Read Panasonic WV-CL920 / WV-CL924 Service Manual online
– 22 –
SCHEMATIC DIAGRAM OF I/F BOARD (2/2)
5
6
3
4
1
2
13
12
11
10
9
8
14
7
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
1
2
3
4
5
6
7
2
3
4
5
6
7
8
9
14
13
12
11
10
13
12
11
10
9
8
11
10
13
12
5
6
3
4
1
2
14
7
1
3
6
VCC
5
4
GND
1
IN
3
GND
2
OUT
+5V
1
3
6
VCC
5
4
GND
1
3
6
5
4
C39
C50
C47
C41
C53
C52
C51
C46
104
R70
R71
R72
R95
R94
R92
R93
R68
R67
C43
R69
IC12
IC12
IC12
IC12
IC12
IC12
IC12
C44
C45
R73
CN8
L9
C55
R74
R76
R77
R75
CF4
C54
IC6
IC7
IC7
IC7
IC7
IC7
IC7
IC11
IC9
IC13
C49
C48
C42
IC8
IC10
SD
RD
ACTS
GND
RSGND
TXDET
GND
RS+6.2V
(2/6)
IC7
(1/6)
(1/6)
(6/6)
(5/6)
(4/6)
(6/6)
(4/6)
(5/6)
(2/6)
(1/6)
(3/6)
VCC
GND
BEADS
1
2
R
D
VCC
C40
GND
GND
A1
CX1/RX1
RST1
RST1
B1
Q1
Q1
VCC
GND
Q1
GND
A2
CX2/RX2
RST2
B2
Q2
Q2
Q2
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RD
SD
ACTS
C37
C38
C58
C57
C33
C34
C36
R62
R89
R88
R66
R91
R90
R63
R65
R64
R61
CF3
BEADS
CF2
BEADS
CF6
BEADS
CF5
BEADS
1
2
3
4
5
2
3
4
5
CN7
TX(B)
TX(A)
TX(A)
RX(A)
RX(B)
GND
VS2
VS4
VS5
VS3
1
2
1
2
1
2
1
2
VS1
Hi-Z
2-LINE(TX(B))
4-LINE(RX(B))
4-LINE(TX(A))
2-LINE(RX(A))
D
AT
A
TERM
+5V
TO
MAIN
BOARD
CN403
MAIN
BOARD
CN403
MONOSTABLE
MULTIVIBRATOR
VOLTAGE DETECTOR
[RS-485] OPEN
LINE
DRIVER/
RECEIVER
PHOTO-
COUPLER
FROM
I/F
BOARD
(1/2)
I/F
BOARD
(1/2)
(Page 21)
I/F BOARD (2/2)
A
1
B
C
D
2
3
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