Panasonic PV-4601 A, Руководство по обслуживанию

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