Panasonic PV-4601 A Service Manual page 177

VIDEO/NORMAL AUDIO BLOCK DIAGRAM
REC LUMINANCE REC CHROMINANCE REC VIDEO PB LUMINANCE
(PV-4601 A, PV-4601-K,
UHF/VHF TUNER
PV-4651, PV-4651-K)
/TV DEMODULATOR UNIT
IC3001
D
+5V
VIDEO 17 24 VCC
(FROM IC6001(44))
VIDEO
2
Q3001 SIGNAL
7.16MHz
GENERATOR
CHARACTER
VIDEO 5 BUFFER 13
MIX
15
(PV-4601 B)
(FROM IC6001(18))
VIDEO 18 SYNC
LPF
11 17
SERIAL DATA 0
SEPLPF
(FROM IC6001(16))
VIDEO OUT 10 CHARACTER 6
SERIAL CLOCK
GENERATOR
(REAR JACK) L/C
CONTROL
OSC
(FROM IC6001(27))
OSD-CS(L) 9 7
L3302,C3307
E
C3308
TP3001
TP3009
VIDEO IN1
(REAR JACK)
J3004
(WITH FRONT A/V JACK) NOT USED
(WITHOUT
FRONT A/V
JACK) IC3402
Å1
(FROM
13 11 IC6001(53))
INPUT
(WITHOUT
SELECT 2
UHF/VHF TUNER
Hi-Fi AUDIO) 14
/TV DEMODULATOR UNIT
12
AUDIO 1
10
J4003
(PV-4601 B)
AUDIO 14
1
15
2 VIDEO IN2
AUDIO 16
(PV-4601 A, PV-4601-K,
PV-4651, PV-4651-K)
IC3402
(WITH FRONT A/V JACK
/WITHOUT Hi-Fi AUDIO)
AUDIO OUT
(REAR JACK)
NOT USED 9
5
AUDIO IN2
4
TP4002
AUDIO IN1
(REAR JACK)
3
(WITHOUT
FRONT
A/V JACK)
TP4001
J4002
(WITHOUT Hi-Fi AUDIO)
(TO U9001(18))
TUNER AUDIO
NOT USED
BEEPER (FROM IC6001(45))
(WITH CM ADVANCE)
AUDIO P1541 P2503 P2501 P6201
HEAD
2 2 22 22
(WITH Hi-Fi AUDIO)
P1541 P2503 P2501 P6201
NOT USED
1 1 21 21
AUDIO
(WITH CM ADVANCE)
BIAS
ERASE P1541 P2503 P2501 P6201
R7007
HEAD
OSC
3 3 20 20
(TO U9001(8))
INPUT
(WITHOUT CM
P1541 P2503 P2501 P6201
LEVEL
ADVANCE)
T4101,Q4101
4 4 19 19
(TO U9000(4))
(55kHz)
FULL
TUNER AUDIO P3504 P3501 P3001
ERASE
HEAD
1 22 22
(FROM IC4201(52))
P4203 PIN
RF AUDIO P3504 P3501 P3001
26 26
2 21 21
(TO IC4201(54))
P4203 PIN
NORMAL AUDIO
28 28
(FROM IC4201(62))
P4201 PIN
NORMAL AUDIO
7 7
PB CHROMINANCE PB VIDEO REC AUDIO PB AUDIO
Å1:INPUT SELECT
MODE R3002,R3010
SIMUL
LINE1 LINE2 C3001
TUNER
CAST
SIGNAL
(TO IC6001(76))
INPUT SELECT 1 L L H H LPF
V-SYNC
(FROM IC6001(22))
INPUT SELECT 2 L H H L V-LOCK PULSE
CT3
V3
V10
V11
R3301
C3305
IC3001 (VIDEO/AUDIO PROCESS)
C3306
25 19 13
(TO U9001(4))
VIDEO
NOT USED
ART V/H
NON
(WITH CM ADVANCE)
LINEAR
SYNC MIX
DE-
LINE
REC
EMPHASIS
18
AGC
Y/C REC
V2
CLAMP
MIX
15
PB
LPF
TUNER
V1
PB
16
AGC
(WITH
DETECTOR
Hi-Fi AUDIO)
SYNC
SEPARATION
72
(FROM IC6001(11))
VIDEO EE(H)
Å1
(FROM IC6001(52))
12
INPUT SELECT 1
CT2
LINE
73
AU1
AU2
TUNER
AGC
70
MUTE
CT5
(FROM IC6001(5))
PB
69 MUTE(H)
AUDIO MUTE(H)
REC
LINE
68 3.58MHz
BURST
AMP
DOWN
BPF
C
PB
57
TP4003
58
REC
AU4
AMP
61
SP/LP-ON
59
PB
AMP
60
SLP-ON
62
REC-ON
COLOR
REC-ON KILLER 84
SW
64
Q4002
V9
Q3221
AU3
Q3222
CNR
PHASE
COMPENSATOR
REC-
OFF
Q4003 63 56 55
Q4001
CNR
PHASE
+5V
CT6
(FROM IC6001(37))
CT7
(WITH CNR) NOT USED
VIDEO DELAY REC(H)
R3222,R3223
IC3221
(WITHOUT
C3225,C3226 NOT USED
QUASI S-VHS)
(FROM IC6001(44))
L3222
(WITHOUT
7.16MHz 7 CCD 1H
DELAY
QUASI S-VHS)
LINE
(WITH CNR)
6 4 LPF
J3002
NOT USED +5V
(WITHOUT
CNR)
IC3201
CCD 1H
12 11
h
DELAY LINE
V4
22 23 29 27 52 30 33
W/ CNR
CLAMP CLAMP S-VHS
PB /VHS
DETECTOR
LPF
GCA GAIN
REC
CTL
DETECTOR W/O CNR
AMP
REC
NON LINEAR
1/2fH MAIN
CLAMP
EMPHASIS
SHIFT EMPHASIS
(LP/SLP)
ON
PB
/DETAIL
YNR
ENHANCER(SP)
OFF
DOC SW
51
MAIN FM
DE- LPF
ANR
(FROM IC6001(50))
DEMODULATOR
EMPHASIS
AIP CTL SIGNAL
(WITH AIP)
DOP ENVE DOUBLE
48
DETECTOR DETECTOR LIMITER
S-VHS
VHS
8MHz
V7 V8 PEAKING
IC3201 TRAP
VHS
AMP
PB
LP/SLP
11 6 5 9 LPF
REC
COMB
REC MAIN
ACC
FILTER
SP
CONV
PB
REC REC
ACC
DETECTOR
PB PB
4.21MHz
BPF1/8
SP/LP
COLOR
SLP
CNR
4
KILLER
DETECTOR
IC3201
A.CNR
CCD 1H
DELAY
AMP
11 12
LINE
2 79
CNR
GAIN
R3224 R3225
+5V
J3001
(WITHOUT CNR)
(WITH 4 HEAD)
NOT USED
(FROM IC6001(97))
(WITH 2HEAD)
ROTARY SW
HEAD SW PULSE J6003
(TO IC6001(85))
TP3011
ENVELOPE VOLTAGE
R3007,R3009,R3017
C3010,C3011,C3012
L3001,L3004
LPF
i
38
36 40
AT ENVE
DETECTOR
REC-
REC
ON
RF
GAIN
Y Y/C
39
CTL
AGC
MIX
AMP
PB
FM
C
MODULATOR
BUFFER S-VHS
PEAKING
AMP
Q3123
Q3101
Q3121
AIP
SW
NOT USED
(WITH QUASI S-VHS)
44
PHASE
630kHz
COMPENSATOR
TRAP 46 45
REC
BURST
UP 629kHz
LP/SLP
GAIN
COLOR
LPF
CTL
KILLER
PB AMP
SW
DL
SP
37
4 PHASE
SUB
1/8
CONV ROTARY
PB(L) 49
SP(L)
75
/LP(M)
SIDE
1/320
AFC VCO /SLP(H)
LOCK
REC
EE(H)/VV(M)
VXO/XO APC
CUE/REV/SLOW
PB
/STILL(L)
80 82 77 3
X3001
VIDEO HEAD AMP CIRCUIT
(FOR 4HEAD MODEL)
IC3501
P3001 P3501
SW+12V 35
15 15
k
TP3501
(FROM IC6001(6))
P3001 P3501
PB+5V
LP
PB(L) 31
CTL 16
/SLP
17 17
c
j
(FROM IC6001(37))
P3001 P3501
AMP
25
VIDEO DELAY REC(H)
13 13
(WITH
18
Hi-Fi AUDIO)
(FROM IC6001(98))
P3001 P3501
SP
32
HEAD AMP SW
18 18
REC
AMP
4
P3001 P3501
b
30
16 16
d
P3503
PB L
6
a
P3503
R
(FROM IC6001(21)) 5
e
P3001 P3501
1
HEAD SW PULSE
SP
20 20
P3503
AMP 6
4
P3503
AMP 13
(TO IC6001(99)) ENVE 1
P3001 P3501
LP
33
/SLP
ENVELOPE DET DET f
19 19
P3503
L
2
P3503
R
g
3
AMP 11
(WITHOUT
Hi-Fi AUDIO)
(FOR 2HEAD MODEL) NOT USED
IC3501
k
TP3501
P3001 P3501
CURRENT
10
9
AMP
13 13
AMP
TP3002
B
REC
P3001 P3501
16
AMP 6
16 16
PB
d
L
SW+12V
CT4
R
e
PB+5V
P3001 P3501
CTL
2
17 17
4
AMP
(FROM IC6001(7))
P3001 P3501
LP/SLP(H)
19
15 15
(FROM IC6001(8))
P3001 P3501
SLP(H)
1
CT1
20 20
(FROM IC6001(11))
VIDEO EE(H)
1
(FROM IC6001(12))
CUE/REV/SLOW/STILL(L)
P3503
9 VIDEO SP
L HEAD
P3503
8 VIDEO SP
R HEAD
P3503
7
P3503
VIDEO
4
LP/SLP
L HEAD
P3503
5
VIDEO
P3503 LP/SLP
R HEAD
6
P3503
1 VIDEO
L HEAD
P3503
2 VIDEO
R HEAD
P3503
3