Panasonic NV-SV120EC, Service Manual

Page: 114 / 139

8.5. LUMINANCE & CHROMINANCE/ AUDIO SECTION IN MAIN SCHEMATIC DIAGRAM
A
B
C
D
E
F
G
1 2 3 4 5 6 7 8 9
H
R :TO POWER SUPPLY/RF SECTION
:TO SYSTEM CONTROL & SERVO SECTION S
:TO Hi-Fi AUDIO SECTION A
D :TO DECODER SECTION
10
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIAGRAM IS PLAYBACK MODE
WITH PAL COLOUR SIGNAL.(SP MODE) NOTE:THE MEASUREMENT MODE OF THE DC VLOLTAGE IN THE BRACKETS( )ON THIS DIAGRAM IS RECORD MODE
WITH PAL COLOUR SIGNAL.(SP MODE)
C4023
10V47
C4024
0.022
CTL HEAD (+)
CTL HEAD (-) S
S
FULL ERASE OUT
FULL ERASE IN 1
2
P4001
(TO FULL ERASE HEAD)
C4022
1500P
3
T4001
EQQ7QF024P
2
C4021
0.022
1
4
6
R4017
3300
Q4005
2SD602A
2 GND
1 AUDIO ERASE IN
P4002
(TO A/C HEAD)
3 AUDIO HEAD (R)
4 AUDIO HEAD (W)
5 CTL HEAD (-)
6 CTL HEAD (+)
C4020
220P R4014
16K
:TO INPUT/OUTPUT SECTION I
2
1
3
4
5
6
7
8
P5001
(TO CYLINDER UNIT)
9
10
B1
B2
B4
B5
B6
S PAL EP
S D.A.REC
D
A
A TUNER AUDIO (N)
AUDIO IN (N)
AUDIO OUT (N)
QR4002
UN2111
VIDEO MAIN SIGNAL PATH IN REC MODE
VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE
AUDIO MAIN SIGNAL PATH IN REC MODE
AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE
A AUDIO HEAD COM
A AUDIO HEAD L
AUDIO HEAD R A
LP/EP R
LP/EP COM
LP/EP L
SP R
SP COM
SP L
GND(HA)
AUDIO HEAD L
AUDIO HEAD COM
AUDIO HEAD R
B3
R4015
4700
R4016
2200
Q4003
2SD1149
Q4004
2SD601A
(OSC)
(PB:ON)
(PB:ON)
L4002
68u
BIAS 5V R
R
GND
GND (SYS)
R
R
GND (A)
GND (HA)
R
R
GND (V)
GND (NA)
R
R4020
4700 C4026
16V10 R4019
6800 C4025
10V22
R4018
4700
Q4006
2SB710A
(ERASE HEAD
DRIVE)
QR4005
UN2212
S BIAS
PS 5V R
VIDEO 5V R
C3071
0.1
C4001
6V100
R4001
3300
QR4001
UN2211
C4003
4700P
R4002
100K
C4004
1200P R4003
22K
C4008
25V3.3 LB4001
J0JBC0000070
B7
B8
B9
MESECAM DET
TRACKING ENV. S
S
MUTE S A3
A2
A1
C4013
0.01 C4014
6V47
R4008
330K
C4011
8200P
R4007
10K
C4009
6V22
LB4002
0
R4004
220
C5006
6V47 C5005
0.1
L5001
68u
L4001
0
C4005
6V22
LB4003
J0JBC0000070
C4012
50V4.7
C3027
50V1
C5007
0.1
R3015
3300
R3017
1K
Q3001
2SD601A
(AMP)
IC3001
HA118425SF
R4009
33K R4011
24K R4012
820 R4010
10K
C4016
0.1 C4017
16V10 C4018
50V1 C4019
16V10
R4013
100
B7 B8 B9
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
1 2 3 4 5 6 7
80 79 78 77 76 75 74
A10 A3 A7 A2 A1 A6 A5
C3028
50V4.7 R3011
100 R3009
15K R3010
10K
B6
B5
B4
B3
B2
B1
C5004
0.01
C5003
0.01
C5002
0.01
C5001
0.01
DET DET
COLOR
LEVEL
DETECTOR
ENVDET HPF
COME
TANK
CR DET
MESECAM
DET
BAND
GAP
FH
TRAP
REC
EQ
DET
VCA
REC
MUTE
EXT
INT
SP
SP
CH2
CH1
P
R
B-Y
INVERT
SP2
SP1
SP2
SP1
VCA
CH2
CH1
SP ON
PREAMP
REC ON
EP ON
R
P
R4006
22K C4006
25V4.7
INT EXT
SP2
SP1
SP2
SP1
5.3
5.3
(4.4)
0.3
(4.9)
5.3
(0)
0
(4.8)
0
0
5.0
0
(4.8)
5.3
(0)
0
0
(-15.9)
0.7
(-24.5)
0.7
(-24.0)
5.0
1.5
2.2
4.9
0
1.3
(3.3)
5.2
2.4
2.4
2.4
2.3
(0)
2.3
(0)
2.3
(0)
5.2
0.5
2.5
2.5
2.5
0
2.6
2.6
0 0 0 5.2 2.1 2.6 2.8
2.5 0 0 2.8 2.3 2.7 2.8
0.3
(4.6)
0.3
(-0.8)
TW3001
C3042
1
LB4004
0
H
H
(BIAS :ON) H
(D.A.REC :OFF) H
(PAL EP :ON) H
H
H
H
NV-SV120EB/EC/EP
LUMINANCE & CHROMINANCE/AUDIO SECTION SCHEMATIC DIAGRAM
LB5004
0
LB5003
0
50