Panasonic NV-VP23EC, Service Manual

Page: 202 / 207

NV-VP23EG/EC/EP
NV-VP28EG/EC
NV-VP33EG/EC/EB/EBL/EP
MAIN PCB AUDIO
BLOCK DIAGRAM
53
57
14
15
51
MUTE
QR4501
52 MUTE
AV2 L IN
AV2 L OUT
AV2 R IN
AV2 R OUT
8
13
62 6
2
79
61
VCA
P
R
1
98
96
A.HEAD(W)
A.HEAD(R)
FROM
AC HEAD
TO
AC HEAD
IC4501
IC3001
MAIN SIGNAL PATH IN REC MODE
MAIN SIGNAL PATH IN PLAYBACK MODE
9
10
INPUT
SELECT
SWITCH
RCH
INPUT
SELECT
SWITCH
LCH
SWITCH
RCH
SWITCH
LCH
OUTPUT
SELECT
SWITCH
RCH
OUTPUT
SELECT
SWITCH
LCH
PNR RCH
PNR LCH
NORMAL
SELECT
SWITCH
FM MODULATOR/
DEMODULATOR
AGC
&
SWITCH
LPF
AGC
+
BPF
BPF
LPF LPF
FM MODULATOR/
DEMODULATOR
AGC
&
SWITCH
2
4
3
1
AV1 R IN
AV2 R IN
AV1 L IN
AV2 L IN
IIC BUS
INTERFACE
42
43
IIC CLK S
IIC DATA S
PB60Hz
MUTE
P5001
P5001
P5001
8
9
L
R
Hi-Fi
AUDIO
HEAD
PREAMP
&
SWITCH
29
30
A_H_SW 27
FSC 45
TW4502
QR4505
H
H
(R)
JK4801
(L)
PP4801
PP4801
PS7501
PS7501
6
5
6
5
AV3 IN(R)
AV3 IN(L)
FRONT JACK PCB
(R)
JK4903
(L)
LINE OUT
1
3
2
6
JK4902
(R)
(L)
(R)
(L)
AV1 R OUT
AV1 L OUT
AV1 R IN
AV1 L IN
AV1
13
14
3
4
12
5
IC4502
9
10
11
FROM
QR4902- E
DVD
1
DVD L/R MIX
2
15
DVD R OUT
AV1 R OUT
DVD L OUT
AV1 L OUT
X0
Z0
1
3
2
6
AV2
Y0
43
2
1
NICAM
DECODER
IC7301
DEC R OUT
DEC L OUT
13 TUNER
TU7601
TUNER AUDIO OUT
(R)
JK4904
(L)
DVD OUT
AV2 R OUT
AV2 L OUT
AV2 R IN
AV2 L IN
P8003
P8003
P
S
4301
P
S
4301
16
18
16
18
FROM
DVD
AUDIO
BLOCK
DIAGRAM
AV
DECODER
PCB
AUDO R (OUT)
AUDIO L (OUT)
VHS MAIN PCB
I/O SECTION
(R)
(L)
(R)
(L)
H
2
3
3
5
3
2
P4002
P4002
4
3
PRE
AMP
REC
EQ
MUTE
MUTE
th
TRAP
MUTE
CTL
24
21
22
22
F
R
O
M
S
Y
S
C
O
N
F
R
O
M
S
Y
S
C
O
N
T
O
/
F
R
O
M
S
Y
S
C
O
N
F
R
O
M
S
Y
S
C
O
N
F
R
O
M
S
Y
S
C
O
N
X1
X
Z1
Z
Y
QR4503
7