Panasonic DoubleFeature PV-D4734S, Service Manual

Page: 106 / 170

(AUDIO SIGNAL PROCESS)
AUDIO CONTROL / ERASE
HEAD UNIT
AUDIO
HEAD
R
P
BIAS OSC
T4101, Q4101
AUDIO
ERASE
HEAD
FULL
ERASE
HEAD
FULL ERASE HEAD
REC
EQ
VCA AGC
DET
Q4082
Q4083
2
96
98
IC3001
6
P4002
4
P4002
3
P4002
2
P4002
1
P4092
4
P4092
3
P4092
2
P4092
1
P4001
2
P4001
1
Q4081
+5V
MUTE
MUTE
fH
TRAP
9
48
3 1
1
14
10
61
53
59
57
14
15
3
1
36 62 42
43
27
30
22
24
21
28 56 45
29
R-CH Hi-Fi AUDIO
SIGNAL PROCESS
ENV
DETECTOR
L-CH Hi-Fi AUDIO
SIGNAL PROCESS
+
+
(TO IC6001-26) Hi-Fi PB(H)
(TO IC6001-10) MTS MODE
(TO IC6001-22) AUDIO DEFEAT(H)
(FROM IC6001-25)
SW MUTE(H)
(FROM IC6001-16)
NA PB SW ON(L)
Hi-Fi
Hi-Fi
NORMAL
NORMAL
(L-CH)
(L-CH)
(R-CH)
(R-CH)
TUNER
LINE1
LINE2
DVD
TUNER
LINE1
LINE2
DVD
I
2
C
CONTROL
(TO/FROM IC6001-72) IIC DATA
(FROM IC6001-71) IIC CLOCK
I
2
C
CONTROL
(FROM IC6001-19) Hi-Fi HEAD SW PULSE
(FROM IC6001-28) AUDIO MUTE(H)
DRIVE
Q4012
Q4304
AUDIO
MUTE(H)
79 73 74
AUDIO
MUTE(H)
AUDIO
IN1 R-CH
AUDIO
IN1 L-CH
AUDIO
OUT1 L-CH
AUDIO
OUT1 R-CH
MTS/SAP
SIGNAL
PROCESS
SIF
AUDIO
4.5MHz
BPF
FL4901
UHF/VHF TUNER UNIT
RF
MAIN C.B.A.
CYLINDER UNIT
IC4201
(Hi-Fi AUDIO SIGNAL PROCESS)
IC4303
(OP AMP) IC4304 (SW)
AGC
DET
L
R
Hi-Fi AUDIO
L HEAD
Hi-Fi AUDIO
R HEAD
AGC
AMP REC
AMP
Q4013 Q4014 Q4015 Q4016 Q4009
AUDIO
OUT2 R-CH
AUDIO
OUT2 L-CH
R
R
R
L
L
L
MUTE
MUTE
REC AUDIO SIGNAL PB AUDIO SIGNAL
AUDIO
IN 2 R-CH
AUDIO
IN 2 L-CH
MATRIX
MUTE
CONTROL
J4901
(FROM Q3005-E) 1/4 OSC
8
P3501
9
P3501
7
P3501
P5001
15
P5001
13
NOT USED
(FROM IC6001-59)
DVD SELECT(H)
J4202
J4201
DVD AUDIO
R-CH
DVD AUDIO
L-CH
TP4002
TP4207
D4210
IC4301
DVD
VCR
DVD
VCR
(L-CH)
(R-CH)
13
12
3
5
4
14
5
3
7
1
11
9
(OUTPUT SELECT)
IC4302
(OP.AMP)
AMP
(FROM IC6001-17)
DVD AUDIO SW(H)
DVD
VCR
DVD
VCR
AMP
3
13
1
7
3
5
10 9
2
15
4
11
AMP
AMP
FROM DVD II
BLOCK
DIAGRAM
R4243
R4244
NOT USED
J4103
NOT USED
NOT USED
Q4306
Q4304
FROM DVD II
BLOCK DIAGRAM
DIGITAL
AUDIO
P1002
11
DIGITAL
AUDIO OUT
(OPTICAL)
IC4801
JK4801
(OPTICAL
DRIVE)
3
1
J4801
6 2
NOT USED
(W/O
DVD AUDIO
PB)
(W/O DVD AUDIO PB)
(WITH DVD AUDIO PB)
J4301
J4302
AUDIO SIGNAL PATH BLOCK DIAGRAM
PV-D4734S/PV-D4744/PV-D4744S/PV-D4754S/PV-D4734S-K/PV-D4744S-K/PV-D4754S-K
AUDIO SIGNAL PATH BLOCK DIAGRAM
0.1Vp-p V1
50mV 0.5ms
A
A
240mVp-p V1
100mV 0.5ms
A
B
2.4Vp-p V1
1V 0.5ms
B
5.0Vp-p V1
2V 10ms
D
C
0.1Vp-p V1
50mV 0.5ms
1.8Vp-p V1
1V 0.5ms
D
C
5.72Vp-p V1
2V
0.2ms