Panasonic KX-TS820MXB Service Manual page 19

(1)
J6
(2)
NC
D105
Q107
L103
R118
C111
R120
(3)
56
1000p
15k
(4)
(5)
J3
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
VDD
(14)
(15)
(16)
1 Vref 24
KEYIN0
(17)
2 23
MODE KEYIN1
(18) 3 22
RESET KEYIN2
4 21
(19) P4_7/XOUT(/XCOUT)
KEYIN3
5 20
VSS/AVSS
(20) KEYIN4
6 19
P4_6/XIN(/XCIN) VOL1
(21)
7 18
VCC/AVCC VOL2
(22)
8 17
PULSEMUTE VOL3
(23)
TP80 TP94
TP93
J5
(24)
(25)
J9
(26)
(27) J2
(28)
SW2
NC
6
1
2
5
R10 12k
TP11
RINGER 3
R11 NC
4
1
+
R9
2
-
7
5
0
TP12
C 4
1
2
3
Q3
R5
6
SW3
10k
PULSE MUTE
R110
0
R109
Q105
NC
NC
Q104
NC
D103
Q106
NC
Q103
NC
PULSE MUTE
PULSE
D130
R131
47k
TP95
TP96
TP87
TP98
TP99
J1
19
Q2
R8
100K
JP1
TP5
Q101
5
4
6
2
TP4
1
3
TP21
Q102
R103
NC
68K
JP101
GND
HOOK DETECT
Q140
Q130
TP86
1
TP84
2
TP83
3
TP82
4
5
6
7
8
9
10
11
_
CN1
Ringer
Handset Receiving
Handset Sending
KX-TS820MX SCHEMATIC DIAGRAM (Main)
KX-TS820MXB/KX-TS820MXW
C1
1u
250
TP6
LED AT SMALL PCB
TP10
For ME AC Impedance
R102 R101
1.8M
C101 3.3M
680p
TP1
L101 TP3 TP2
1 2
POS101
4 3
D101
SA02-FOR SA
CN & SG ONLY
C102
L102
680p
RING DETECT
Q1
NC: No Components
JJ1 _
T
R
_