3.2. SCHEMATIC DIAGRAM (Changed from original section 19 SCHEMATIC
DIAGRAM)
Q7
JP29
TP3
47
R46
RING
5.1V
D2
R1
3.3M
33
R9
100K
R18
82K
R7
RI+
R4
3.9K
TP1
C21
0.01
VDD
0.01ZF
C38
1.8M
R3
C16
500V680P
0
R53
Q1
C20
16V10
330K
R8
R19
1.5K
C1
250V1
330K
R14
47K
R28
TP2
SA1
300V
C17
500V680P
S1
S1-1
3
1
2
Q2
JP3
10V
D13
RI_
C15
16V10
2.2K
R20
R24
180
SP_
R51
100
6.3V100
C1
1
VR2
C26
50V1
MC_
MC+
R52
100
R21
1.8K
JACK3
(HS_JACK)
1
MC+
2
SP-
3
SP+
4
MC-
R22
1.8K
R25
100K
R23
1K
Q3
VSS
VR1
SP+
TP4
TP5
TP6
JACK1
1
R
2
T
R29
NC
C29
16V10
0.1
C31
JJ1
JJ2
JJ3
JJ4
C12
0.068
C13
0.068
C23
NC
C27
NC
NC
C18
NC
C19
Q8
S
D
G
R55
1M
NC
R54
1
2
D23
D22
NC
D17
2
1
4
3
JJ5
JJ7
JJ6
JJ8
JJ9
S3
1
4
3
2
R103 10K
R101
22K
R102
330
R105
NC
C103
K0.056
6.8K
(1/2W)
R2
1
L
2
GND
3
45
OUT
6
7
8
L
Ringer
1
Red+
2
Black-
S1-2
6
4
5
R104 NC
POS1
D24
C102
50V10
OFF
OFF
High
Low
ON
OFF
ON
3
TIP
RINGER CIRCUIT
IC2
(10)
(12)
(11)
(9)
(5)
(4)
(3)
(2)
(1)
(8)
(7)
(6)
Vol+
M2
AUTO
1
8
7
2
Program
6
9
M4
#
M3
*
Vol-
Flash
4
Pause
0
CN1
1
C 4
2
C 3
3
C 2
4
C 1
5
R 4
6
R 3
7
R 2
8
R 1
9 Flash
10 row5
11 row7
12 row8
5
Redial
3
KEY PAD
7
KX-TS550LXB / KX-TS550LXW
