Panasonic NV-FJ623EC, Service Manual

Page: 89 / 152

8.6. Hi-Fi AUDIO SECTION IN MAIN SCHEMATIC DIAGRAM
:TO LUMINANCE & CHROMINANCE/AUDIO SECTION
:TO SYSTEM CONTROL & SERVO SECTION
1 2 3 4 5 6 7
A
B
C
D
E
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE IN THE BRACKETS( )ON THIS DIAGRAM IS RECORD MODE
WITH PAL COLOUR SIGNAL.(SP MODE)
:TO POWER SUPPLY/RF SECTION
8 9
:TO INPUT/OUTPUT SECTION
F
G
ABS NORMAL S
10
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIAGRAM IS PLAYBACK MODE
WITH PAL COLOUR SIGNAL.(SP MODE)
A.HEAD SW S
AUDIO HEAD L V
AUDIO HEAD R V
AUDIO HEAD COM V
AUDIO IN2 (L) I
AUDIO IN1 (L) I
TUNER AUDIO (L) R
AUDIO IN2 (R) I
AUDIO IN1 (R) I
TUNER AUDIO (R) R
AUDIO MUTE S
RFC AUDIO OUT R
AUDIO OUT (N) V
AUDIO IN (N) V
PS 12V R
GND R
GND (N) R
C4537
0.01 C4538
16V47
FM MUTE V
I AUDIO OUT1 (L)
AUDIO OUT1 (R) I
AUDIO OUT2 (L) I
AUDIO OUT2 (R) I
FSC V
SYS IIC DATA S
SYS IIC CLOCK S
MUTE S A4
A3
A2
A1
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
QR4505
UN2113
QR4506
UN2216
R4527
4700
C4534
10V22
C4536
0.1
C4535
0
C4533
16V10 R4528
390
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
IC4501
AN3656NFBPBV
L4501
0
VCC2
C4532
16V10
R4535
220
QR4501
UN2216
QR4502
UN2216
QR4504
UN2216
QR4503
UN2216
R4536
220
R4531
220
R4529
220
C4531
16V10
C4530
16V10
C4529
16V10
GND
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
A1 A2 A3 A4
R4537
0 C4528
16V10 R4524
1K R4525
1K R4522
30K R4538
1K C4521
16V10 C4520
16V22
SWITCH
RCH
SWITCH
LCH
OUTPUT
SELECT
SWITCH
RCH
+
DET
NORMAL
OUTPUT
SWITCH
OUTPUT
SELECT
SWITCH
LCH
VREF
INPUT SWITCH RCH INPUT SWITCH LCH
GND (L)
AGC &
SWITCH
FM
MODULATOR/
DEMODULATOR
LPF
PNR
LCH
AGC +
GND
PREAMP
&
SWITCH
VCC
REC
DC2
ENV.DET
OUT
REC AGC
DET
PNR RCH
BPF
BPF
LPF
FM
MODULATOR/
DEMODULATOR
AGC &
SWITCH
MUTE CONTROL
REC AGC ADJ.
GND(R)
VCC
VCO- FO
IIC BUS
INTERFACE
C4540
0.1 C4541
0.1 C4501
16V10 C4502
16V10 C4503
16V10
R4510 10K R4517 22K
B1
R4511 5600
R4509 68K
B2
R4504 5600
R4503 68K
B3
R4513 10K R4518 22K
B4
R4514 5600
R4512 68K
B5
R4502 5600
R4501 68K
B6
R4515
4700
R4516
510
C4504
0.047
C4505
10V33
C4506
16V10
C4507
16V22
C4508
0.015
C4509
0.033
C4514
0.01
C4515
6V100
B7
B8
C4510
0.01
C4511
150P
B9
C4513
0.01
C4512
150P
C4516
0.1
B10
B11
R4519
820
C4518
0.22
C4519
0.015
R4520
120K
D4502
MA165
R4521
510
R4523
4700
C4522
0.047 C4523
10V33
AUDIO MAIN SIGNAL PATH IN REC MODE AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE
NOTE:DO NOT USE ANY PART NUMBER SHOWN ON THIS
SCHEMATIC DIAGRAM FOR ORDERING.WHEN YOU
ORDER A PART,PLEASE REFER TO PARTS LIST.
(BUFFER)
(MUTE)
(MUTE)
(MUTE)
(MUTE)
(MUTE)
TW4501
TW4502
2.5
2.4
(1.0)
1.7
(4.1)
1.8
(4.3)
0.1
(4.1)
2.4
(0)
0
(2.0)
4.9
0.7
(2.0)
2.0
0.7
(2.0)
0
(1.8)
0
(1.9)
2.5
2.5
0.3
(0.7)
3.2 4.2 4.3
5.8
4.9 0
5.8
1.7 0 2.4
0.3
(0.7)
2.5 4.7 2.5 2.5
5.8
0
0.5
0
5.8
12.3
6.0
0.7
2.4
2.4
0.2
2.3 0 2.3 0 0 2.4 2.0 0 0 0
0
2.0 0 0 0 2.4
-0.4
0
-0.4
0
-0.4
0
-0.4
0
-0.4
0
R4508
680
B12
TL4503
D.FM REC S B12
PS 5V R
L4502
1.2u
R
S
V
I
H
H
H
H
NV-FJ623EC/ECN
Hi-Fi AUDIO SECTION SCHEMATIC DIAGRAM
38