Panasonic NV-SJ420EG Service Manual page 54

VIDEO MAIN SIGNAL PATH IN REC MODE
R :TO POWER SUPPLY/RF SECTION
S :TO SYSTEM CONTROL & SERVO SECTION
H
I :TO INPUT/OUTPUT SECTION
T :TO TIMER SECTION
P4003
G
(TO A/C HEAD)
AUDIO ERASE IN 1
GND 2
A.HEAD (R) 3
A.HEAD (W) 4
CTL HEAD (-) 5
CTL HEAD (+) 6
F
S CTL HEAD (+)
S CTL HEAD (-)
S SHORT DET L
S BIAS L
S FULL ERASE H
E
P4002
(TO FULL ERASE HEAD)
FULL ERASE GND 1
FULL ERASE IN 2
S HEAD SW A1
D
S H.AMP SW A2
S ENV. SELECT A3
S TRACKING ENV. A4
S D.REC H A5
S CURR. EMPH H A6
I TUNER AUDIO A7
I R AUDIO OUT A9
S MUTE H A10
I AUDIO IN A11
C
P3502
(TO CYLINDER UNIT)
LP R 1 A15
LP COM 2 A16
LP L 3 A17
SP R 4 A18
SP COM 5 A19
SP L 6 A20
GND 7
8
9
10
B
S D.A.REC H
S PAL EP H
A
R BIAS 5V
R VIDEO 5V
R GND
1 2
VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE
T4002
EQQ7QF026P
R4030 C4032
10K 220P
3 4
0.4
2
(4.7)
R4029
0.3
C4031 Q4006
3300
(-0.6)
0.15
1 6 2SD602A
(OSC)
C4029
4700P
L4003
68u
C4030 C4028
6V220 0.022
0.4
(4.9)
5.0
Q4005
(4.1)
2SB710
(AUDIO ERASE DRIVE)
R4028 C4026 R4027
2700 10V22 3300
5.0
R4026 C4027
4700 16V10
T4001
EQQ7QF025P
3 4
2 0.3
(4.8)
R4025
0.3
C4025 Q4004
6800
(-1.1)
0.022
1 6 2SD602A
(OSC)
C4023
2200P
C4022
0.022
L4002
68u
0.3
(5.0)
5.1
Q4003
(4.2)
C4024
2SB710
6V47
(FULL ERASE
R4024 C4021 R4023
DRIVE)
4700 10V22 6800
5.0
5.1
(0)
D4001
0
QR4006 MA165
(4.8)
MUN2212
(FULL ERASE H :ON)
0(3.6)
R4009 0.7
Q4001
2200
(-23.1)
2SD601A
5.0(-23.0)
(PB:ON)
0
QR4003
(4.9)
UN2111
0
(D.A.REC
R4013 (-14.9)
H :OFF)
22K
R4010
0.7
5.0
2200 Q4002
(-23.1)
2SD601A
(PB:ON)
3 4
AUDIO MAIN SIGNAL PATH IN REC MODE
IC3501
AN3368SB
TW2001
2.4 HEAD SW
A1 1
A2
0 HEAD AMP SW
C3002 C3003
2
1000P 1000P
0
(2.7)
A19 3 +
C3506 LB3501
0.7
0.1 VLP0147
(2.9)
A20 4 HA4
-
H
5 GND
L
-
C3507 LB3502 0.7
0.1 VLP0147 (2.9)
A18 6 HA3
C3508 LB3503
0.7
0.1 VLP0147
(2.4)
A17 7 HA2
-
L
8 GND
H
-
C3509 LB3504
0.7
0.1 VLP0147
(2.4)
A15 9 HA1
0
(2.5)
+
A16 10
0
11
0
12 NC
0
13 NC
0
14 NC
0
15 NC
0
16 NC
0
17 NC
0
18 NC
0.2(15.0)
QR4009
0
UN2215
(PAL EP H :ON)
0.3
QR4008
0
UN2215
(PAL EP H :ON)
C4033
100P
R4001
1K
5 6 7
AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE
5.0
VCC 36
0
NC 35
DET
4.9
CMP 34 A3
DET
C3503
0.8
0.01
(3.4)
33
0
LP H 32
L
1.4
ZAP 31
H
R3501
2.4
L 100
(0)
30
H
CHROMA
AMP
GND 29
2.7
(1.9)
AT 28
3.9
(2.2)
27 A4
C3505
0.01
0
NC 26
0
(4.9)
REC H 25 A5
0
NC 24
0
CURR.EMPH
23 A6
0
NC 22
0
NC 21
0
NC 20
0
NC 19
0
QR4001
0
UN2212
(PAL EP H :ON)
C4001
2200P
A7
8 9
L3501
33u
C3501 C3502
6V47 0.01
B1
TW3030
C3510 R3506
0.1 330
B2
TW3001
B3
C3511
0.1
R3503
680
R3504
270
QR4005
UN2113
-0.4
(BUFFER) 0
(-0.1)
R4022
560
0
-0.4
QR4004
(-0.1)
UN2215
(MUTE)
R4011 C4010
470 0.027
0
QR4002
0
UN2211
(PAL EP H :ON)
C4009
1
A9 A10 A11
10 11 12