Panasonic NV-SJ4140PN Service Manual page 78

IC3001 VIDEO/AUDIO SIGNAL PROCESS / HEAD AMP IC- DETAIL BLOCK DIAGRAM
30 29 28 27 26 25 24 23
VCC
DOP DET
S-VHS PHASE
8MHz
DET
DET TRAP COMPENSATOR
ENV
DET
S-VHS
DOUBLE
31
PEAKING
LIMITER
BPF &
AGC
VHS GAIN CTL AMP
629KHz
TRAP
32 GND
FM
LPF
DEMODULATOR
33
34
35
36 VCC
ENV
DET
37
38
L
PB REC
R
39 SP
40 LP/SLP
SP
41 GND
LP/SLP
42
43 D-REC
R
ON
L
44
45
46 VCC
47 VCC
48
49
50
SP/LP
-ON
PB AMP
REC
-OFF
51 52 53 54 55 56 57 58
22 21 20 19 18 17 16 15 14
GND
AT ENV
INT
DET
EE
W/D
CLIP
PB:OFF
EXT
VV
Y/C FM
MIX MODULATOR
RF
MAIN
DE-EMPHASIS
CLAMP
COLOR
KILLER SW
LIMITER
VV EE
APC
1/40
AGC
DET
fH SUB
AGC
Trap COMB
VV EE
REC
ROTARY
AMP
REC SLP
1/4
-ON -ON
GND VCC
59 60 61 62 63 64 65 66 67
NOTE: For placing a purchase order of the parts,
be sure to use the part number listed in the parts list.
Do not use the part number on this diagram.
REC VIDEO SIGNAL PB VIDEO SIGNAL REC AUDIO SIGNAL
13 12 11 10 9 8 7 6 5
GND
GCA
YNR
MAIN MUTE
EMPHASIS
LPF
ARTFICIAL
DOC
V/H
SW
SYNC MIX
CLAMP
YNR
ON
OFF
MIX
Y/C
EE VV
MIX
CLAMP
GCA DET
VV EE
HPF HPF
CLAMP
DELAY
LIMITER
LPF
NON LINEAR NON LINEAR
ANR
DE-EMPHASIS EMPHASIS
VV
VV
EE
REC
PB
PB
ACC
ACC
REC
DET
R F
I N
PB REC REC PB
SUB
MAIN MAIN
LPF
CONV CONV
PB REC
REC
LPF LPF
AMP
COLOR
KILLER
629KHz
REC PB PB REC
DETECTOR
LPF
SP
DET GCA
+
CCD
LP/SLP LPF
FREQUENCY 4Phase
DET select
REC
+
LP/SLP
SP
SP
PB
BPF
1/4 Side AFC
Lock
LP/SLP
-1 +
EE VV
FSC
2FSC
VCO
BPF
1/2
GND GND
VCC
68 69 70 71 72 73 74 75 76
NOTE:
FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES,
REFER TO BEGINNING OF SCHEMATIC SECTION.
PB AUDIO SIGNAL
4 3 2 1
V-REG VCC
ATT
TUNER
100
ATT
LINE 1
ATT
99
LINE 2
98
AGC DET 97
AGC
96
SYNC
95
SEPARATION
EE
94
93
92
91
90
89
88
2
I C
BUS
87
86
85
COMB CHROMA
AMP
PHASE
VCC
84
COMPENSATOR
83
Busrst up/down CNR
4.8MHz 3.58MHz COMPOSITE
82
TRAP BPF
COMPONENT
81
PB
REC
ATT
COMPONENT
X2 VXO
COMPOSITE
77 78 79 80
IC3001 DETAIL BLOCK DIAGRAM
NV-SJ4140PN/NV-FJ6140PN
COMPARISON CHART
OF MODELS & MARKS
MARK
MODEL
- - - - - A
NV-SJ4140PN B
- - - - - C
NV-FJ6140PN D
- - - - - E
- - - - - F
- - - - - G
- - - - - H
Not Used PT
LSJB2080