Panasonic NV-MV20EG Service Manual page 138

R :TO POWER SUPPLY/RF SECTION
VIDEO MAIN SIGNAL PATH IN REC MODE
S :TO SYSTEM CONTROL & SERVO SECTION
VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE
I :TO INPUT/OUTPUT SECTION
H
AUDIO MAIN SIGNAL PATH IN REC MODE
AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE
G
S SYS IIC DATA A5
S MUTE H A4
S HEAD SW A3
S MESECAM DET H A2
S TRACKING ENV. A1
S FSC
P4002
(TO A/C HEAD)
AUDIO ERASE IN 1
GND 2
AUDIO HEAD (R) 3
AUDIO HEAD (W) 4
CTL HEAD (-) 5
F
CTL HEAD (+) 6
S CTL HEAD (+)
S CTL HEAD (-)
P4001
(TO FULL ERASE HEAD)
FULL ERASE OUT 1
FULL ERASE IN 2
E
R BIAS 5V
R GND
LB4004
R GND (SYS) 0
R GND (A)
R GND (HA)
R GND (V)
R GND (NA)
S BIAS H
D
R I AUDIO OUT
S RFC MUTE H
P5001
C
(TO CYLINDER UNIT)
SP R 1 B1
SP COM 2 B2
SP L 3 B3
4
5 B4
B
S PAL EP H
S D.A.REC H
R TUNER AUDIO B7
I AUDIO IN B8
A
R PS 5V
I VIDEO 5V
NOTE:THE MEASUREMENT MODE OF THE DC VLOLTAGE IN THE BRACKETS( )ON THIS DIAGRAM IS RECORD MODE
WITH PAL COLOUR SIGNAL.
1 2
T4001
EQQ7QF024P
R4014 C4020
16K 220P
3 4
2
C4021
R4017
0.022
0.3
3300
(-0.8)
1 6
C4022
1500P
C4024
0.022
R4020 C4026 R4019 C4025 5.3 C4023
4700 16V10 6800 10V22 10V47
Q4006
5.3
(4.4)
2SB710A
(ERASE HEAD
R4018 DRIVE)
4700
0.3
5.3
(4.9)
(0)
L4002
0
QR4005 68u
(4.8)
UN2212
(BIAS H :ON)
QR4502
0
UN2113
(BUFFER) QR4507
0 -0.4
UN2216
(MUTE)
C4008
25V3.3
C4003 R4003 C4004
4700P 22K 1200P
0
R4001
R4002
3300 QR4001
0 100K
UN2211
(PAL EP H :ON)
C4001
6V100
R4006
22K
C3071
0.1
5.0
0
R4015
0.7
0
QR4002 4700 Q4003
(-24.5)
(4.8)
UN2111 2SD114900L
(D.A.REC H :OFF) (PB:ON)
5.3 0
(0) (-15.9)
L4501
R4016
0
0.7
Q4004
2200
(-24.0)
2SD601A
(PB:ON)
C4516
0.1
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIAGRAM IS PLAYBACK MODE
WITH PAL COLOUR SIGNAL.
3 4 5
A6 A1 A2
C3042 5.0
1
Q3001
2.2
2SD601A
(AMP)
1.5
C3027
50V1
R3017
1K
C5007
1.3
0.1
(3.3)
L5001
68u
C5005 C5006
LB5004
0.1 6V47 C5004
VLP0147
0.01
B3
0.3
(4.6)
K5003
Q4005
VLP0147
2SD602A B2
(OSC)
C5003 LB5003
VLP0147
0.01
B1
B4
C5008
0.01
C5009
0.01
R4008 C4012
330K 50V4.7
C4011
8200P
R4007
LB4003
10K
J0JBC0000070
C4009
LB4001
6V22
J0JBC0000070
LB4002
0
R4004
220
C4006
25V4.7
C4005
6V22
IC3001
HA118425F
L4001
0
C4013 C4014
0.01 6V47
B9
NV-MV20EG/EB/EBL,MV15EG/EP
LUMINANCE & CHROMINANCE/AUDIO SECTION SCHEMATIC DIAGRAM
6 7
A3 A4 A5
TW3001
R3009 R3010 C3028 R3011
15K 10K 50V4.7 100
2.5 0 0 2.8 2.3 2.7 2.8
80 79 78 77 76 75 74
B-Y
INVERT
4.9 CR DET
81 TANK
COME
MESECAM
0
82 DET
COLOR
R
DET DET
LEVEL
DETECTOR
83
P
5.2
84 ENVDET HPF
2.4
85
2.4 SP2
86
CH2
SP2
REC
MUTE
2.4 CH1
87
SP1
88
SP1 VCA
EXT
0
89
2.3 INT
(0) SP2
90
SP
SP2
CH2
0
91
SP
CH1
SP1
EXT INT
5.2
92
SP1
0.5
93
2.5
FH
94
TRAP
SP ON
PREAMP
2.5
95
R P
REC ON
2.5
96
EP ON
0
97
VCA
DET
2.6
REC
98
EQ
99
2.6
100
BAND
GAP
1 2 3 4 5 6 7
0 0 0 5.2 2.1 2.6 2.8
C4016 C4017 C4018 C4019
0.1 16V10 50V1 16V10
R4013
100
R4009 R4011 R4012 R4010
33K 24K 0 620
B7 B8 B9
8 9 10