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8.5.
LUMINANCE & CHROMINANCE/ AUDIO SECTION IN MAIN SCHEMATIC DIAGRA
P :TO POWER TRANSFORMER SECTION
R :TO POWER SUPPLY/RF SECTION
S :TO SYSTEM CONTROL & SERVO SECTION
A
:TO Hi-Fi AUDIO SECTION
H
D :TO DECODER SECTION
R
AV 12V
G
S
VIDEO OUT
R
RFC VIDEO OUT
S
IIC CLOCK
S
IIC DATA
S
FM MUTE
H
S
HEAD SW
S
MESECAM
H
S
TRACKING ENV.
A
AUDIO OUT (L)
F
A
AUDIO OUT (R)
A
AUDIO IN (R)
A
AUDIO IN (L)
P4002
(TO A/C HEAD)
AUDIO ERASE IN
1
GND
2
AUDIO HEAD (R)
3
AUDIO HEAD (W)
4
CTL HEAD (-)
5
E
CTL HEAD (+)
6
S
CTL HEAD (+)
S
CTL HEAD (-)
P4001
(TO FULL ERASE HEAD)
FULL ERASE IN
1
FULL ERASE OUT
2
D
P
UNREG 6V
R
GND
P5001
(TO CYLINDER UNIT)
LP/EP R
1
LP/EP COM
2
LP/EP L
3
SP R
4
C
SP COM
5
SP L
6
AUDIO HEAD L
7
AUDIO HEAD COM
8
AUDIO HEAD R
9
A
AUDIO HEAD R
A
AUDIO HEAD COM
A
AUDIO HEAD L
B
S
BIAS
H
S
PAL 9H
H
S
D.A.REC
H
R
D
TUNER AUDIO (N)
A
AUDIO IN (N)
A
AUDIO OUT (N)
A
R
TUNER 5V
R
VIDEO 5V
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE IN THE BRACKETS( )ON THIS DIAGRAM IS RECORD MODE
WITH PAL COLOUR.(SP MODE)
1
VIDEO MAIN SIGNAL PATH IN REC MODE
L3304
68µ
C3049
C3050
0.1
16V47
2.4
R3023
Q3202
270
1.7
2SB709A
A8
A7
A6
A5
A4
A3
A2
A1
R4081
12K
B1
B2
B3
B4
B5
B6
B7
B8
B9
2
3
JK3201
K2HA612B0045
(REAR JACK)
AUDIO
AUDIO
VIDEO
IN (R)
IN (L)
IN
R3022
1
2
3
680
TL4506
TL4505
(AMP)
C3051
6V470
R4074
0
C4076
470P
LB4079
R4073
0
0
C4075
470P
T4081
EQQ7QF024Q
C4082
470P
3
4
2
C4081
0.022
1
6
C4084
1800P
5.3
R4086
2200
5.3
Q4084
(4.4)
2SB710A
(ERASE HEAD
R4087
DRIVE)
2200
0.3
5.3
(4.9)
(0)
L4081
0
QR4082
470µ
(4.8)
UN2213
(BIAS
H
:ON)
C4066
2200P
0
QR4061
0
UN2211
(PAL 9H
H
:ON)
5.0
R4084
0
0.7
QR4081
1K
(4.8)
(-24.5)
UN2111
(D.A.REC
H
:OFF)
5.3
(0)
R4085
0.7
1K
(-24.0)
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BR
WITH PAL COLOUR SIGNAL.(SP MODE)
4
VIDEO MAIN SIGNAL PATH IN
AUDIO
AUDIO
V
OUT (R)
OUT (L)
O
4
5
6
7
TL3003
TL4504
TL4
R3039
75
R3212
75
0.3
(4.6)
R4082
0.3
3300
Q4081
(-0.8)
2SD602
(OSC)
R4088
0
C4085
0.022
C4083
6V47
0
Q4082
2SD1149
(PB:ON)
0
(-15.9)
Q4083
2SD601A
(PB:ON)
5
36
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