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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
T
:TO TIMER SECTION
S
MAIN IIC CLOCK
S
MAIN IIC DATA
V
FSC
G
S
MUTE
H
PP3901
GND (AV)
1
GND (AV)
2
GND (AV)
3
PP3902
RFC VIDEO OUT
1
GND (AV)
2
AV1 A IN (R)
3
AV2 A IN (R)
4
GND (AV)
5
AV1 A IN (L)
6
AV2 A IN (L)
7
GND (AV)
8
AV1 A OUT (L)
9
F
AV1 A OUT (R)
10
GND (AV)
11
AV2 A OUT (R)
12
AV2 A OUT (L)
13
AV1 PB 12V
14
E
PP3904
AV3 C IN
1
PS 12V
2
AV3 VIDEO IN
3
4
TUNER VIDEO IN
5
GND (AV)
6
OSD IIC DATA
7
OSD IIC CLOCK
8
GND (AV)
9
VV C OUT
10
GND (AV)
11
12
PS 5V
13
D
Y/C C OUT
14
OSD PULSE
15
PROG
H
16
PP3905
Y/C Y OUT
1
GND (AV)
2
VIDEO/Y IN
3
GND (AV)
4
AV2/AV3 C IN
5
GND (AV)
6
7
GND (AV)
8
AV3 Y IN
9
C
GND (AV)
10
OSD VIDEO OUT
11
H
AV2 PB
12
PROJECT 50
13
S-VHS SW
L
14
PP3906
DNR SW
1
IR
2
N.SW 5V
3
AV3 A IN (R)
4
GND (AV)
5
SCT SW
6
POWER SW
7
GND (AV)
8
B
AV3 VIDEO IN
9
GND (FIP)
10
AV3 A IN (L)
11
AV3 C IN
12
GND (AV)
13
AV3 Y IN
14
AV3 S-VHS IN
L
15
S
RFC MUTE
H
A
R
PS 5V
R
N.SW 5V
R
PS 12V
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE IN THE BRACKETS( )ON THIS DIAGRAM IS RECORD MODE
WITH PAL COLOUR SIGNAL.(SP MODE)
1
VIDEO MAIN SIGNAL PATH IN REC MODE
VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE
A4
A3
A2
A1
B1
B2
B3
B4
B5
B6
B12
B13
B14
L4503
0
B15
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
TW3901
2
L4502
1.2u
C4526
QR4501
0.1
UN2113
-1.4
(BUFFER)
0
(-0.6)
R4533
220
QR4503
XN0121600L
(MUTE)
0
2
-1.4
(-0.6)
3
4
5
0
1
R4531
220
R4535
220
QR4504
C4544
XN0121600L
100P
(MUTE)
0
2
-1.4
(-0.6)
3
4
5
0
1
R4538
220
C4545
100P
C4539
C4534
0.1
16V47
R4537
R4543
10K
220
B35
B36
B37
QR4502
0
UN2113
-1.3
(BUFFER)
0
(-0.6)
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIAGRAM IS P
WITH PAL COLOUR SIGNAL.(SP MODE)
3
4
AUDIO MAIN SIGNAL PATH IN REC MODE
AUDIO MAIN SIGNAL PATH IN PLAYBACK MOD
C4525
6V100
2.5
48
R4530
100K
1.7
49
1.7
50
C4530
16V10
6.0
51
C4531
16V10
6.0
R4532
52
100K
C4532
16V10
6.0
53
R4534
100K
0
54
55
GND
0
56
C4533
16V10
6.0
57
R4536
100K
11.9
58
VCC2
C4535
16V10
6.1
59
DET
C4536
16V22
0.8
60
2.5
61
R4540
C4538
22K
0.1
2.4
62
R3539
3600
0
63
0
64
1
2.4
IC4501
AN3656NFBPBV
C4540
0.1
QR4507
UN2216
(MUTE)
5
A1
A2
C4529
R
16V10
1
2.5
4.8
1.6
3.3
2.6
47
46
45
44
43
IIC B
INTE
SWITCH
RCH
SWITCH
LCH
OUTPUT
SELECT
SWITCH
RCH
+
OUTPUT
SELECT
SWITCH
LCH
NORMAL
OUTPUT
SWITCH
2
3
4
5
6
0
2.4
0
0
2.5
C4541
C
0.1
1
B29
B32
6
44
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