Panasonic KX-TA1232 Service Manual page 227

IN COMING CALLER ID DATA
(FSK)
R301A
CN302 C301A
390K
470P
T1 3
R302A
C302A
R1 1
390K
470P
D309A
D310A
R309A
180K
3.58MHz
IN COMING CALLER ID DATA
(DTMF)
R301B
CN302 C301B
390K
470P
T2 2
C302B R302B
R2 4
470P 390K
D309B
D310B
R309B
180K
+5V
C301C R301C
CN302
470P 390K
T3 6
R302C
C302C
R3 8
470P 390K
D309C
D310C
R309C
180K
C301D R301D
CN302
390K
470P
T4 7
R302D
C302D
R4 5
470P
390K
D309D
D310D R309D
180K
+5V
+5V +5V
CALLER ID IC
IC301A
R303A 82K
1
IN+
2
IN-
R313A
R304A 82K
3
GS
1.5M
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8
TRIGout
R315A
9
MODE
10K
X301
10
OSCin
3.58M
11
OSCout
12
VSS
CALL ID IC
+5V
+5V +5V
CALLER ID IC
R303B
IC301B
82K
1
IN+
R304B
2
IN-
82K R313B
3
GS
1.5M
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8
TRIGout
R315B
9
MODE
10K
10
OSCin
11
OSCout
12
VSS
CALL ID IC
+5V +5V
CALLER ID IC
R303C
IC301C
82K
1
IN+
R304C
2
IN-
82K
R313C
3
GS
1.5M
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8
TRIGout
R315C
9
MODE
10K
10
OSCin
11
OSCout
12
VSS
CALL ID IC
+5V
+5V +5V
CALLER ID IC
IC301D
R303D
82K
1
IN+
R304D
2
IN-
82K
R313D
3
GS
1.5M
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8
TRIGout DATA
R315D
9
MODE DCLK
10K
10
OSCin FSKen
11
OSCout PWDN
12
VSS
CALL ID IC
+5V
C305A
0.047
24
VDD
23
St/GT
22
ESt
21 CALLSTDA
StD
R316A
20
INT
100K
19
CD
18
DR
17
DATA
16
DCLK
15
FSKen
14
PWDN
13
IC
CALLREVA
DTMF RECEIVER
+5V
C305B
0.047
24
VDD
23
St/GT
22
ESt
CALLSTDB
21
StD
R316B
20
INT
100K
19
CD
18
DR
17
DATA
16
DCLK
15
FSKen
14
PWDN
13
IC
CALLREVB
+5V
C305C
0.047
24
VDD
23
St/GT
22
ESt
CALLSTDC
21
StD
R316C
20
INT
100K
19
CD
18
DR
17
DATA
16
DCLK
15
FSKen
14
PWDN
13
IC
CALLREVC
+5V
C305D
0.047
24
VDD
23
St/GT
22
ESt
CALLSTDD
21
StD
R316D
20
INT
100K
19
CD
18
DR
17
16
15
14
13
IC
CALLREVD
LC73853M
R319A
R321A 39k
1 INP1
S/nESEL
100k
INM1
2 EST/STD4
R320A
R323A
100k
3 GS1 EST/STD3
100k
56k
R322A
TEST1
4 EST/STD2
R319B
R321B 39k
5 INP2
EST/STD1
100k
6 INM2
Q4
R320B
R323B 100k
100k 7 GS2 Q3
R322B 56k
8
VREF Q2
R319C
R321C 39k
9 INP3 Q1
100k
10 INM3 TOE4
R320C R323C
100k
100k 11 GS3 TOE3
56k
R322C
12 TOE2
TEST2
R319D
R321D 39k
13 INP4 TOE1
100k
14 INM4 nREST
R320D
R323D
100k
CLKSEL
100k 15 GS4
56k
R322D
16 GTSEL1 OSCI
17 GTSEL2 OSC0
18 Vss Vdd
+5V +5V
IC302
C306
0.1
+5V
J303
36
N.C
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
+5V
FLT301
1 3
2