Technics SA-DV250 User manual

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Service Manual
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ORDERNO.AD0103076C2
Stereotuner/amplifier
lSA-DV250
Colour
(S).......................SilverType
Areas
EB.......................Great Britain.
EG.......................Europe.
System:SC-DV250
Becauseofuniqueinterconnecting cables,when a
compact requiresservice,send orbring in theentire
system.
Specification
•AmplifierSection (Lowfrequencyside)
Poweroutput
DIN100Hz, THD 1%,8 bothchannelsdriven:
2x45W
RMS 100Hz,THD 10%,8 bothchannelsdriven:
2x65W
•AmplifierSection (Highfrequencyside)
Poweroutput
DIN1kHz,THD 1%,6 bothchannelsdriven:
2x25W
RMS 1kHz, THD 10%,6 bothchannelsdriven:
2x35W
Poweroutput(prologic mode)
DIN (front: high frequency)1kHz,THD 1%, 6 bothchannelsdriven:
2x25W
(front: lowfrequency) 100Hz,THD 1%,8 bothchannelsdriven:
2x45W
(surround) 1kHz,THD 1%, 8 bothchannelsdriven:
2x30W
(center) 1kHz,THD 1%, 8 :60W
RMS (front: high frequency)1kHz,THD 10%,6 bothchannelsdriven:
2x35W
(front: lowfrequency)100Hz,THD 10%,8 bothchannelsdriven:
2x65W
(surround) 1kHz,THD 10%,8 bothchannelsdriven:
2x40W
(center) 1kHz, THD 10%, 8 :80W
• Totalharmonicdistorition
Ratedpowerat 1kHz/6 :1%
Halfpowerat 1kHz/ 6 :0.1%
• Loadimpedance
Front (high frequency): 6
(lowfrequency): 8
Surround: 8
Center: 8
• FM tunersection
Frequencyrange: 87.50-108.00MHz
(0.05MHzsteps)
Sensitivity(S/N26dB): 1.5μV
S/N: MONO 70dB
(75dB,IHF)
Antennaterminals: 75 (unbalance)
• AMtunersection

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7.1Todisplay themalfunctioncode
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Fig. 7-1
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U70 DVD:
Automaticallydisplayson the
U70 DECK: tuner/amplifierwhenamalfunction occurs.RefertoFig. 7-1.
F61: Automaticallydisplayson thetuner/amplifierwhenamalfunction occurs.RefertoFig.7-1.

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7.2Toreturntothenormal display
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1. ForU70 DVD/U70 DECK
¡Pressananyoperation button on thetuner/amplifier.
¡Tore-display thecode,switchthepoweroff(POWERSTANDBYbutton),and then
switchpowerbackon again.
2. ForF61
¡IfF61 isdisplayed, thepowerwill automaticallybeswitchedoff and thestandby
indicatorwill lightup.
¡F61 will bedisplayed for3 seconds,and thentheclockwillbedisplayed.
¡Tore-display thecode,switchthepoweron.F61 will bere-displayed, and thenafter3
secondstheclockwill bedisplayedand thepowerwill automaticallyswitchoff.
@
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7.3.1U70 DVD,U70 DECK/(displayed
automatically)
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lProblemorcondition
Abus-linecommunicationserrorhasoccurredasaresult oftheflatcablesbeinginserted
incorrectly, thuspreventingthesystemfromoperating.
¡IfU70 isdisplayedon thetuner/amplifier, theCassettedeckorDVD Changercannotbe
operatedby remotecontrol.
lCorrection Procedure
1.Tocheckforcorrectinsertion oftheflatcables.
nInserteachconnectorsuntil you hearaclick.
nInserttheflatcablesatthebackoftheunit intheorderindicated.RefertoFig.8-
2.
Makesurethewhitesideofthecablesison yourrightside.RefertoFig.8-3.
Fig. 7-2.
Fig. 7-3.
2.Breakageoftheflatcables.(Checkand replace.)
3.Iftheproblemisnotcorrectedby items1 and 2above,thisindicatesafaultyIC.
SA-DV250:
IC901 (C2BBFD000317)

http://servis-manual.com/
SL-DV250:
IC401 (M38504E6227F)
RS-DV250:
IC701 (M38503M2406F)
ChecktheseICsand replace.
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7.3.2F61
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lProblemorcondition
Whenthepowerswitchisswitchedon,it automaticallyswitchesback off,makingit
impossibleto switchpoweron.
lCorrection procedure
FaultyTuner/Amplifier(SA-DV250)outputIC(IC601).
(WhenaDCvoltageisappliedtospeakerterminals.)
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S904
(PLAY/ REC)
SCHEMATIC DIAGRAM-1
FL901 (A2BB00000084)
1
7
5
4
6
3
2
T
S
S908
(INPUT SELECTOR)
S907
(SET)
S906
(TUNING MODE)
S905
(FM AUTO/MONO)
JK903
PHONES
3.5mm STEREO
R997
150
R996
150
D973
MA4030MTA
C921
1000P
C922
35V33
C920
25V22
R922
10K
R921
10K
R944
2.2K
R912
4.7K R911 3.3K R910 2.2K R909 1.8K R916 1.5K R915 1.2K R914 1K R913 820
R907
3.3K R906 2.2K R905 1.8K R904 1.5K R903 1.2K R902 1K R901 820
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
S901
(/)
C928
25V22
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.
AOPERATION CIRCUIT
C919
25V22
C927
25V22
C396
0.047
C923
0.1
C395
0.047
D974
MA165TA
C907
470P
C924
0.1
C904
0.01
R924
1K
C908
470P
R925
1K
S914
(PS)
S915
(PTY)
S910
(TUNING, )
S911
(TUNING, )
S912
(TUNER/ BAND)
S913
(DIGITAL
S.WOOFER)
(RDS DISP MODE)
ABCD
E
FGH I JKLMNOPQRSTU
X
W
V
ABCDEFGHIJKLMNOPQRSTUVWXYZ
S902
(CLOCK/ TIMER)
S903
(-DEMO)
:AUDIO SIGNAL LINE

SCHEMATIC DIAGRAM-2
IC901
C2BBFD000317
SYSTEM CONTROL/
FL DRIVE
C
B
A
Q901
UN4212TA
RESET
R936
100
R919
15K
R991
47K
R918 10K R928 47K
L902 1 H
D901
1SS291TA
L901
10 H
R951
330K
R952
10M
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
R993
100K
D931
MA165TA
D933 MA165TA
R990
100K
C916
6.3V100
D951
LNJ301MPUJAD
(DIGITAL S.WOOFER)R995
220
D954
SELS5923C
(PLAY/ REC)R986
1.5K
D306
SELS5223C
( ) R939
1.5K
C905
1000P
C901
6.3V100
R935 100 R934 100
R988 1K
R937 10K
R987 1K
R926
2.2K
C912
0.1
R954
100K
C926
1000P
R960 1.5K
R958 1K
R999
100K
R959 47
R969
2.7K
D902
1SS291TA
C903
0.01
C902
10V1000
X902
(32.7kHz)
C911
18P
C910
20P
X901
(6MHz)
1
3
2
D905 1SS291TA
EFIKLMNO Q
R940
1K
R929 1K
R930 1K
R932 1K
R931 1K
R976
100K
R956
1K R957 1K
C915
0.01 C925
1000P
R953 100
A
B
C
D
G
H
J
C914
50V2.2
D904
MA165TA
A
B
C
D
E
ABCDEFGHI JKLMNOPQRST UVWX
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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
- VP
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
VDD4
P33
P34
P35
P36
P37
P38
REGIN0
REGIN1
8G
REMOCON
RDS DATA
RDS CLK
HP SW
MIC DET
VR JOGA
VR JOGB
NC(GND)
SH REQ
KEY KARAOKE
KEY TU
VDD1
XC OUT
XC IN
Vss
X OUT
XIN
RESET
AC IN
SEL/ TUNER
SEL TUNER
ST/ AV.6CH
LC72 CK
LC72 DI/ ST
LC72 CE
LC72 DO
CHECK
STAND-BY TIMER S.W.LED LOUNGE CHORUS MUTE NC POWER Vss2 VDD2 MUTE2 NC MUTE3 SHCS SHDO SHDI SHCK E DET CR TIMER SD
VDD3
P12
P11
P10
P9
P8 P7 P6 P5 P4 P3 P2
P1
1G 2G 3G 4G 5G 6G 7G
R994 100K
U
R949
4.7K
R950
100
: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE
5.1V
5.1V
2V/2ms.DIV.
5V
0V
5V
0V
T10ms.
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
- 10.3V
0.4V
0V
-
23.4V
-
20.5V
-
26.3V
-
26.3V
5.1V
-
23.4V
-
20.5V
-
26.2V
-
29.2V
-
26.2V
-
26.2V
-
26.1V
-
26.3V
-
23.5V
-
23.5V
-
25.6V
-
27.5V
-
27.5V
-
25.5V
-
23.5V
- 25.6V
5.1V
2.6V
2.6V
0.6V
5.1V
0V
0V
1.4V
5.1V
5.1V
5.1V
2.3V
2.3V
2.7V
1.6V
5V
2.2V
0V
5.1V
5.1V
4.6V
0V
0V
2.5V
0V
5V
0V
5.1V 3.3V 1.9V
1.9V
1.4V
0V
5.1V 5.1V
4.8V
0V 0V 0V 0V 0V 0V
FM / AM
- 30V
4V
T 5.5ms.
0V
0V
4V
T 5.5ms.
- 30V
FM / AM
3.3V
P-P
F=6MHz
FM / AM
4.2V
P-P
F=6MHz
FM / AM
5.2V
P-P
F=32.7kHz
FM / AM
5.2V
P-P
F=32.7kHz
FM / AM
2V
P-P
F=32.7kHz
FM / AM

SCHEMATIC DIAGRAM-3
W901B
W902B
IC151
C1BB00000527
RDS SIGNAL
DEMODULATOR
123
X151
R158
1K
R154
100K
R153
100K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
BA
COM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Q902
UN411FTA
MUTING CONT.
ABC
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
VREF
HPX IN
VDDA
VssA
FL OUT
CIN
TEST
X OUT
IDR
RDCL
RDDA
RST
MODE
VDDB
VssB
XIN
R962
22K
VR901
EVQVBXFK124B
(VOLUME)
R945
100
R961
22K
R943
100
C917
0.01
C155
1000P
C153
1000P
C160
1000P
C159
6.3V47
R152
1K
R151
1K
C154
560P C158
6.3V47
C151
16V10 D907
MA165TA
M
BC
R946
1K
C909
1000P C918
6.3V100
DEA
R941
1K
L153
1H
R155
120
D151
MA4051MTA
L151
100 H
L152
100 H
C156
47P
C157
47P
A
B
C
D
E
F
G
H
I
J
K
L
N
O
Q
S
T
AOPERATION CIRCUIT
R942
2.2K
R974
1K
C931
16V10
R965
3.9K
R966
3.9K
D961
MA4075MTA R975
22K
D906
MA165TA
U
N
1
2
3
Z901
B3RAD0000028
(REMOTE SENSOR)
R157
1K
C152
330P
: 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

SCHEMATIC DIAGRAM-4
W902A
W901A
CP101
C
F
G
B
A
E
D
DET
Rch IN
CE
Lch IN
DI
DO
CL
+B(2)
SD
+B(1)
T.GND
Q707
2SB1417PQTA
REGULATOR
Q723
2SC3940AQSTA
REGULATOR
R763
4.7K
R230 1K
R229 1K
D721
MA4300MTA R708
4.7K
C707
0.047
C706
35V10
C737
100
To
SOUND
PROCESSOR
(SH-DV250)
To TUNER UINT
on SCHEMATIC
DIAGRAM-10
C735
0.047
B
A
R563
2.7K
R564
2.7K
C660
16V10
C659
16V10
R615
4.7K
R614
4.7K
R631
3.9K
R632
3.9K C202
0.1
R203
100K
R204
100K
C201
0.1
C602
16V10
C708
0.047
R211
270
D201
MA4056MTA
R687
1.5K
R688
1.5K
Q605,606
2SD2144STA
MUTING Q605
Q606
R683
1K
R617
4.7K
2
1
3
4
5
6
7
8
9
10
11
C
B
A
X0X1VDD
G
Vss
INHZ0Z1Y1 Y0
16 15 14 13 12 11 10 9
12345678
IC201
BU4053BCFE2
SIGNAL SELECTOR
C655
16V10
C656
16V10
R606
4.7K
R605
4.7K
2
15
3
4
5
6
7
8
9
10
11
12
13
14
1
2
15
3
4
5
6
7
8
9
10
11
12
13
14
1
20
2
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
K
L
M
I
J
E
F
C
D
E
F
G
E
F
G
A
B
C
D
A
B
G
H
C601
16V10
R598
2.2K
R597
2.2K
R205
100K
H
G
R202
100K
B
C
D
E
F
C509
0.01
C510
0.01
R693
1K
R692
1K
C664
16V10
C725
16V47
A
C
R696
47K
Q609,610
2SD2144STA
MUTING
Q609
Q610
Q612
UN411FTA
MUTING CONT.
B
CR694
22K
R511
47 R509 47
R512 47 R510 47
W501
D719
RL1N4003N02
D720
RL1N4003N02
D717
RL1N4003N02
D718
RL1N4003N02
H
D
C
R695
470
D611
MA4051MTA
C740
16V10
C733
0.047
D737
MA4082LTA
R764
330
MAIN CIRCUIT
B
C731
1000P
C741
0.1
TUNER Lch/C
TUNER Rch
A.GND
Lch IN
Rch IN
+B(10V)
SUR L
SUR R
S.W
MIC
- B( - 10V)
V.GND
D.GND
CS/ REQ
CLK
DATA
CT GND
SH FL1
SH FL2
SYNC
R603
3.3K
A
B
B
R684
1K
A
C715
6800
C714
1000P
D705
RL1N4003N02
A
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE : FM SIGNAL LINE
: AM SIGNAL LINE
14.7V
10.4V
- 37.3V - 30.1V
- 30.7V
14.7V7.2V
7.8V
- 10V
- 10V
0V
0V
- 10.2V
5.1V
4.9V
0V
- 10V
0V
0.7V
:AUDIO SIGNAL LINE
5.7V 0V 0V 0V 0V 0V
6V
7.2V
7.6V
- 10.4V
0V 0V - 10.4V
:MIC SIGNAL LINE

SCHEMATIC DIAGRAM-5
MQ708
UN4211TA
SWITCHING
(POWER)
Q601 Q602
D756
MA700ATA
C603 470P C604 470P C607 470P C608 470P C649 1000P C650 1000P C605 1000P C606 1000P
C648
1000P
C617
0.01
R637
15K
R638
68K
R619 120K
R622 120K
R621 150K
R624 150K
R620
120K
R612 56K
R611 56K
R610 150K
R609 56K
R608 56K
R607 56K
C610 56P
C609 56P
C612 15P
C611 39P
C614 47P
C613 47P
R627
470K
C616
50V0.47
N
D601
SB360L6508
D602
SB360L6508
D754
RL1N4003N02
C761
0.1
D701
1N5402BM21 C709
0.1
IC601
RSN311W64B
POWER AMP
D757
MA700ATA
123456789101112131415181920212223242526 1617
R604
3.3K
R601
3.3K
R602
3.3K
R618
4.7K
Q601,602
2SC5398RSTA
PROTECTOR
D607
1SS291TA
L
K
D658
MA165TA
D657
MA165TA
B
A
R685
1K
R686
1K
Q607, 608
2SD2144STA
MUTING
Q607
Q608
C705
0.01
G
R776
10K
Q709
2SD2144STA
SWITCHING
(POWER)
R738
3.9K
R739
47K
C622
10V100
D659
MA165TA
D751
1N5402BM21
D703
1N5402BM21
D753
RL1N4003N02
D761
RL1N4003N02
D755
RL1N4003N02
D752
1N5402BM21
D702
1N5402BM21
D704
1N5402BM21
G
F
E
D
AB C
D558
MA165TA
R544
10K
R572
15K
R648
120
C618
0.01
R635
2.2K
C619
0.1
Q503
2SC5398RSTA
SWITCHING
C704
4700
C702
4700
C703
4700
C701
4700
R761
220
R628
22K
R691
68
R647
270
R623
120K
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE
7.6V
- 10.4V
0V0V59.5V - 59.5V 0V28.9V - 29.3V 0V0V0V0V - 0.2V 29.4V - 29.7V 0V0V54.1V - 51.4V 0V0V0V0V
0V
0V 5.1V5.1V
0V 0V
0.7V
0V 0V
2.1V
14.7V
0.7V
0V
0.7V
0V

SCHEMATIC DIAGRAM-6
CN781
F
C
A
B
D
E
Q551
2SA1995RSTA
SIGNAL LEVEL DET.
Q555
2SD2144STA
SIGNAL LEVEL DET.
Q702
2SB1548PQAU
REGULATOR
Q725
2SC5398RSTA
STABILIZER Q705
2SA1995RSTA
STABILIZER
Q701
2SD2374PQAU
REGULATOR
R556
100K
R557
10K
C721
10V100
D725
MA4082LTA
R729
220
C723
0.047
C639
1000P
C640
1000P
C641
1000P
C642
1000P
C732
0.022
C647
1000P
D738
MA165TA
D730
MA4091HTA
R768
100
R724
3.9K
C718
16V100
D723
MA4150HTA
R723
5.6K
C719
0.047
R725
10
C724
0.047
C710
0.047
R546
18K
R551
18K
R552
47K
R555
22K
C550
0.01
D552
MA165TA D555 MA4100MTA
R547
18K
E602
E601
R749
1K
D739
MA165TA
POWER SUPPLY CIRCUIT
C
11032 4 5 6 7 8 9
W701B
11032 4 5 6 7 8 9
R720
3.9K
C734
50V3.3
D758
MA165TA
C722
16V100
C720
0.047
C717
16V33
MAIN CIRCUIT
B
G
R765
220
N
R569
10K
D554
MA165TA
C371
6.3V100
Q556
2SC5398RSTA
SWITCHING
R568
100
D553
MA700TA
C556
16V10
C555
16V10
Q557
2SA1995RSTA
MOTOR DRIVE
Q553
2SD2144STA
MOTOR DRIVE
R570
2.2M
R560
100K
C559
0.01
D581
RL1N4003N02
R567
22
FAN MOTOR
JK551
R566
68K
Q554
2SA1995RSTA
SIGNAL LEVEL DET.
M
R719
3.3K
Q703,704
2SD2137PQTA
REGULATOR
R796
2.2
Q703
Q704
R769
27
R727
3.9K
C554
10V220
R561
100K
C552
0.01 R559 4.7K
R591
4.7K
C551
50V2.2
D551
MA165TA
12
D583
RL1N4003N02
N
R721
4.7
R722
2.2
AB
R753
0.47
R754
0.47
Q711,712
2SB1548PQAU
REGULATOR
Q711
R797
2.2 R767 27
R558
2.2K
D582
RL1N4003N02
Q712
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
29.2V
:AUDIO SIGNAL LINE
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
7.6V
7V
0V
7.6V
0.3V
- 10.4V
- 10.4V
- 10.4V
7.6V
7.6V
6.8V
FAN ON:1.6V
0V
FAN ON:0V
0.5V
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

SCHEMATIC DIAGRAM-7
L601
2
1
3
4
5
6
7
8
9
10
11
12
2
1
3
4
5
6
7
8
R639
10
C621
0.1
E
F
D
CP601
CP602
R641
10
A
B
IJ
C
C631
0.1
G
To AC IN CIRCUIT(CN601)
on SCHEMATIC DIAGRAM - 8
D
To AC IN CIRCUIT(CN602)
on SCHEMATIC DIAGRAM - 8
D
Lch
JK601
HF(6 )
LF(8 )
Rch
JK602
HF(6 )
LF(8 )
A
B
C
R651
10
C627
0.1
C629
0.1
C635
0.047
R649
10
L605
R642
10
C620
0.1
C630
0.1
R640
10
L602
C637
0.047
C636
0.047
R652
10
C626
0.1
C628
0.1
R650
10
L606
C632
0.047
SPEAKERS
GND
GND
C OUT
C OUT
GND
GND
GND
GND
SUR L OUT
SUR L OUT
SUR R OUT
SUR R OUT
ECO
SH SYNC
SA SYNC
D.GND
BU5V
RS13V
+B
NC
To POWER
TRANSFORMER(A)
CIRCUIT(W722B)
on SCHEMATIC
DIAGRAM - 8
W722A
W721A
2
1
3
4
5
6
7
8
9
10
2
1
3
4
E
F
H
D
C
G
F
E
DE
To POWER
TRANSFORMER(A)
CIRCUIT(W721B)
on SCHEMATIC
DIAGRAM - 8
E
S1
S2
S3
S4
AC1
CT
AC2
S7
FL2
FL1
S1
S2
S3
S4
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE

To MAIN
CIRCUIT
(W721A) on
SCHEMATIC
DIAGRAM - 7
To MAIN
CIRCUIT
(W722A) on
SCHEMATIC
DIAGRAM - 7
SCHEMATIC DIAGRAM-8
C
A
D
B
T701
CN701
CN702
CN703
CN704
CN705
CN706
CN707
CN708
CN709
CN710
R793
1
CN601
C652
1000P
C644
1000P
C643
1000P
C651
0.047
C646
0.047
C645
0.047
Rch
Lch
AC IN
JK701
L701
F1 T2A
T702
Z701
C791
1000P
3 1
24 RL702
R794
47K
Q791
2SD2144STA
RELAY DRIVE
D745
MA4051MTA
C753
0.01
C755
1000
Q726
2SC3940AQSTA
REGULATOR D746
RL1N4003N02
D747
MA4068LTA C758
0.01
C759
10V47
C754
0.01
D500
MA165TA
W2/W3
W1
CN602
R791
RSFMB50KT-L
JK603
CENTER(8 )
SURROUND(8 )
R646
10
C624
0.1
C634
0.1
R644
10
L604
R645
10
C625
0.1 C633
0.1
R643
10
L603
DAC IN CIRCUIT
2
1
3
4
5
6
7
8
9
10
11
12
2
1
3
4
5
6
7
8
R777
1K
R774
18
D711
RL1N4003N02 R773
18
R712 2.2K
A
B
C
A
C
B
R795
3.9K
D743
RL1N4003N02
D741
RL1N4003N02
D742
RL1N4003N02
D744
RL1N4003N02
R771
2.2K D740
MA165TA
POWER TRANSFORMER
(B) CIRCUIT
F
POWER TRANSFORMER
(A) CIRCUIT
E
W722B
W721B
10
2
1
3
4
5
6
7
8
9
CN713
CN712
CN711 W1
W3
W2
2
1
3
4
R772
22K
A
B
C
D
R792
RSFMB50KT-L
SPEAKERS
To MAIN CIRCUIT(CP602)
on SCHEMATIC DIAGRAM
- 7
B
To MAIN CIRCUIT(CP601)
on SCHEMATIC DIAGRAM - 7
B
B
B
GND
GND
C OUT
C OUT
GND
GND
GND
GND
SUR L IN
SUR L IN
SUR R IN
SUR R IN
ECO
SH SYNC
SA SYNC
D.GND
BU5V
RS13V
+B
NC
S1
S2
S3
S4
AC1
CT
AC2
S7
FL2
FL1
S1
S2
S3
S4
R798
2.2
For [EB] area.
For [EG] area.
230-240V 50Hz [EB]
230V 50Hz [EG]
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
0.7V
0V
6V
10.7V6V
6.7V
AC22.6V
AC22.6V
AC11.7V
AC11.7V
AC4.7V
AC
29.2V
AC9.4V

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 IF IN
I02
AM IN
FM IN
VDD
PD
AIN
A OUT
Vss
X OUT
10K
0.047
100K
5 ~12P
1000P
A
B
C
D
0.58 H
390
220
27K
100P0.01
560
1K
4.7
DZS5.1B
10K
27P~ 33P
27P
7.2MHz
22K~100K
100
1000P
1000P
10K
1K
3.3K
10K
1K 1K 1K
470
ABCD
22
5.6K
0.01
A
B
C
D
E
F
LC72131M
PLL FREQUENCY
SYNTHESIZER
AM ANT
EXT
LOOP
FM ANT
(75 )
SCHEMATIC DIAGRAM-9
100
0.01
100
2SC2413
BUFFER AMP
2SK360
FM OSC
2SK360
RF AMP
22P 15P
22P0.022
2.7K47P
33K
100K
2P
8P
10K 10K 33K
33K
100K
0.022
100
27P
2P
4P
10K
220
0.022
0.022
150
5P
18P
27P
2SC2059
FM MIXER
0.47 H
0.47 H
10P ~ 33P
330P ~
580P
1P ~ 5P
680 ~
2.2K
0 ~ 220
1 H
820K ~ 2.2M
0.022
680
1000P
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

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 IF IN
AM MIX OUT
REG
AM IF IN
GND
SD
ST
FM DET
Vcc
STRQ
FM/AM
MONO
AM OSC OUT
AM OSC
AFC
AM RF IN
AGC
AM OUT
DET OUT
PILOT IN
MPX IN
PILOT OUT
Rch OUT
Lch OUT
BADFC E
470
2.7K1
68
0.1
1000P
470
0.01
5 ~ 150
AB
1
22
100
0.018
11K
100K
4700P
B
A
4700P
100K
1K1
0.018
1000P ~ 0.01
150P
68K 0.1
1022K4.7
4.7
47K
1000P
3.3
A
D
B
C
10K
0.01
330
1000P
LA1833MN
FM/AM IF AMP,
DET/AM OSC,MIX/FM MPX
A
B
B
A
D
A
2SC2712
SWITCHING
3.3K
2SC2413
FM IF AMP
2SC2413
FM IF AMP
330
SCHEMATIC DIAGRAM-10
11 13 245678910
1K ~ 10K
470
4.7K ~ 22K
0.022
0.1
DTA114
POWER SUPPLY
(FM:ON)
1K ~ 10K
100P ~ 1000P
0.01 ~ 0.068 10K ~ 100K
1K ~ 10K
270 ~ 680
270K ~ 680K 10P ~
39P 270K ~
680K
CL
DO
DI
Lch OUT
CE
Rch OUT
DET
+B(2)
SD
+B(1)
T.GND
To MAIN CIRCUIT(CP101)
on SCHEMATIC DIAGRAM-4
B
1
0.47
:POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE