Read Panasonic WV-BP140 Service Manual online
TO
VIDEO
BOARD
(2/2)
(Page 14)
TO
VIDEO
BOARD
(2/2)
(Page 14)
DC-DC BOOSTER
VIDEO OUTPUT
VIDEO
OUT
OUT
ELC
DRIVER
ALC
AMP.
IRIS
CONTROLLER
ALC VIDEO
MIX/OUTPUT
VR1
V
V
SUB
TO
SENSOR
BOARD
(2/2)
CN1
SENSOR
BOARD
(2/2)
CN1
VR2
ALC LEVEL
ALC LEVEL
VR3
PEDESTAL
PEDESTAL
VR4
VIDEO
OUTPUT
VIDEO
OUTPUT
VR5
ELC LEVEL
ELC LEVEL
VREF GENERATOR/
COMPARATOR
CN4
VIDEO
OUTPUT
CONNECTOR
VIDEO
OUTPUT
CONNECTOR
<Index>
IC5 A3
IC6 B4
IC6 B4
Q6 B2
Q7 D3
Q8 D3
Q9 D5
Q10 D4
Q11 A2
Q12 A2
Q13 A6
Q7 D3
Q8 D3
Q9 D5
Q10 D4
Q11 A2
Q12 A2
Q13 A6
D1 D3
D2 C3
D3 C2
D5 D2
D2 C3
D3 C2
D5 D2
VIDEO
BOARD
(1/2)
BOARD
(1/2)
LL-PULSE,VP-DET,VD,
ALC/ELC,A/B CONT,PCO
ALC/ELC,A/B CONT,PCO
LL-PULSE,VP-DET,VD,
ALC/ELC,A/B CONT,PCO
ALC/ELC,A/B CONT,PCO
VIDEO,ALC(B),DC,
DAMPER,VREF,ELC(B),
VD2
DAMPER,VREF,ELC(B),
VD2
+5V
+10V
C42
1
C38
OPEN
C37
1
C36
1
Q12
D1
D2
R79
1K
R78
ALC (HD)
ALC (B)
VIDEO
DC
DAMPER
VREF
Y
IRIS
CSYNC
SUB-BIAS
FL
AGC CONT
PED (VR)
AGC (VR)
ELC (VR)
ELC (B)
R65
0
R102
(TP4)
(IRIS
SIG)
SIG)
(TP3)
OPEN
100
6
5
4
1
2
3
Q8
6
5
4
1
2
3
Q11
6
5
4
1
2
3
Q13
6
5
4
1
2
3
Q10
6
5
4
1
2
3
C30
0.1
C40
R74
3.9K
R77
3K
R75 3.9K
R72
3.3K
1
R70
4.7K
R71
3.3K
C29
1
R80
300
R82
0
C14
VR1
50K
R27
R23
R29
1.5K
2.4K
C15
OPEN
36K
R28
1K
0.1
C16
0.1
R24
330
R26
R35
1K
R31
1.8K
R39
150K
R43
1K
VR2
10K
C19
C20
0.1
2200P
R41
2.2K
R45
2.2K
R46
R48
3.6K
30K
R52 120K
R57
5.1K
R59
3K
R95
R60
OPEN
OPEN
C27
0.1
R85
R84
3K
3K
R96
OPEN
R63 1K
R62 8.2K
R61 2K
C26
0.1
R64 10K
R53 22K
R54
20K
R56
OPEN
VR3 10K
VR4 10K
VR5 10K
R50
2K
R51 12K
C24
C25
0.1
10/10
C23 0.1
R55
100K
R88
OPEN
R58
0
R47
2K
C22
0.1
R44
10K
C21
0.047
R32
2K
R37
8.2K
R30
10K
1K
R36
33K
R33
OPEN
C18
0.1
R34
390
C17
0.1
R25
Q6
4.7K
R81
D5
D3
D4 OPEN
0
C33
4.7/35
C35
OPEN
C41
1
C34
1
C31
0.1
R83
10
C32
Q7
0.22
C39
10/25
+5V
+15V
+10V
Q9
R68
VD2
3.9K
C28
470/10
R69
1K
R66
10
R67
62
R76
2.2K
R73
15K
-9V
+5V
+15V
-9V
CN3
GND
A/B CONT
GND
CSYNC
GND
ALC (HD)
+15V
GND
PCO
GND
Y
GND
GND
GND
PED (VR)
AGC (VR)
ELC (VR)
AGC CONT
GND
FL
GND
SUB-BIAS
ALC/ELC
IRIS
VD
-9V
VP-DET
LL-PULSE
A/B CONT
CSYNC
ALC (HD)
PCO
Y
PED (VR)
AGC (VR)
ELC (VR)
AGC CONT
FL
SUB-BIAS
ALC/ELC
IRIS
VD
VP-DET
LL-PULSE
GND
+5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
+
-
+
-
+
-
+
-
CN4
(TP1)
R38
R40
100K
150K
R42
15K
1
1
2
2
8
8
3
3
4
4
AOUT
A-IN
A+IN
GND
A-IN
A+IN
GND
V
BOUT
B-IN
B+IN
7
7
6
6
5
5
IC6
IC5
+
+
-
-
8.8
9.2
9.8
6.7
1.5
2.2
2.2
2.8
10.0
0
-4.0
8.8
9.8
3.0
0.5
10.0
10.0
9.3
1.9
2.5
2.5
2.5
2.5
5.0
1.8
1.2
1.8
1.2
5.0
0.9
1.5
5.0
1.5
2.0
1.4
2.0
0
1.8
1.8
1.8
1.8
1.8
0
5.0
1.7
1.8
1.8
1.7
1.8
1.8
1.8
1.8
1.8
0
5.0
2.4
1.6
1.6
5.0
3.6
4.1
3.4
4.1
0
10
µ
s/DIV, 1V/DIV
10
µ
s/DIV, 0.1V/DIV
10
µ
s/DIV, 0.5V/DIV
1
2
3
4
5
6
A
B
C
D
VIDEO BOARD(1/2)
– 13 –
SCHEMATIC DIAGRAM OF VIDEO BOARD (1/2)
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