Analog Board (Pcb2) - Panasonic KX-FT907BX-B Service Manual

KX-FT907BX-B / KX-FT907BX-W

17.2. ANALOG BOARD (PCB2)

+2V
Immunity countermeasure part
+24V
CN1
+24V 1
AG 2
+5V 3
AG
PAPER 4
LINETX 5
TONE1 6
RLY 7
CPC 8
JAM 9
P_SHORT 10
BELL 11
HOOK 12
L1
LINERX 13
0
MONRX 14
H/STX_MUTE 15
H/SRX 16
PEPAR SW
NO PAPER: 5V
PAPER: 0V
HOOK SW
ON-HOOK: 5V
OFF-HOOK: 0V
AG
+2.0V
R2 10K
C7
Z0.1u IC3
R5
C4
0
50V4.7u
+12V
D1
4.7V
L3
0
AG
C9
+5V
L2
0
+5V +5V
R6 R12
4.7K 4.7K
SW1
R7
R3
1
2
3
100 100
4
C5
C2
K0.01u
K0.01u
AG AG AG
+5V
+2.0V
R4
4.7K
SW2
R1
4 3
1 2
100
C1
K0.01u
AG
AG
R10
+24VA
150K
L7
C8
0
J100p
C17
R13 75K
K0.022u L9
-1 8 2
1 C13
NC
0
3
4
R18 75K
C21 K0.022u
L4
C27
L8
0 NC
0
AG
R11
120K
R14 C28
( )
1.6K
NC
NC
R15
C18
R23
C14
2.2M
NC 5.1K
K3300p
R24
C19
AG
K0.056u
120K
C24 J27p
R25 470K
C11
R16
C22 6
K0.039u 33K
NC
5
IC3
R22
C12 R17 C26
39K
K0.1u 82K K0.022u
JAM SW
NO PAPER: 5V
PAPER: 0V
Q2
SW3
1
2
3
4
AG
+5V +24VA
AG
Q1
L6 0
+12V
AG
L5
0
C25
Z0.1u
AG
AG
176
R33
+5V R31
( ) ( )
NC NC
PC1
( C A )
NC
E K
( )
C30
( )
R27
Q4
NC
NC
NC
AG
( )
4
D2
5.6V
6
R28
C31
220 1/4W
5
D3
5.6V
4
R29
0
AG
BELL DETECT
5V
0V
C29
7
FAX TX
-2
R32
6.8K
R30 8.2K
Q3
Q6
(
R34
1K
+24V
R26
10K
R35
15K
D15
NC
AG
(1)
R39
(2)
( )
NC
(3)
NC
T2
(4)
3
2
1
(5)
T1
1
2
3
(6)
(7)
( )
Q5
NC
AG
(8)
(9)
+12V
(10)
(11)
(12)
2V
L10
(13)
0
NC
)
AG
R40
(14)
0
(15)