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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
T :TO TIMER SECTION
G
A
AV2 A IN (L)
A
AV2 A IN (R)
A
AV2 A OUT (L)
A
AV2 A OUT (R)
S
AV1 PB
H
A
AV1 A IN (L)
A
AV1 A IN (R)
A
AV1 A OUT (L)
A
AV1 A OUT (R)
R
TUNER VIDEO
F
R
RFC VIDEO OUT
S
AV2 PB
H
E
R
PS 12V
R
PS 5V
D
C
S
VIDEO OUT
V
VIDEO IN
S
PROG
H
B
S
IO IIC DATA
S
IO IIC CLOCK
A
R
GND
R
GND (AV)
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
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
L4902
33u
C4958
0.1
L4903
33u
C4957
6V330
IC4902
LA73023V
B1
B2
B3
2
3
VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE
A15
12.4
Q4905
0
2SD601A
(AV2 PB:ON)
-0.2
2.7
R4917
R4916
D4903
22K
470
MA165
R4918
R4919
15K
470K
C4920
0.1
C4918
C4910
0.01
0.1
0
4.8
2.0
2.7
1.9
44
43
42
41
40
C MUTE
C MUTE
CPN C
FUNC
V IN3
CTL1
CTL2
IN1
SW P1
INTER-
CLAMP
FACE
IIC BUS
INTERFACE
POWER
SAVE
CPN C
Y DC
IN3
CTL
DATA
CLOCK
CTL
1
2
3
4
5
2.8
2.9
2.0
R4923
R4924
LB4911
680
680
0
C4927
0.01
B4
B5
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIAGRAM IS PLAYBA
WITH PAL COLOUR SIGNAL.(SP MODE)
4
A16
A17
A18
R4914
22K
0
QR4901
UN2215
(SWITCHING)
0
R4915
18K
C4919
R4922
C4917
0.1
4700
0.1
0
1.9
0.1
2.3
4.8
39
38
37
36
35
34
FUNC
CPS
EXT
V IN2
VCC
SW P2
IN1
CTL5
CLAMP
CLAMP
VIDEO OUTPUT
SELECT SW
(AV2)
MUTE
MUTE
CPS/Y
INPUT
SELECT
SW
CLAMP
CLAMP
CPS
Y DC
CPN C
ADR
CPS
IN3
ADJ
IN1
IN1
CTL
GND
6
7
8
9
10
11
2.8
2.0
2.8
C4928
C4929
C4930
0.1
0.01
0.1
R4935
0
B1
5
AUDIO
A19
C4924
0.1
2.2
2.2
33
32
31
V OUT
V OUT
GND
AV2
AV1
VIDEO OUTPUT
SELECT SW
(AV1)
CPS/Y OU
SELECT S
SUPERIM
MUTE
MUTE
MUTE
CPN C
INPUT
VIDEO I
SELECT
SELECT
SW
CPN C
CPN Y
OUT
OUT
12
13
14
2.0
B2
6
49
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