Aiwa HV-FX8000 Service Manual page 9

SCHEMATIC DIAGRAM-5 (TUNER/IF SECTION)
TADC-H002F
VIDEO
DETECTOR
SAW SIF
FILTER FILTER
IF FM
AMP DETECTOR
MIXER VHF
PLL
IC OSC
UHF UHF
MIXER OSC
VHF UHF
RF AMP RF AMP
RF CARRIER VIDEO
OSC MODULATOR
OFF
THROUGH SW
ANT
IN
VHF/UHF/CATV
To
REG9V
POWER
5.1VD
SECTION
36V
1B 4B
GND
To
Hi-Fi
MOD AUDIO
SECTION
AUDIO(TU)
1E , 2E
TU701
TUNER
AFT
NC
IF
AGC
IF
NC
BLOCK
TU30V
NC
REG5V
NC
ENABLE
NC
TUNER
RF AGC
BLOCK
CONTROL
FM
REG5V
MODULATOR
4.5MHz
TANK
MODULATOR
BLOCK
OUT
TO
TV
SW701
CH3
CH4
A MAIN(TUNER/IF SECTION)C.B
1B
2B
3B
4B
1E
2E
20
19
C704
0.1/50
18
17
16
15
R701
3.9K
14
C701 ZD701
4.7/50 MTZ33B
13
12
C709
11
220/6.3
10
9
8
7
6
R702
1K
5
4
3
R710
C703
C702
1.5K
2 0.01
220/6.3
1
R711
18K
:PB VIDEO SIGNAL
:REC VIDEO SIGNAL
:PB AUDIO SIGNAL
:REC AUDIO SIGNAL
N O T E : V O L T A G E P B O R R E C M O D E
*
13
C710
0.1
R703
470
C705
470/6.3
2 . 8
L701
2 . 1
Q701
27u
KTA1267
0
R706
470
R707
470
R708
33K
C708
3.3/50
1F VIDEO(TU)
2F VIDEO(LINE)
To
A/V
SECTION
1F , 2F
1G VIDEO
2G VIDEO(ACSS)
3G AFT
4G IIC DATA
5G IIC CLOCK
6G VCR "H"
To
SYSCON/
SERVO
SECTION
1G 6G