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8.6.
Hi-Fi AUDIO SECTION IN MAIN SCHEMATIC DIAGRAM
R
:TO POWER SUPPLY/RF SECTION
S
:TO SYSTEM CONTROL & SERVO SECTION
V
:TO LUMINANCE & CHROMINANCE/AUDIO SECTION
I
:TO INPUT/OUTPUT SECTION
D
:TO DECODER SECTION
G
S
MUTE
H
S
SYS IIC CLOCK
S
SYS IIC DATA
V
FSC
F
I
AV2 A OUT (R)
I
AV2 A OUT (L)
I
AV1 A OUT (R)
E
I
AV1 A OUT (L)
R
PS 5V
R
PS 12V
R
GND
D
V
AUDIO IN (N)
V
AUDIO OUT (N)
C
R
RFC AUDIO OUT
S
RFC MUTE
H
B
D
TUNER AUDIO (R)
I
AV1 A IN (R)
I
AV2 A IN (R)
D
TUNER AUDIO (L)
I
AV1 A IN (L)
I
AV2 A IN (L)
V
AUDIO HEAD COM
V
AUDIO HEAD R
V
AUDIO HEAD L
S
A.HEAD SW
S
ABS NORMAL
S
D.FM REC
H
A
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE IN THE BRACKETS( )ON THIS DIAGRAM IS RECORD MODE
WITH PAL COLOUR SIGNAL.(SP MODE)
1
A3
A2
A1
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
H
B11
B12
2
AUDIO MAIN SIGNAL PATH IN REC MODE
A4
L4502
1.2u
QR4501
UN2113
(BUFFER)
0
-0.3
QR4503
XN0121600L
(MUTE)
0
2
-0.3
3
4
5
-0.3
1
0
R4533
220
R4531
220
R4535
220
QR4504
XN0121600L
(MUTE)
C4544
0
100P
2
-0.3
3
4
5
-0.3
C4545
100P
1
0
R4538
220
L4503
10u
C4539
C4534
R4543
0.1
16V47
220
R4537
10K
R4540
22K
QR4502
0
UN2113
QR4507
(BUFFER)
0
-0.4
UN2216
(MUTE)
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIA
WITH PAL COLOUR SIGNAL.(SP MODE)
3
4
C4525
C6526
6V100
0.1
2.5
2.5
48
47
0.2
49
0.5
50
C4530
16V10
6.0
SWITCH
51
RCH
C4531
16V10
6.0
SWITCH
52
LCH
C4532
16V10
6.0
53
0
54
55
GND
0
56
C4533
16V10
6.0
57
12.3
58
VCC2
C4535
16V10
6.0
59
DET
C4536
16V22
0.7
60
2.4
NORMAL
61
OUTPUT
SWITCH
C4538
0.1
2.4
62
R4539
3600
0
63
0
64
IC4501
1
2
AN3656NFBPBV
2.3
0
C4540
0.1
5
AUDIO MAIN SIGNAL PAT
A1
A2
C4529
16V10
4.7
1.5
3.2
2
46
45
44
43
I
I
OUTPUT
SELECT
SWITCH
RCH
+
OUTPUT
SELECT
SWITCH
LCH
3
4
5
6
2.3
0
0
C4541
0.1
6
48
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