Aiwa HV-FX7800 Service Manual page 16

BLOCK DIAGRAM -4/8 (VIDEO SECTION)
IC301
LA71598M
AUDIO/VIDEO
PROCESSOR
74 57
MAIN
ACC
CONV
LP 'A' PB 82
C LPF
LP 'B' PB 85
SP 'B' PB 88
SP 'A' PB 91
FM
PB FM
DEM
AGC
ENV
V. ENV
93
DET
DOUBLE
PB EQ
LIMIT
10 18 17
11
PB
PEAKING
Q301
COLOR
A.MUTE A.AMP V.H S/W
"H" ROTARY SW
To
:PB VIDEO SIGNAL
SYSTEM CONTROL/
:PB YSIGNAL
SERVO/OSD
:PB CHROMA SIGNAL
SECTION
IC301
LA71598M
AUDIO/VIDEO
PROCESSOR Q304
71 72 61
COMB
BPF AMP
LP REC 84
CCD
LPF
90 +
SP REC
REC FM
EQ
:REC VIDEO SIGNAL
:REC Y SIGNAL
:REC CHROMA SIGNAL
FM W/D
MOD CLIP
10
11
A.MUTE COLOR A.AMP V.H S/W
"H" ROTARY SW
To
SYSTEM CONTROL/
SERVO/OSD
SECTION
Q304
59 52 54 51 61 72 71
46
C. COMB LPF
Y
DELAY
45
Q303
43
41
NL
Y/C
YNR
DE EMP
MIX
LPF
SUB
LPF
SERIAL
CLAMP
DECODER
60dB AMP
21 20 23 24 28 29
MAIN
DE-EMPH
16
Q302
CLOCK DATA C SYNC
V.OUT
(TO MICOM)
51 52 54 57 59
C. COMB
46
Y
DELAY
45
BPF1
43
YNR
41
34
DETAIL
Y-LPF
36
ENH
38
S/W
FBC
NL EMPH
32
SERIAL
DECODER
AGC
31
18 19 23 24 28 29 30
MAIN
EMPH
R308,R309,
C. SYNC REC 'H'
C309
V.OUT
CLOCK DATA
(TO MICOM)
-16-
IC7V1
LC74793
VPS/PDC DECODER
DATA
LATCH
6
IIC BUS DATA
INTERFACE ACQUISITION
7
SYNC
SEP
Q303
PMK02 PKM02
JK901
1
VIDEO
ENTREE(AV 3)
V. IN 1
KEY 1 C.B
<4300>
To
SCART
SECTION
<7800>
To
Hi-Fi AUDIO/
SCART
SECTION