Panasonic PVD4735S - DVD/VCR DECK, Service Manual

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(AUDIO SIGNAL PROCESS)
AUDIO CONTROL / ERASE
HEAD UNIT
AUDIO
HEAD
R
P
BIAS OSC
T4101, Q4104
AUDIO
ERASE
HEAD
FULL
ERASE
HEAD
FULL ERASE HEAD
REC
EQ
VCA AGC
DET
Q4102
Q4103
96
98
IC3001
6
P4002
4
P4002
3
P4002
2
P4002
1
P4092
4
P4092
3
P4092
2
P4092
1
P4001
2
P4001
1
Q4101
+5V
MUTE
MUTE
fH
TRAP
9
48
1
14
10
61
53
59
57
14
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 IC6001-16)
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)
AUDIO
MUTE(H)
79 73 74
AUDIO
MUTE(H)
MTS/SAP
SIGNAL
PROCESS
SIF
AUDIO
UHF/VHF TUNER UNIT
RF
MAIN C.B.A.
FRONT JACK C.B.A.
CYLINDER UNIT
IC4201
(Hi-Fi AUDIO SIGNAL PROCESS)
AGC
DET
L
R
Hi-Fi AUDIO
L HEAD
Hi-Fi AUDIO
R HEAD
AGC
AMP REC
AMP
AUDIO
OUT2 R-CH
AUDIO
OUT2 L-CH
AUDIO
OUT1 R-CH
AUDIO
OUT1 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
(FROM Q4150-C) 1/4 OSC
8
P5002
9
P5002
7
P5002
P5001
15
P5001
13
DVD AUDIO
R-CH
DVD AUDIO
L-CH
TP4002
TP4207
FROM DVD II
BLOCK
DIAGRAM
J4103
NOT USED
(OUTPUT SELECT)
IC4301
(FROM IC6001-59)
DVD SELECT(H)
6
4
2
1
DVD
VCR
(OUTPUT SELECT)
IC4302
6
4
2
1
DVD
VCR
(FROM IC6001-25)
SW MUTE(H)
DRIVE
MUTE(H)
Q4202
(W/O DVD AUDIO PB)
(WITH DVD AUDIO PB)
J4301
J4302
2
P4591
7
P3002
7
P3002
5
AUDIO
IN 1 R-CH
AUDIO
IN 1 L-CH
P4591
5
15
Q4259
Q4258 Q4254
Q4257 Q4253
P5001
6
DRIVE
Q4201
Q4204
Q4203
+5V
AUDIO SIGNAL PATH BLOCK DIAGRAM
AUDIO SIGNAL PATH BLOCK DIAGRAM
PV-D4735S/PV-D4745/PV-D4745S/PV-D4745S-K
A
A
A
B
0.1Vp-p V1
50mV 0.5ms
PB
0.4Vp-p V1
0.2V 0.5ms
REC/PB
1.8Vp-p V1
0.5V
0.5ms
REC
0.2Vp-p V1
0.1V 0.5ms
REC
5.0Vp-p V1
2V
10ms
PB
2.2Vp-p V1
1V
0.5ms
REC/PB
0.4Vp-p V1
0.2V 0.5ms
REC
C
B
C
PV-D4735S / PV-D4745 / PV-D4745S / PV-D4745S-K
51