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j
KX-Fi200
KX-Fi20u
j
SCHEMATIC
DIAGRAM(SWITCHING
POWER SUPPLY)
I
5
I
6
I
7
I
8
I
10
11
12
A
B
C
E
F
G
H
o101
Cl13
t--
0.047
Z102
Z104
L102
_IIF
O102
C103
L101
___IIF
R101 1M
L ,
1
' N
GND
CN31
TH101
C 104
:R102
120K
220P
D106
R103
R104
120K
10
R105 0.33
Rl13
0.33
R106
470
4
5 I
Rl12
Rl14
180
CONTROLJ
100
C107 220P
IC101
I
2
7t
R_0107
C1()8
__56°pT
,I
t'T !
2.2K
0.047
270V
0V_Cycle=5
# s
D105
D104
C112.
35V 33 _
Rlll
15
20V
-30V
Cycle=5#
s
2V
r_-lV
Cycle=10,u
s
Note:
When measuring the waveform on the primary circuit of the Switch Power Supply Board, be sure
to insulate the ground of the oscilloscope's probe from the ground of its power supply.
- 163 -
D201
11
I
_01
f
C201
L 35V 1000
D210 z
R201
R202
2.2K
18K
VR201
5K
R213 C202
100
0.1
IC201
R203
2.2K
30V
-f_
L-or
-50V
Cycle=5#
s
T201
TRANS
R206
56K
Q203
L-__40V
Cycle==10/1 s
0V
Q202
R204
C203
330
0.047
R212
3.9K
D211
D206
:2 v .....
/
o._?
D202
R210
680
3.3K
D207
C208
10V 1001+
777
G()
I
I
+12V
-12V
©
-12V
Cycle=10#
s
-12V
- 164-
CN301
5
24VH
--
4
GND
_-
3
GND
2!
GND
1
+5V
CN302
110 i P-ON
I
!
q
9
GND
I
i
I 8
24VM
I
i
--4 7
GND
I
i
6
GND
I
i
15
+12V
--4 4
GND
--t
3
+5V
2
+5V
4-4
1
-12V
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