Analog Board (Pcb2) - Panasonic KX-FT981LA-B Service Manual

KX-FT981LA-B / KX-FT987LA-B

17.3. Analog Board (PCB2)

+5VA +5V
+2.5V
AG AG AG
TO DIGITAL
+5V
CN101
1 +5V
2 AG
3 RLY
4 HOOK
AG
5 LINERX
6 LINETX
7 HSRX
8 HSTX
9 BELL/CPC
10 PAPER
11 JAM
12 R161 NC
DCN
R162 NC
MONRX
R163 NC
PSHORT/ACK_EN
JJ109
+5VA
0
R149
NC
8
C142
VCC
GND
NC
4
FG2 AG
AG
+2.5VL +2.5V
L104
NC
HOOK SENSOR SW
SW102
AG
(PULL UP AT DIGITAL)
Q108
NC
R158 D113
IC101
NC NC
C104 560p
R106 33k
R109
16k C108
2
100n
R110 C109
1
3
16k 100n
IC101
AG
R107 33k R112
5.6k
R108
C105 560p
R111 C110
270k
5.1k 4.7n
C107
5.6n
AG
PAPER SENSOR SW JAM SENSOR SW
1 3 1
2 4 2
AG
SW101 SW103
(PULL UP AT DIGITAL) (PULL UP AT DIGITAL)
164
+5V +5V
PC104
PC101
NC
NC
4 1 4 1
3 2
3 2
C
E
AG
NC
Q107
AG
T101
4
6
R113
AG
NC
C111
39n
+5V
AG
4
3
AG
PC102
R118
43k
Q101
NC
AG
C116
100n
C114 R119
NC NC
4
3
AG
(1)
NC
Q103
B
(2)
(3)
(4)
3
(5)
2
1
(6)
(7)
(8)
1
2
(9)
(10)
(11)
(12)
(13)
(14)
(15)
Q102
NC
AG