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8.7.
INPUT/ OUTPUT SECTION IN MAIN SCHEMATIC DIAGRAM
R
:TO POWER SUPPLY/RF SECTION
S
:TO SYSTEM CONTROL & SERVO SECTION
V
:TO LUMINANCE & CHROMINANCE/AUDIO SECTION
A
:TO Hi-Fi AUDIO SECTION
G
R
PS 12V
R
PS 5V
R
N.SW 5V
S
AV2 PB 12V
A
AUDIO IN2 (R)
A
AUDIO IN2 (L)
A
AUDIO OUT2 (L)
A
AUDIO OUT2 (R)
F
A
AUDIO IN1 (R)
A
AUDIO IN1 (L)
A
AUDIO OUT1 (L)
A
AUDIO OUT1 (R)
S
PROJ. 50
S
AV1 PB 12V
S
AV1 PB
H
R
RFC VIDEO OUT
S
VIDEO OUT
E
D
C
S
SLEEP
H
S
OSD IIC DATA
S
OSD IIC CLOCK
B
R
TUNER VIDEO
V
VIDEO IN
H
S
PROG.
A
R
GND
R
GND (A)
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE IN THE BRACKETS(
WITH PAL COLOUR SIGNAL.(SP MODE)
1
VIDEO MAIN SIGNAL PATH IN REC MODE
A14
R4905
22K
R4904
A13
15K
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
C4916
A1
0.1
2.2
36
35
GND
CLAMP
C
IC4901
LA73021M
SERIAL
CONTROL
IIC BUS
INTERFACE
POWER
SAVE
1
2
0
4.8
R4938
220
B1
B2
B3
B6
)ON THIS DIAGRAM IS RECORD MODE
2
3
VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE
A15
A16
L4903
68u
C4925
C4926
0.1
6V220
L4902
68u
C4920
C4921
0.1
6V220
R4915
470
D4903
MA165
11.3
2.2
(0)
0
0
0
34
33
32
31
30
FSS
OUT
6dB
SW1
A
B
CLAMP
EXT
EXT
V REF
CTL 4
CTL 2
GND
3
4
5
6
7
4.8
0
0
2.3
(0.3)
(0.3)
C4937
C4929
0.1
0.1
B7
B1
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIAG
WITH PAL COLOUR SIGNAL.(SP MODE)
4
A17
A18
A1
R4928
0
0.6
C4919
0.1
1.8
5.2
2.1
29
28
27
26
25
GND
N.SW
5V
6dB
CLAMP
SW3
D
A
C
B
CLAMP
RIPPLE
FLT
12V
8
9
10
11
12
6.2
0
10.9
1.8
12.3
C4930
C4942
0.1
0.1
R4942
0
C4941
0.1
5
A2
A3
R4947
100
R4926
100
1.3
Q4904
2SB709A
(AMP)
C4923
0.1
0
1.8
0
24
23
22
CLAMP
EXT
CTL 3
GND
13
14
15
0
0
6
39
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