Aiwa HV-FX8000 Service Manual page 8

SCHEMATIC DIAGRAM-4 (Hi-Fi AUDIO SECTION)
A MAIN (Hi-Fi AUDIO SECTION) C.B
5.1VA 1A
To
POWER
SECTION
1A 4A
5.1VD 2A
REG9V 3A
GND 4A
AUDIO-R(L1) 1H
R823
27K
N.AUDIO 2H
3H
N.AUDIO
C833
10/16
To
R825
A/V
10K
SECTION
Q803
1H 6H KTC3199
0
4H
AUDIO(R)
R826
R828
10K 1.5K
Q801
KTC3199
0
5H
AUDIO(L)
R827
R830
10K
1.5K
Q802
KTC3199
0
AUDIO-L(L1) 6H
C846
0.47/50
1SS133
MOD AUDIO 1E
To
TUNER/IF
SECTION
1E , 2E
AUDIO(TU) 2E
:PB AUDIO SIGNAL
:REC AUDIO SIGNAL
O N E V O L T A G E : P B O R R E C M O D E
*
T W O V O L T A G E S : P B A N D ( R E C ) M O D E
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R820
39K
R821
12K
R815
15K
L801
100u
C822 C823
0.01
47/16
R
R816
(L1)
39K
R
(L2)
R
R817
(TU)
15K
C827 C825 C826
1/50
1/50 1/50
0.4 2.6 2.6 2.6 2.6 5.1
36 35 34 33 32 31
C828
INPUT SW
2.6
10/16
37
R822
C837
SW7
Nor-Fech
8.2K 1200P EVOL
2.6 /AGC
R
38 L+R
Vcc SW22 L
SW6
9.4
PB TRAP LPF
39
C830 C831
BS1
2.5
0.01 47/16
(1)
MUTE SW18
40
DET
R
R810 C832 SW19
NORMAL
2.2M 22/16 L
4.5
41
R
MUTE
RF C
BS1
0
SW16
SW17 L
42
L
R NORMAL
0
43
0
44
C834
R829
10/16 4.5
180
45
AMP
C835
R831
10/16 4.7
180
46 AMP SW1
1.6
EVOL
(1.2) /AGC
47 Log
DET LPF
1.3
INPUT
(1.2)
PEAK DET
SW
48 Log
1/2VCC(5V)
VREF1
D801 1 2 3 4 5 6
IC801 0.5 0 2.6 2.6 2.6 2.6
(1.1)
C803
AN3664NFB C802
10/16 1/50
Hi-Fi AUDIO
C805
1/50
PROCESS L
L
(TU)
(L1)
R806
R807
15K
39K
R803
39K
R802
12K
11
R814
39K
C820
33/16
C821
C819 C818 C817 C816
0.047
2.2/50 100/16 0.015 0.01
R812
510
2.6 1.6 0 2.6 2.6 2.6
30 29 28 27 26 25
PEAK DET
0
DET LPF
24
0.1
23
DAC(NTSC/PAL)
S/M
VCO
0.1
BUF.
22
REC LPF
SW
BS2 C815
NOISE
2.1 0.1
HI-FI
21
SW9
MIX
AUDIO LIM
2.0
20
PC PB LPF HPF
R832
1K
BS2
NOISE DET 2.6
HI-FI
19
MIX C813
Rch BPF
0.01
2.6
HOLD
FM LIM
18
TIMING
Lch BPF
R834
LINER SW
4.9 100
17
LOGIC R833
4.9
100
PC PB LPF
16
PB TRAP LPF
C812
0
AUDIO LIMIT
(2.7) 0.01
PB
15
SW4
MIX
REC
SW2
SW
REC LPF
NOISE 0
14
VCO
S/M
DAC(NTSC/PAL)
2.6
13
C811
0.01
7 8 9 10 11 12
2.6 2.6 1.6 0 2.6 2.6
R809 R808
C804
510
4.7K
1/50
C808 C809 C810
L
2.2/50 100/16 0.015
(L2)
C806 C807
0.047
33/16
R804
39K
R805
15K
IC802
AN3328S
R838
0(-)
15 PB ON
L804
9
100u 5.1
10 VCC
C843 3.4(3)
C845
11
DET
47/16 0.01
Hi-Fi RF
C842 0
TP
GND
12
0.01
L
1(1.8)
13
2(1.8) H
14
C824 R836 0(0.8)
L803 180P 15
1K
270u
0(5)
C844
16 H/SW
3.3/50
C838
270P
L805
100u
C870 C869
47/16 0.01
C861
R847
2700P
3.9K
C862
C865 C863
0.047
10/16 3.3/50
IC803
C866
R846 R845
10/16
CXA2104S 3.3K
3K
C864 C867
dBx TV NR
1/50 1/50
(4.0) 0 (4.0) (1.7) (4.0) (4.0) (1.7) (4.0) (4.0) (4.0) (4.0)
30 29 28 27 26 25 24 23 22 21 20
LPF RMSDET RMSDET
SW
LPF VCA VE
AMP
HPF
DEEM. (+4db)
LPF
1/2
VCA LPF FLT
1/4
STLPF
LOGIC
STIND
LPF
LPF
DEEM.
2
MATRIX I C BUS I/F LFLT
LPF VCA
1 2 3 4 5 6 7 8 9 10 11
(4.1) (4.1) (4.9) (4.9) 0 (4.0) (3.8) (4.1) (3.9) (5.2) (4.0)
R L
R842
C851
1M
1/50
C855
R840 R841
C852 4.7/50
100 100
5600P
C854
0.47/50
R843
C853
100K
0.012
12
2.7(2.5)
8
0(4)
7H
7 Hi-Fi REC
0(4)
C841
6 To
0.01
C840 0.01
A/V
0.6
SECTION
5 8H Hi-Fi PB(A)
0
7H 9H
GND 4
C839 0.01
0.6
3 9H
Hi-Fi PB(B)
0(4)
R837
2
100
0.5
1
R801
10K
1J AUDIO-R(L2)
2J
A.MUTE"H"
A.ENV
3J
To
4J REC "H"
SYSCON/
A.H/SW SERVO
5J
SECTION
IIC DATA
6J 1J 8J
7J IIC CLOCK
AUDIO-L(L2)
8J
C859
4.7/50
C858
1/50
(3.8) (4.0) (4.0) 9.3
19 18 17 16
VCC
NOISE
DET
LPF
SAP
VCO
BPF
SAPIND
VGR GND
12 13 14 15
(1.3) (1.3) 0 (4.3)
C857
R844
4.7/50
C856 62K
10/16 (1%)
VR801
100KB
VR801
STEREO
SEPARATION
ADJ.