Panasonic KX-TG2238CS, Service Manual

Page: 3 / 6

KX-TG2238CS: SCHEMATIC DIAGRAM (BASE UNIT) Main
3.3 V
Charge
Circuit
3.3 V
3.3 V
Reset
Circuit
3.6 V
3.6 V
6-8V
3.3 V
Bell Detect Circuit
Call ID Data
Output
Line input
1.1kHz,
-25dBm/600
Ω
CN1
1 LA
2 LB
3 9V
4 GND
33uH
L1
33uH
L2
22
POS1
SA1
D4
4
3 2
1
680p C18
680p C19
10M
R23
Q4
1 3
2
100K
R20
10K
R21
10K R18
Q3 1.0M
R24 C14
K0.01
47K
R13
C9
Z0.01
R12
Q2
C7
R9
Q1
R57
0
C60
1K
R55
K0.1
C58
C53
R11
K680P/50V C11
K680P/50V C12
100K
R30
100K
R31
K0.15
C16
K0.15
C17
Q6
D3
K0.68
C15
4.7K
R26
NC
R28
IC331
3.6V
2 1
3 4
C110
Z0.1 Z0.1
C106
27K
R112
330K
R109
D101
6.3V330u
C103
Q151
R160
56K
10K
R159
C151
220(1/2W)
R157
15
R153
Z0.1
C150
330
R151
R150 100K
6.3V100u
C101
390K R14
390K R15
390K
R224
R222
33K
C244
K0.1
C242
K2700P
R223
2.2K
R221
Z0.1
C100
D202
6.3V220u
C239
Z0.01
C238
R17 47K
L200
SA2
22V
D152
22V
D153
CHGP
CHGM
DCM
R218
12K
R219
10K
Z0.1
C241
C54
R217
390K
R110
R227
2.2K
D204
D108
C115
D109
R113
LA
LB
390K
R52
NC
C51
NC
C52
NC
C56
NC
C10
NC
C243
NC
C499
C113
R8
0
1K
R10
R220
100
R51
47
Q50
R70
3.9K
NC
R16
Q150
1
3
2
120P
C245
D150
C705
6.3V220u
C415
C250
K0.047
NC
L202
Z0.1
C402
3.3u
L3
DCP
390
R152
NC
C246
C20
C13
1000P
VCC1
1.2K
R215
20V
D2
12
NC
R22
CN101
1
VCC
2
GND
3
STB1
4
STB2
5
STB3
6
STB4
7
STB5
8
KIN6
9
KIN5
10
KIN4
11
KIN3
12
KIN2
13
KIN1
14
VCC
15
ANSLED
16
VMLED
17
SPLED
18
INUSELED
R105
100K
10M
R25
R27 3.3M
R29
C21
K0.01
NC
D105
D205
NC
D203
IC100
3.6V
2
3
4 1
IC101
3.3V
2
3
4 1
16V100u
C114
12
R154
12
R155
12
R156
NC
R101
D103
D102
C107
NC
TP_LCT
D5
1
2
0
R108
IC332
2.7V
5
IN
4
OUT
3
NC
2
GND
1
DS
C8
50V1u
39K
R7 K0.01 C6
C4
100P
C5
NC R6
33(1/2W)
R5
2.0V
D1
C55
1000P
680 R2
1.2K R1
K0.047
C3
16V10u
C1
R3 47
6.8u
L151
6.8u
L150
16V100u
C112
NC
D107
0 R19
R114
NC
NC Q108
1
3
2
NC
C249
C111
K0.1
27K
R161
KIN1 KIN2 KIN3 KIN4 KIN5 KIN6
STB5 STB4 STB3 STB2
STB1
ANSLED
SPLED
INUSELED
VMLED
(1)
(8)
(12)
(7)
(6)
(5)
(4)
(3)
(2)
(13)
(14)
(15)
~
(22)
(21)
(16)
(20)
~