Aiwa HV-FX8000 Service Manual page 6

SCHEMATIC DIAGRAM-2 (AUDIO/ VIDEO SECTION)
A MAIN (AUDIO/VIDEO SECTION)C.B
To
Hi-Fi PB B 9H
Hi-Fi
Hi-Fi REC 7H
SECTION
Hi-Fi PB A
8H
7H 9H
P3D01
NC 1
PB CH A 2
REC 3
PB CH B 4
SP PB CH1 5
SP REC 6
SP PB CH2 7
EP PB CH1 8
EP REC 9
EP PB CH2 10
To
CYL.HEADS
To
SYSCON/ CTL(-) 2K
SERVO
CTL(+) 1K
VR301
SECTION
FL301
REC BIAS ADJ
OSC
1K , 2K
6
P3D02
CTL CTL(+) 1
5
HEAD
CTL(-) 2
C354
0.022
4
VR301
100K
C315
AUDIO A/E(-) 3
47/16
ERASE
A/E(+) 4 C329
HEAD
270P
A.REC 5
AUDIO
A.PB 6
HEAD
R339
R310
10
2.7K
R
R342
P3D03
FULL
1.5K 0
GND 1
ERASE
HEAD FULL ERASE 2
Q303
KRC103M
C371
680P
HA118217NF
AUDIO/VIDEO PROCESS
TP
(H/SW.30)
TP
11
(RF)
- 2.1 2.8 - - 2.1 -
80 79 78 77 76 75 74
(-)
(2.7)
-
81 V.H/SW.30
81
TANK
C357 1.1
82
0.033
HEAD
SW1 KILLER
- Control
C358 DET OUT
HEAD
83 ME
SW2
3.3/50
SECAM
DET
84 V.ENV. -(0)
84
ENV DET
12 0
1/2
85 GND
HPF 2FL VCO
C360
COMP
0.01 2.1(2.3)
86
C361
SW32
0.01 2.1(2.3)
SW28
87
SP2
SP2
C362
SW33
0.01 2.1(2.3)
CH2
88
L-SECAM
C363
SW34
SW30
2.1(2.3)
0.01
89 CH1 SW27 L-SECAM
SP1
SP1
L309 100u 12 13 SW35
5.1 SP
90 Vcc VCA
C364 C365 C366
2.1(2.3)
SP2 SW29
0.01
47/16 0.01 SP
91
REC
C367
SW36 CH2
MUTE
2.1(2.3)
0.01
SW31
92 SW7
SP2
C368
SW37 CH1
SP1
2.1(2.3)
0.01
93
C369
SW38
2.1(2.3)
0.01
94 SP1
SW39
13
0(1.4)
L310 95 DET
From
100u ME
2.1(2.3)
SECAM
96 DET
C359
C355 P
- VCA
47/16
0.01 97 SW40
SW2
SP
R
ON PRE
-
C370 R328 AMP
98
R307
10/16 2.2M SW3
10K
99 A.MUTE -
99 REC
ON
BAND
SW1
REC
2.5 GAP
EP
EQ
100 ON
GND
1 2 3 4 5 6 7
C301 R301
0.01 330K 2.5 2.5 0 2.5 0 2.8 2.5
C307
10/16
R302 R303
220
12K
1
C303
330P
C302
22/16
2 C306
4.7/50
R308 R309
R306
47 1.5K
Q301
3 22K
KTC3205
REC BIAS OSC
C313 C314 R340 R341
0.01 0.033 2.2 2.2
L301
100u
Q302
Q305
KTA1273
KTC3199
R314
Q307
Q304
4.7K
KRA103M
KTA1267
5.3 Q306
R
KTC3199
R315
R311
R312
0
4.7K 2.7K
47K
C320
R313
10/16
12K
7
L305
22u
63 62
L306 C342
12u 47/16
C346
5P
IC301
X301
3.579690MHz
10
2.1 2.2 2.1 2.5 2.5 0 5.0 5.0 2.3 - - - 5.0 2.8 2.8
73 72 71 70 69 68 67 66 65 64 63 62 61 60 59
C GND (-) C VCC
LC VCO VCA
9
X-tal CR Det.
2fsc Serial Cont
VCO/OSC
2fsc
VCO Interface
CLOCK
SW41
LEVEL Det1
SW26
fH Sync
Control
P R
REC REC PB Color Killer
PB/REC
AFC APC APC ID Det.
Discri
LEVEL Det2
SW25
ACC APC
DOWN 1/2
SW
Det DL R
Conv.
Phase SW
Delay CLPF
CLPF
P SW24
P
CTL TRAP
ACC R
fH HPF
SW20
2M LPF
R
R Main Main
P
Conv1 Conv2
SEP
SW18 4phase Gen
HPF SW22
SW23 P
COMP
SW19 TRAP R
P R
LPF
P
MIX
BPF
SW21
LEVEL C.K B.E
D1-D18 R
ADJ
CONTROL
P SQPB
Quasi-S SW8
629 P
FM AGC G
DL
TRAP EQ Edge.
EQ
R Enhancer
DET SQPB
DO Edge
DLIM
Det Delay
1M HPF
R
N.L. N.L. SW13
D.E.
7M LPF Emph De-emph
DEMO N.C.
P
LAG READ
Sub LPF SQPB EQ
LPF SQPB
SW4
SW5 SQPB
SW42
Main
FM MOD De-emph FBC/ALC
Main Emph SW10
fo/Dev ADJ
carrier Offset YNR
DO/
P R
W.C/DC SW9
S-DET REC
SW14
P R
DO
SW6 Y-LPF
SW12
3 R
R P
P Clamp
2 SW11 Clamp
(2.1) (2.1) (-) SW15 (2.4)
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
2.5 2.5 2.5 2.5 5.0 1.6 1.6 2.3 - 1.8 2.1 2.8 2.8 2.1 2.2
(0)
R330
82K
3
C322
R322
0.1
C311 R327
6.8K 1
C324
22/16 3.3K
10/16
C318 C321
C312 47P
C310 150P
4.7/50
0.1
L303
R325
270u
1.5K
C316 C317
0.01 47/16
*
L302
100u
51 50
C343
0.01
R329
1.5K
C339
C337 7
0.1
0.1
9
2.8 - -
2.8 - 2.8 2.1 1.9
58 57 56 55 54 53 52 51
CCD-
8
CONT -
50
6db AMP 6db AMP
6
0
CCD
49
LPF
C-SQUELCH
Sync.Sep.
0
48
CLEAR
SYNC
0
47
White
C.K
Limiter
SQUELCH 1.9
46
N P
Feed Back
0
Clamp
45 C336
Video ALC 0.01
2.5
B.D
44
5
5.1
43
Clock
Driver
1.7
42
5.1
41
5.1
Pulse 40
Gen.
2.7
P 39
SW17
5.1
R 38
-
Mode
37 L304
Control
100u
5.1
CCD-VCC 36
C334 C335
REC 2.7
0.047 220/6.3
35
AGC Det
PB ALC
C333
0
CCD
34 330P
Video
0
AGC SW16
ATT 33
(-10dB)
0
32 C332
3
ATT
ATT 0.1/50
(-10dB)
(-10dB) -
LPF
31
23 24 25 26 27 28 29 30
4
2.8 2.1 1.4 2.1 0 2.8 1.9 2.8
C331
1/50
C326
C3F1
0.1
1/50
C328
10/16
:PB VIDEO SIGNAL
:REC VIDEO SIGNAL
: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
: WAVEFORMS No.
8
1C 5.1VA
2C 5.1VD
3C GND
To
POWER
SECTION
1C 3C
81
3K V.H/SW30
99
4K A.MUTE "H"
51
5K D-V SYNC
62
6K IIC CLOCK
63
7K IIC DATA
50
8K C.SYNC
84
9K V.ENV.
10K REC "H"
11K
12K VIDEO
VIDEO(L2)
13K
To
R3F1
75 SYSCON/
SERVO
SECTION
3K 13K
1F VIDEO(TU)
2F
VIDEO(LINE)
To
TUNER/IF
SECTION
R323
1F , 2F
75
JK301
OUT
VIDEO
IN
R326
75
OUT
AUDIO(L)
IN
OUT
AUDIO(R)
IN
1H AUDIO-R(L1)
2H
N.AUDIO
3H N.AUDIO
4H AUDIO(R)
AUDIO(L)
5H
6H AUDIO-L(L1)
To
Hi-Fi
SECTION
1H 6H