Panasonic NV-SV120EG Service Manual page 57

VIDEO MAIN SIGNAL PATH IN REC MODE
PS3301
FSC 1
G
V MASK 2
SYS IIC DATA 3
SYS IIC CLOCK 4
PS 3.3V 5
L3301
C IN 6 A1 22u
DNR 5V 7
PB C 8 A2
GND 9
EMPHA OUT 10
GND 11
EMPHA IN 12 B1
GND 13
F
PS3302
HEAD SW 1 A3
2
3 A4
VIDEO OUT 4
GND 5
OSD VIDEO 6
GND 7
C OUT 8 A5
GND 9
Y OUT 10 A6
SECAM C 11 A7
E
SEPA C 12 B2
13 B3
REC Y 14 B4
SECAM YC 15 B5
SEPA Y 16 B6
CURR OUT 17 B7
PB Y 18 B8
R3308
10K
D
C
C3380
5P
R3349
3900
C3376
270P
B
L3302
22u
A
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE IN THE BRACKETS( )ON THIS DIAGRAM IS RECORD MODE
WITH PAL COLOUR SIGNAL.(SP MODE)
1 2
VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE
A5 A6
C3355
2.2
2.4 2.8 2.2
14 13 12
CMUTE YMUTE
15
2.3
16
OSD
C3366
2.2
2.8
17
OSD
FIL
OSD
VMUTE VFBC
2.3
18
ATT
19
TRAP
C3371 R3329
2.1
0.1 220
(3.1)
20
21
5.1
22
SUB-EMPHASIS
23
SVHS
2.5
24
NVHS +
-
25
REC
PB
C3390
REC
120P
2.5
26
REC PB
R3323 PB
R3335 R3324
1500
1K 0
PB
2.5
- +
-
27
+
C3391
EP
R3334
220P
560
REC
2.5 ATT
28
SP
R3339
3900
C3393
270P
29 30 31
2.5 3.7 2.5
C3372 R3318
2.2 1K
B1
THE MEASUREMENT MODE OF THE DC VOLTAGE OUT OF THE BRACKETS ON THIS DIAGRAM IS PLAYBACK MODE
WITH PAL COLOUR SIGNAL.(SP MODE)
3 4
A8 A9 A10 A11
(EB) R3315
39
C3383
R3313 R3314 C3344 R3316
0.01:EB
100 100 6V0.47 1K
6V0.47:EC/EP
5.1 2.8 2.9 0.3 2.9 3.4 5.1 2.8
11 10 9 8 7 6 5 4 3
VCC2
CL2 COMP CL2
OSD
ATT ATT
+6
YFBC
POSLPF1
OSD
FIL
OSD DIG
DIG
DIG
OSD
DIG OSD
DIG OSD
+
C MUTE
VCA
CK
PB*+1dB
REC
EXT
CONV
CONV
NC
PB
EXT
REC*ACC
REC*ACC
+PB
LIM1
-
+
LIM2
+
DC
-
BF CRADJ BG BF
32 33 34 35 36 37 38 39 40
2.5 3.6 5.1 2.4 2.7 2.8 2.8 3.0
C3347 C3360 C3362 C3345 C3343 C3342
2.2 6V47 0.1 50V4.7 0.01 16V10
C3374
270P
B6 B9 B2
5 6 7
A12
C3341 C3339 C3340
0.01 6V47 0.1
IC3305
C1AB00001760
5.1 0.3
2 1
POSLPF2
C3338
2.8 0.01
56 A7
PB REC
(EB)
4.4
55
2.6
PRE (0.4)
54
LPF2
DIG
DIG
4.4
(0)
53
PB
REC
C3336
0.01
+1dB 2.8
52
CH2-C
REC+
C3335
PB*0dB
0.01
2.8
CH1-C
51 A1
4.4
CONV CONV
50
C3334
0.01
2.8
49 A2
48
DIG OSD
2.1
PRE
47
LPF1
DIG OSD
0
46
C3333
0.1
3.1
GCL 45
PB
2.7
(2.3)
44
REC
2.3
43
SSEP ATT
41 42
1.6 2.4
(1.9)
B7 B8 B4
8 9
(EC/EP)
Q3322
2SB1218A
R3376
1500 (BUFFER)
1.5
0.8
R3375
R3374
1100
1K
5.1 1.6 0
3 2 1
VCC
IC3304
C1AB00001486
H L
GND
4 5 6
2.4 2.4
R3372 R3373
C3388 C3389
1M 1M
1 1
Q3321
2SB1218A
R3371
560 (BUFFER)
3.4
2.8
Q3320
2SB1218A
(INV.)
5.1 2.8
R3370
Q3319
120
2SD1819A
R3369
330 (BUFFER)
4.4
1.5
R3368
110
Q3318
2SB1218A
R3366
1500 (BUFFER)
2.1
1.5
R3367
1100
C3386
22P
C3387 L3309
C3385
12P 100u
22P
R3365
R3364
1K
560
2.8
Q3317
2.1
2SB1218A
(AMP)
B5 B10
NV-SV120EB/EC/EP
S-VHS PACK SCHEMATIC DIAGRAM
10 11