Aiwa HV-FX970 Service Manual page 4

SCHEMATIC DIAGRAM-3
A MAIN(TUNER/IF SECTION)C.B
5.3VA 1B
9V 2B
To
POWER 3B
5VT
SECTION
33VT 4B
1B 6B
5B
5V
GND 6B
TUN.AUDIO 1E
To
2E
SCART
MOD.AUDIO 3E
SECTION
VIDEO 4E
1E 5E
TU VIDEO 5E
OSD VIDEO 1H
IIC CLOCK 2H
3H
IIC DATA
To
VIDEO(VPS) 4H
SYSCON/
5H
SERVO TU SEC "H"
SECTION
1H 9H
TU SECVL "H" 6H
7H
IIC CLOCK
AFT 8H
IIC DATA 9H
:PB VIDEO SIGNAL
:REC VIDEO SIGNAL
L7V1
100u
C7V7
C7V2
C7V1
1/50
0.47
47/16
24 23 22 21 20 19
VDD1 RST
V.Sync
Sep.
IC7V1
Timing
Sync Sep/
LC74793
Generator
Data
Sucer
Sync
Detect
NC
VSS1
1 2 3 4 5 6
X7V1
17.734476MHz
R7V8
T/W
C7V3 C7V4
12P 12P
:PB AUDIO SIGNAL
: WAVEFORMS No.
:REC AUDIO SIGNAL
5
L702
L701
100u
C702
10/16
R702
C708
R7V6
C7V8
5.6K
1/50
R701
18 17 16 15 14 13
VDD2
Data
Latch
AFC
IIC BUS
(VCO)
Interface
L703
10u
Data
Acousition
C706
470/6.3
VSS2
7 8 9 10 11 12
R7V5
C7V9
10K
R7V4 C701 ZD701
C7V6
R7V7
2.2K 4.7/50 MTZ33B
4.7/50
T/W
C7V5
0.056
T/W
C705 C704
47/16
0.01
L705
100u
C714 C713
0.01
47/16
C7M5
R7M1
10/16
T/W
C7M1
R7M5
T/W
C7M3
R7M6
T/W
C7M4
R704
470
R7M4
R7M3
C7M2
47/16 1K
Q701
KTA1267
R706
220
R707
470
C707
C711 C710
0.01
C703
C7S1 4.7/50
33/16
Q7S1
KTC3199
R7S1
22K
C712
L704
8.2u
6
TU701
1 BB
2 AUDIO
3 SDA
4 4MB
5 SCL
6 VIDEO
7 MD TU
8 RF AGC
9 NC
10 AS
11 SCL
12 SDA
13 B+
14 B+
15 NC
16 TU
17 TP
1
18 IF
19 SW 1
20 SW 2
4
21 AUDIO
3
22 SIF
23 AFT
2
24 VIDEO
25 NC