Panasonic AG-520VDH Service Manual page 41

IC3001 VIDEO/AUDIO SIGNAL PROCESS / HEAD AMP IC- DETAIL BLOCK DIAGRAM
REC VIDEO SIGNAL PB VIDEO SIGNAL
80 79 78 77 76 75 74 73 72
B-Y
INVERT
CR DET
81
COME
82
CCD
CONT
R COLOR
DET DET
LEVEL
DETECTOR
83
P
84 ENVDET HPF
85 MIX LEVEL
B.E
ADJUST
SP2
86
CH2
REC
SP2 + LPF
MUTE
CH1
87
SP1
88
VCA
SP1
EXT
89
INT
SP2
90
SP
SP2
CH2
91
SP
CH1
SP1
EXT INT
92
SP1
93
P
FH
94
TRAP R
SP ON
PREAMP
95
R P
REC ON
REC
96 FILTER
FM MOD
EP ON
97
FO/DEVADJ
VCA
DET
REC
98
MAIN EMPHASIS
EQ
CARRIER OFFSET
W.C/D.C
99
100
BAND
GAP
1 2 3 4 5 6 7 8 9
REC AUDIO SIGNAL PB AUDIO SIGNAL
71 70 69 68 67 66 65 64 63 62 61
X-TAL
DOWN
VCO/OSC
CONV
2FSC
REC PB REC ACC
KILLER DISCRI
APC APC AFC DET
APC
SW
CLPF1 CLPF2
P
C-ACC
CHROMA
+
C.K
ACC
4PHASE
P R
C-ACC
FEC
L-DET
TRAP
MAIN MAIN
+
CONV1 CONV2
P R R P
R
FH HPF
P
CTL TRAP
REC TRAP C-D
4.43PAL
HiFi TRAP DELAY MPAL
P
DELAY
2MLPF
ACC
HPF
R
SD SD
DELAY
P
SQPB SQPB
R
P-EQ
S-DET
N.L.
ET LPF
EMPH
629 FM
G-EQ PC
TRAP AGC
DO
DET
VIDEO AGC
DET DLIM
ATP
DEMO
P
SUB
LPF
R
REC FBC+ALC
PB AGC+APL
ATT
-4dB
MAIN
P R
DE EMPHASIS
ATT ATT ATT
-6dB -10dB -10dB
10 11 12 13 14 15 16 17 18 19 20
60 59 58 57 56 55 54 53 52 51
GND
CLOCK
LCVCO DRIVER
Y-CCD
ACC CHROMA
SW ACC DET
MODE
CONTROL
P
VCA
R
R
CCD
LPF
C-CCD
CCD SECTION
R P
P
PILOT PILOT NP
B.D C.K
ADD ERASE CONV
R
P
BPF
INT EXT
R
6dBAMP
C-
SQUELCH
N.L SQPB
Y-LPF
DE-EMPH EQ
LPF
SQPB
SQPB
DEH
GCL
P
HP-NC
R
TRAP-NC YNR
P
DO
R
GCL
R FEED BACK
DO/REC
CLAMP
VIDEO ALC CLEAR
R*SVHS
SYNC
GCL
R*SDECK
R*SDECK
AGC
PG
DET R*SDECK
R*SDECK
PG
SQUE-
V-AMP
LCH
R*SDECK
SYNC
SEP
ATT
GCL GCL
-10dB
21 22 23 24 25 26 27 28 29 30
41
IC4601 TONE CONTROL
IC - DETAIL BLOCK DIAGRAM
24 23 22 21 20 19 18 17
GND
50
49
VOLUME
CONTROL
48
VOLUME
CONTROL
47
BASS
CONTROL
46
BASS
CONTROL
45
TREBLE
CONTROL
44
TREBLE
CONTROL
43
SURROUND
42
AGC
VOLUME VOLUME
41
CONTROL CONTROL
40
1 2 3 4 5 6 7 8
39
38
37
36
35
34
33
32
31
IC3001 DETAIL BLOCK DIAGRAM
IC4601 DETAIL BLOCK DIAGRAM
AG-520VDH
16 15 14 13
I 2 C
CONTROL
VCC
9 10 11 12
AG-520VDH