4-4
SCHEMATIC DIAGRAM OF POWER 1 BOARD FOR WV-CW370
TO
POWER
CABLE
(E11)
TO
POWER 2
BOARD
CN4
~
~
+
-
D4
C1
0.056
L2
1
4
3
2
R12
330k
1/4W
L3
33
33
D2
R2
82k
R4
47
R5
27k
R17
220
C6
15/400
C9
0.01
D7
C8
100p
C13
4700p
R21
12k
C10
0.1
R14
15k
CN1
1
3
F1
2A
250V
C16
220/35
R27
22k
IC1
1
Ref_pin
2
A
3
K
Q2
C5
1
R6
22
1/4W
C20
180/10
C3
1500p
C14
1500p
R3
6.8k
D9
D3
C12
680p
R19
2.2k
R11
22k
R20
47
C4
0.033
C7
100p
D11
R15
220
C19
0.1
R16
680
1/4W
R10
220k
C15
270/16
DGND
VS1
AGND
R25
3.3k
1
GND
2
LP/LPFO
3
LLDET/LPTI
4
5V
5
10.5V
6
24V
7
EXT BW/LED
8
GND[24V]
C2
1500p
D6
R9
220k
L1
1
2
4
3
D8
R1
82k
1/4W
1/4W
R26
10k
C18
1
R22
22k
C17
560/10
R23
3.3k
R8
220k
R18
47
R24
220
D10
L4
D5
T1
2
3
4
5
1
6
7
8
9
10
11
Q1
G
S
D
R13
470
TH1
2k
D12
C11
4700p
Q3
1
2
4
3
Q4
1
2
3
4
D1
1
2
3
4
E1
Important safety notice
Components identified by " " mark have special characteristics for safety.
When replacing any of these components, use only manufacture's specified parts.
AC (L)
AC (N)
POWER 1 BOARD
1
A
B
C
2
3
4
5
<INDEX>
IC1
A4
Q1
B2
Q2
A2,A3
Q3
B3
Q4
A3
POWER 1 BOARD
D1
C2
D2
A2
D3
A2
D4
B3
D5
C3
D6
B3
D7
A3
D8
A3
D9
C4
D10
C4
D11
C4
D12
B5