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8.5.
LUMINANCE & CHROMINANCE/ AUDIO SECTION IN MAIN SCHEMATIC DIAGRA
R
:TO POWER SUPPLY/RF SECTION
S :TO SYSTEM CONTROL & SERVO SECTION
H
A :TO Hi-Fi AUDIO SECTION
R
PS 5V
S
PAL EP
H
S
D.A REC
H
S
ET REC
H
S
MUTE
H
A
AUDIO OUT (N)
G
A
AUDIO IN (N)
R
TUNER AUDIO (N)
S
TRACKING ENV.
S
HEAD SW
P5001
(TO CYLINDER UNIT)
LP/EP R
1
LP/EP COM
2
LP/EP L
3
SP R
4
SP COM
5
SP L
6
F
GND (HA)
7
AUDIO HEAD L
8
AUDIO HEAD COM
9
AUDIO HEAD R
10
A
AUDIO HEAD R
A
AUDIO HEAD COM
A
AUDIO HEAD L
S
BIAS
L
P4002
(TO A/C HEAD)
AUDIO ERASE IN
1
E
GND (NA)
2
A.HEAD (R)
3
A.HEAD (W)
4
CTL HEAD (-)
5
CTL HEAD (+)
6
S
CTL HEAD (+)
S
CTL HEAD (-)
S
SHORT DET
L
S
FULL ERASE
H
S
V.EE
L
P4003
(TO FULL ERASE HEAD)
D
FULL ERASE GND
1
FULL ERASE IN
2
R
BIAS 5V
S
S-VHS
H
C
A
GND (A)
R
GND
R
GND (HA)
B
R
GND (HA2)
R
GND (SYS)
S
LP
H
A
NOTE:THE MEASUREMENT MODE OF THE DC VLOLTAGE IN THE BRACKETS( )ON THIS DIAGRAM IS RECORD MODE
WITH PAL COLOUR SIGNAL.(SP MODE)
1
VIDEO MAIN SIGNAL PATH IN REC MODE
A1
R4081
C4018
7500
220P
A2
A3
A4
A5
A6
A7
C4019
0.15
C4021
4700P
A8
A9
A10
A11
A12
A13
R4087
C4023
4700
10V22
A14
C4029
0.022
C4027
2200P
A15
R4090
4700
C4025
R4089
10V22
6800
LB4005
J0JBC0000070
2
3
T4002
EQQ7QF026P
3
4
2
R4082
0.4
3300
(-0.7)
1
6
L4002
68u
C4020
C4022
10V47
0.022
0.3
(4.8)
5.0
Q4001
(4.3)
2SB710A
(BIAS
L
:ON)
R4086
6800
5.1
R4088
C4024
4700
16V10
T4001
EQQ7QF025P
3
4
2
R4091
0.3
6800
(-1.1)
1
6
C4026
0.022
L4003
68u
C4028
6V47
0.3
(5.1)
5.1
Q4005
(4.2)
2SB710A
(FULL ERASE
DRIVE)
5.1
5.0
QR3005
4.8
UN2113
(VHS:ON)
0
QR3003
UN2213
(VHS:ON)
1.2
R3005
L3002
3300
82u
4.8
QR3007
(0)
UN2211
4.8
(PB:ON)
QR3006
UN2113
0.1
(PB:ON)
(4.9)
4.7
(0.2)
R3512
1K
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIAGRAM IS PLAYBACK
WITH PAL COLOUR SIGNAL.(SP MODE)
4
VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE
A16
5.1
C4017
0
QR4005
100P
(4.9)
UN2111
(D.A.REC
:OFF)
H
5.2
(-22.6)
0.4
0
(4.5)
(0.8)
R4084
Q4002
Q4003
4700
1.3
2SD602A
2SD1149
0.7
(OSC)
(PB:ON)
(-22.8)
0
(-13.7)
R4085
Q4004
2200
2SD601A
0.7
(PB:ON)
(-22.8)
0.3
(4.8)
Q4006
2SD602A
(OSC)
R3054
0
R3055
560
B1
B2
5
A17
QR4003
XN1215
(PAL EP
H
:ON)
2
0
3
1.2
4
0
5
1
IC3502
M52065FP
C3517
0.1
5.0
Q3007
2.9
2SD601A
(AMP)
2.2
C3058
150P
R3
L3013
R3053
0
180u
56
C3057
47P
B4
6
42
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