Panasonic PV-DF204 Service Manual page 185

IC3001 VIDEO/AUDIO SIGNAL PROCESS / HEAD AMP IC- DETAIL BLOCK DIAGRAM
21
20 19 18 17 16 15
VCC
22 VREG
TUNER
LINE2
23
AGC
LINE1
REC
24
AGC DET
COLOR
PB
KILLER
ARTIFICIAL
Y/C MIX
25 SW
V/H SYNC MIX
CLAMP
GCA
DETECTOR
26
GAIN
27 LPF
CLAMP
CTL AMP
SYNC
SEPARATION
28 GND
ON
REC
YNR
29
OFF CLAMP
DOC SW
PB
30
HPF LIMITER
ANR
31
REC PB
32
HPF
LIMITER
33
34
REC RF FM W/D MAIN
35
EQUALIZER MODULATOR EMPHASIS
CLIP
36
37
REC
RF
38 AGC
629KHz DOP ENVE
PB
AGC
TRAP DETECTOR DETECTOR
39
DET
AT ENVE
REC
DETEC-
AMP
40
TOR
VHS
PEAKING BPF
/GAIN CTL AMP
41 Y/C MIX
REC-ON
8MHz
PHASE
42 GND
TRAP
COMPENSATOR ROTARY
VCC SW
43 44 45 46 47 48 49
REC VIDEO SIGNAL
14 13 12 11 10 9 8 7
2
I C BUS
COMPOSITE
REC
3.58MHz BURST
ATT
UP/DOWN
BPF
COMPONENT
PB
COMPONENT
COMPOSITE PB
4.8MHz ACC DET
PB
REC
TRAP
REC
ACC
PB
MAIN
REC
CONV
DELAY LPF GCA REC
GCA
DET
PB
ROTARY
CCD
LPF
REC
REC
MAIN
CONV
PB PB
NON LINEAR
DE-EMPHASIS
NON LINEAR
+
EMPHASIS
RF IN SUB LPF
SP
PB
REC
CLAMP
PB LP/SLP
REC
MAIN
DE-EMPHASIS
COLOR REC 629kHz
SP
AMP
KILLER SW LPF
+
LP/SLP
DOUBLE FM
LPF
LIMITER DEMODULATOR
S-VHS
REC-ON
REC
-OFF
50 52 53 54 55 56 57
51
PB VIDEO SIGNAL REC AUDIO SIGNAL PB AUDIO SIGNAL
6 5 4 3 2 1
VCC
84
CNR
83
CHROMA
PHASE
82
COMPEN-
SATOR
VXO
81
2FSC
X2 BPF
80
FSC
SUB
1/40 AFC
REC
CONV
79
1/4 SIDE LOCK
REC
PB
78
LPF
-1
+
PB
77
GND
1/4 VCO
76
PB
FREQUENCY
DET
REC
75
4 PHASE
LPF
SELECT APC
GND 74
COLOR
KILLER
DETECTOR
73
PB
MUTE
1/2
72
VCC
LINE
TUNER
71
AGC DET 70
fH LINE
69
TRAP AMP
REC
VCC 68
PB
67
LP/SLP
-ON
66
REC
65
SP/LP-ON
AMP
PB AMP
REC-ON
64
REC-ON
SLP-
GND
ON
58 59 60 61 62 63
IC4601 TONE CONTROL IC - DETAIL BLOCK DIAGRAM
24 23 22 21 20 19
VOLUME
CONTROL
VOLUME
CONTROL
BASS
CONTROL
BASS
CONTROL
TREBLE
CONTROL
TREBLE
CONTROL
SURROUND
VOLUME VOLUME
CONTROL CONTROL
1 2 3 4 5 6
18 17 16 15 14 13
GND
I 2 C
CONTROL
AGC
VCC
7 8 9 10 11 12
IC3001 DETAIL BLOCK DIAGRAM
IC4601 DETAIL BLOCK DIAGRAM
PV-DF204/PV-DF2004/PV-DF2004-K
/PV-DF274/PV-DF2704/PV-DF2704-K