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Panasonic PV-4601 A Service Manual page 168

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Hi-Fi AUDIO/MTS/SAP BLOCK DIAGRAM
(WITH FRONT
AUDIO/VIDEO
JACK)
J4302
TP4203
IC4301
REAR
3
AUDIO
IN1 L CH
(REAR JACK)
5
TP4204
FRONT
REAR
AUDIO
13
IN1 R CH
(REAR JACK)
12
FRONT
(WITH FRONT
PIN
P4204
AUDIO/VIDEO
AUDIO IN2
38
38
JACK)
L CH
PIN
P4204
NOT USED
AUDIO IN2
36
36
R CH
(WITH FRONT
(WITHOUT FRONT
NOT USED
AUDIO/VIDEO JACK)
AUDIO/VIDEO JACK)
J4301
(FROM IC6001(45))
PIN
P4201
1
1
BEEPER
J4303
AUDIO
OUT L CH
TP4201
J4304
AUDIO
(WITHOUT
SPATIALIZER)
OUT R CH
TP4202
MTS/SAP CIRCUIT
U9001
a
(FROM U/V TUNER/TV
PHASE
DEMODU)
4
AMP
LPF
DETECTOR
TUNER AUDIO
(TO IC6001(87))
MTS
PILOT
7
LED
DETECTOR
MTS SIGNAL(L)
DRIVE
(TO IC6001(86))
SAP
PILOT
L+R
LED
8
CANCEL
SAP
LPF
SAP SIGNAL(L)
DRIVE
BPF
BPF
L-R
L-R
NOISE
DEMODULATOR
LPF
DETECTOR
MTS
(FROM IC6001(29))
SAP
SAP
2
DETECTOR
AUDIO DEFEAT(H)
DEMODULATOR
SAP
(FROM IC6001(30))
6
MAIN(H)/SAP(L)
MODE
(FROM IC6001(31))
SELECTOR
3
STEREO(H)/MONO(L)
IC4201
REC AUDIO
PB AUDIO
TUNER
5
L CH
4
2
LINE
A
9
G
14
51
11
H
50
I
(TO MAIN)
RF
PIN
P4203
52
RF AUDIO
AGC
26
26
(TO MAIN)
PIN
P4201
62
NORMAL AUDIO
7
7
(FROM MAIN)
PIN
P4203
54
NORMAL AUDIO
28
28
B
LINE
64
R CH
4
TUNER
(FROM
R4203
IC6001(52))
PIN
P4202
63
INPUT SELECT 1
11
11
(FROM
D4201
PIN
P4201
IC6001(53))
INPUT SELECT 2
3
3
R4202
NOT USED
VCO
1/4
1/2
75µs
DE-
EMPHASIS
dBX NOISE
REDUCTION
b
L CH
PIN
P4202
9
14
14
MATRIX
PIN
P4202
11
12
12
R CH
c
ALC
(NOISE REDUCTION)
DETECTOR
LEVEL
WEIGHTING
PB
SENSOR
REC
ALC
20KHz
REC
REC
EMPHA I
LPF
CCA
EMPHA II
DE-
PB
EMPHA I
PB
DE-
EMPHA II
REC
Hi-Fi
47
46
PB
NORMAL
NORMAL
PB
45
44
Hi-Fi
REC
DE-
MIX
EMPHA II
PB
DE-
PB
EMPHA I
CCA
EMPHA II
20KHz
EMPHA I
REC
ALC
REC
LEVEL
REC
WEIGHTING
PB
SENSOR
ALC
(NOISE REDUCTION)
DETECTOR
Hi-Fi(H)
/NORMAL(L)
AUDIO MUTE(H)
1
61
49
IC4501
NOT USED
(WITH MIX)
AUDIO
1
GND
20
L CH IN
R4205
R4204
AUDIO
2
1/2 VCC
19
R CH IN
AUDIO
3
FILTER
18
L CH OUT
4
17
V.REG
AUDIO
5
FILTER
16
R CH OUT
R4514
R4513
+5V
6
SET
GND
15
R4512
R CH
MODE SELECT
P4201
7
14
RETURN
STEREO(M)/OFF(L)
9
SPATIALIZER
P4201
+14V
13
8
GND
CONTROL(H/L/OFF)
8
L CH
12
9
VCC
RETURN
10
11
IC4351
TIMING
TIMING
ROOT
12
COMPRESSOR
ROOT
3
COMPRESSOR
TP4205
C
L CH
P4203
PIN
FM
LPF
19
MODULATOR
24
24
R CH
30
D
REC
(FROM IC6001(37))
TP4206
HOLD LPF FM
11
12
VIDEO DELAY
DEMODULATOR
REC(H)
PB
ENV
DETECTOR
DOC
DETECTOR
F
P4203
PIN
28
21
21
(FROM IC6001(39))
1.3MHz
Hi-Fi AUDIO
BPF
HEAD SW
E
P4202
PIN
22
18
18
PB
1.7MHz
BPF
37
36
REC
FM
HOLD LPF
DEMODULATOR
FM
LPF
MODULATOR
WAVEFORM OF Hi-Fi AUDIO/MTS/SAP STAGE
VIDEO
EE(H)
24
20
No
WAVEFORM
(TO IC6001(46))
A
P4203
PIN
PB Hi-Fi AUDIO(H)
22
22
(FROM IC6001(11))
P4202
PIN
VIDEO EE(H)
+5V
19
19
D
0.39Vp-p
P4203
PIN
(FROM IC6001(49))
Hi-Fi(H)/NORMAL(L)
25
25
P4201
PIN
(FROM IC6001(5))
AUDIO MUTE(H)
5
5
G
(WITH SPATIALIZER)
NOT USED
PIN
9
0.27Vp-p
a
PIN
(FROM IC6001(51))
8
SPATIALIZER CONTROL
(H/L/OFF)
(WITH LEVELMETER)
TP4351
NOT USED
(TO MAIN)
P4204
PIN
5
LEVEL METER
33
33
DATA
TP4352
(FROM
P4204
PIN
6
IC6001(27))
34
34
OSD-CS(L)
A/D
CLOCK
TP4353
CONVERTER
CONTROLLER
NOTE: Please use blank brackets to note additional information.
(FROM MAIN)
P4204
PIN
9
LEVEL METER
32
32
SCK
Hi-Fi AUDIO HEAD AMP CIRCUIT
IC4401
P3001
P3501
10
REC AGC
9
9
AGC
LPF
DET
REC AMP
SWITCH
P3001
P3501
12
10
10
CONTROL
15
PB-ON
REC-ON
1
24
+5V
L
TP4401
TP4403
P3001
P3501
R
3
23
11
11
TP4402
REC-ON
P3503
PRE
TP4405
18
AMP
Hi-Fi AUDIO
3
TP4404
L
HEAD L CH
P3001
P3501
P3503
5
BUFFER
Hi-Fi AUDIO
8
8
2
R
HEAD R CH
P3503
PRE
20
AMP
1
NOTE
No
WAVEFORM
NOTE
No
WAVEFORM
NOTE
REC
REC
REC
0.21Vp-p
B
0.21Vp-p
C
0.39Vp-p
L-CH
0.9Vp-p
REC
P.B
HEAD
E
F
5Vp-p
SW
R-CH
REC/P.B
REC/P.B
H
REC/P.B
I
1.77Vp-p
1.77Vp-p
1.77Vp-p
MTS
b
b
L-CH
0.3Vp-p
0.15Vp-p
(300Hz)
MTS
SAP
L-CH
(300Hz)
(300Hz)
c
c
0.15Vp-p

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