Schematic Diagram (Switching Power Supply) - Panasonic KX-FT21RS Serivce Manual

9.3.

SCHEMATIC DIAGRAM (SWITCHING POWER SUPPLY)

TH101
D102 D101
D103 D104
D109
R105
0.22/(2W)
C102 0.1
R102 82K
R123 220
C103 C104
2200p 2200p
C121
4700p
L101
ZNR101
750V
R101
1M 1/(2W)
C101
GND
0.22
L N
CN31
12V
Cycle=13 s m
0V
D105
D
G
S
Q101
R103 82K
R122 390
R133
150K
4 5
R125
D108
D107 10K
3 6
IC101
2 7
1 8
R127 C124
1.8K 0.1
20V
PC101
36V
540V
Cycle=13 s m
0V
T101
TRANS
D201
C202
1000p/(1KV)
R108 D202
15
11V
Cycle=13 s m
0V
19V
149
1
2
3
R223 C205
4
100 1/(50V)
5
IC201
6
7
8
IC202
25V
m
Cycle=13 s
0V
0V
48V
KX-FT21RS
CN301
24V
24V
24V
GND
GND
GND
5V
GND