4700
P
100K
1K1
0.01
8
1000
P~
0.01
150P
68
K0.
1
1022
K4.
7
4.7
47K
1000
P
3.3
A
D
B
C
10K
0.0
1
330
1000P
LA1833MNFM/AM IF AMP,DET/AM OSC,MIX/FM MPX
A
B
B
A
D
A
2SC2712SWITCHING
3.3K
2SC2413FM IF AMP
2SC2413FM IF AMP
330
11 13 245678910
1K~
10K
470
4.7K
~22
K
0.02
2
0.1
DTA114POWER SUPPLY(FM:ON)
1K~
10K
100P
~10
00P
0.01
~0.
068
10K
~10
0K
1K~
10K
270
~68
0
270K ~ 680K10P ~39P
270K ~680K
CL
DO DI
Lch
OU
TC
ER
chO
UT
DE
T+
B(2
)S
D+
B(1
)T.
GN
D
To MAIN CIRCUIT(CP101)on SCHEMATIC DIAGRAM-2/19-A
B
1
0.47
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
XIN
CE
DI
CL
DO
B01
B02
B03 B04
I01
IFINI02
AM
IN
FM
INVD
D
PD
AIN
AO
UT
Vss
XO
UT
10K
0.04
7
100K
5~
12P
10
00
P
A
B
C
D
0.58 H
390
220
27K
100P0.01 560
1K
4.7 D
ZS
5.1B10
K
27P
~33
P
27P
7.2MHz
22K
~10
0K100
1000
P
1000P
10K
1K3.3K
10K
1K 1K 1K 470
A B C D
22
5.6K
0.01
A
B
C
D
E
F
LC72131MPLL FREQUENCYSYNTHESIZER
AM ANTEXT
LOOP
FM ANT(75 )
100
0.01
100
2SC2413BUFFER AMP
2SK360FM OSC
2SK360RF AMP
22P 15P
22P
0.02
2
2.7K
47P
33K
100K
2P
8P
10K
10K
33K
33K
100K
0.02
2
100
27P
2P
4P
10K
220
0.02
2
0.02
2 150
5P
18P
27P
2SC2059FM MIXER
0.47 H
0.47
H
10P
~33
P
330P ~580P
1P~
5P
680
~2.
2K
0 ~ 220
1H
820K
~2.
2M
0.02
2
680
1000
P
330
1P~
5P
6P~
10P
6 ~ 220
5P
5P~
12P
0~
5P
100K
Z101 TUNER UNIT(RAN0005EM-2) :POSITIVE VOLTAGE LINE:FM SIGNAL LINE:FM OSC SIGNAL LINE
:AM SIGNAL LINE:AM OSC SIGNAL LINE
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
SA-DV280(EB,EG) TUNER UNIT CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-5
C
B
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
FM
IFIN
AM
MIX
OU
T
RE
G
AM
IFIN
GN
D
SD ST
FM
DE
T
Vcc
ST
RQ
FM
/AM
MO
NO
AM
OS
CO
UT
AM
OS
C
AF
C
AM
RF
IN
AG
C
AM
OU
T
DE
TO
UT
PIL
OT
IN
MP
XIN
PIL
OT
OU
T
Rch
OU
T
Lch
OU
T
B AD F C E
470
2.7K1
68
0.1
1000
P
470
0.01
5~
150
A B
122
100
0.01
8
1 1K
100K
4700
P
B
A
4700
P
100K
1K1
0.01
8
1000
P~
0.01
150P
68
K0.
1
1022
K4.
7
4.7
47K
1000
P
3.3
A
D
B
C
10K
0.0
1
330
1000P
LA1833MNFM/AM IF AMP,DET/AM OSC,MIX/FM MPX
A
B
B
A
D
A
2SC2712SWITCHING
3.3K
2SC2413FM IF AMP
2SC2413FM IF AMP
330
11 13 245678910
1K~
10K
470
4.7K
~22
K
0.02
2
0.1
DTA114POWER SUPPLY(FM:ON)
1K~
10K
100P
~10
00P
0.01
~0.
068
10K
~10
0K
1K~
10K
270
~68
0
270K ~ 680K10P ~39P
270K ~680K
CL
DO DI
Lch
OU
TC
ER
chO
UT
DE
T+
B(2
)S
D+
B(1
)T.
GN
D
To MAIN CIRCUIT(CP101)on SCHEMATIC DIAGRAM-2/19-A
B
1
0.47
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
XIN
CE
DI
CL
DO
B01
B02
B03 B04
I01
IFINI02
AM
IN
FM
INVD
D
PD
AIN
AO
UT
Vss
XO
UT
10K
0.04
7
100K
5~
12P
10
00
P
A
B
C
D
0.58 H
390
220
27K
100P0.01 560
1K
4.7 D
ZS
5.1B10
K
27P
~33
P
27P
7.2MHz
22K
~10
0K100
1000
P
1000P
10K
1K3.3K
10K
1K 1K 1K 470
A B C D
22
5.6K
0.01
A
B
C
D
E
F
LC72131MPLL FREQUENCYSYNTHESIZER
AM ANTEXT
LOOP
FM ANT(75 )
100
0.01
100
2SC2413BUFFER AMP
2SK360FM OSC
2SK360RF AMP
22P 15P
22P
0.02
2
2.7K
47P
33K
100K
2P
8P
10K
10K
33K
33K
100K
0.02
2
100
27P
2P
4P
10K
220
0.02
2
0.02
2 150
5P
18P
27P
2SC2059FM MIXER
0.47 H
0.47
H
10P
~33
P
330P ~580P
1P~
5P
680
~2.
2K
0 ~ 220
1H
820K
~2.
2M
0.02
2
680
1000
P
330
1P~
5P
6P~
10P
6 ~ 220
5P
5P~
12P
0~
5P
100K
Z101 TUNER UNIT(RAN0005EM-2) :POSITIVE VOLTAGE LINE:FM SIGNAL LINE:FM OSC SIGNAL LINE
:AM SIGNAL LINE:AM OSC SIGNAL LINE
BU4053BCFE2C1BB00000527
C2BBFD000317 RSN311W64B UN411FTAUN4211TAUN4212TA
2SB1417PQTA2SD2137PQTA
2SD2144STA
2SA1995RSTA2SC5398RSTA
2SC3940AQSTA 2SB1548PQAU2SD2374PQAU
1SS291TAMA700ATA
MA4100MTAMA4150HTAMA4300MTA
MA165TA
SB360L6508 1N5402BM21RL1N4003N02
MA4030MTAMA4051MTAMA4056MTAMA4068LTAMA4075MTAMA4082LTAMA4091HTA
LNJ301MPUJAD SELS5223CSELS5923C
1
8
9
16.....
......
5051
1
..........
.. 30
31
100
......
.
......
.
80
811
..........
........
26E C
B
CB
E
ECB
ECBE
CB
CB
E A
Ca
A
Ca
A
Ca
Anode
Cathode
A
Ca
Anode
Cathode
A
Ca
A
Ca
A
Ca
Anode
Cathode
Anode
Cathode
Anode
CathodeA
Ca
Anode
Cathode
Anode
Cathode
B MAIN P.C.B.
A OPERATION P.C.B.
W902B
14.....2
15......1
W901B
14.....2
15......1
W902A 1 . . . . . . 152 . . . . . 14
1. . . . . . . .10
CN781
2 . . . . . 141 . . . . . . 15
W901A
2 . . . . . . . . 201 . . . . . . . . 19W501
To SOUND PROCESSOR
1 . . 4W722A
1. . . . . . . .10W721A
12..........1
CP601
8......1
CP602
SPEAKERS
C POWER SUPPLY P.C.B.
W701B1. . . . . . . .10
T702(Power
transformer)
D AC IN P.C.B.
W1
W2/W3
1......8
CN602
1..........
12
CN601
AC INCENTER/SURROUNDSPEAKERS
EPOWERTRANSFORMER(A) P.C.B.
1 . . 4W722B
1. . . . . . . .10
T701(Power transformer)
W721B
W3W2
W1
For [EG]area.
For [EB]area.F
POWERTRANSFORMER(B) P.C.B.
1.........
11
CP101
Z101TUNERUNIT
BR
OW
N
BLU
E
JK551
21
FAN MOTOR
21