Panasonic KX-TA308 Service Manual page 17

C3A R1A
CN1
470P 220K
T1 2
C4A R2A
R1 1
470P 220K
T1 3
INCOMIG CALL ID DATA
(FSK)
+5V
R50A
Q50A
0
R52A D50A
4.7K
R1B
CN1 C3B
220K
470P
6
T2
C4B R2B
4
R2
470P 220K
T2 8
+5V
R50B
Q50B
0 R52B D50B
4.7K
R1C
CN1 C3C
220K
470P
T3 7
C4C R2C
R3 9
470P 220K
T3 5
PAY2 15
PAY1 14
PAY3 16
DIAL3 19
DIAL2 18
DIAL1 17
+5V
R50C
Q50C
0 R52C D50C
4.7K
+5V
+5V +5V
CALL ID IC
R10A
82K
1
IN+
82K
2
IN-
R11A R6A
3
GS
1.5M
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8
TRIGout
10K
9
MODE
R17A
X1 10
OSCin
3.58M
11
OSCout
3.58 MHz
12
VSS
CALL ID IC
C51A
3300P
R54A
390K
C52A
IC17A
0.068
IC17A
6
7
2
5
1
3
R55A
2.2K
+5V
+5V +5V
CALL ID IC
R10B
82K
1
IN+
82K
2
IN-
R11B
R6B
3
GS
1.5M
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8
TRIGout
10K
9
MODE
R17B
10
OSCin
11
OSCout
12
VSS
CALL ID IC
C51B
3300P
R54B
390K
C52B
IC17B
0.068
IC17B
6
2
7
1
5
3
R55B
2.2K
+5V +5V +5V
CALL ID IC
R10C
82K
1
IN+
82K
2
IN-
R11C R6C
3
GS
1.5M
4
VRef
5
CAP
6
TRIGin
7
TRIGRC
8
TRIGout
10K
9
MODE
R17C
10
OSCin
11
OSCout
12
VSS
CALL ID IC
C51C
3300P
R54C
390K
C52C
0.068
IC17C IC17C
6
2 7
1 5
3
R55C
2.2K
+5V
0.047
IC1A
C6A
24
VDD
23
St/GT
22
ESt
21
StD
R19A
20
INT
100K
19
CD
18
DR
17
DATA
16
DCLK
15
FSKen
14
PWDN
13
IC
+5V
R57A C53A
10K 0.068
R60A
220K
R60B
+5V
220K
C6B
0.047
IC1B
R60C
24
VDD
220K
23
St/GT
22
ESt
21
StD
R19B
20
INT
100K
19
CD
18
DR
17
DATA
16
DCLK
15
FSKen
14
PWDN
13
IC
STB1
STB2
+5V
C53B
R57B 0.068
10K
+5V
+5V
C6C
0.047
IC1C
24
VDD
23
St/GT
22
ESt
21
StD
R19C
20
INT
100K
19
CD
18
DR
17
DATA
16
DCLK
15
FSKen
14
PWDN
13
IC
+5V
R57C C53C
0.068
10K
C55A
3300P
C55B
3300P
C55C
3300P
DTMF
GENERATOR
CONTROL
+5V
COL1
COL2
COL3
COL4
ROW1
ROW2
ROW3
R26C ROW4
47K
+5V
CALLSTDA
FSKA
R26B
CALLSTDB
47K
FSKB
R26C
CALLSTDC
47K
FSKC
KX-TA308 CALLER ID CARD (1/2)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
IC11
G/A
(11)
4 55
P00 P50
5 56
(12)
P01 P51
6 57
P02 P52
(13)
7 58
P03 P53
8 59
P04 P54
9 60
P05 P55
10 61
P06 P56
11 64
P07 P57
31
13 P60
P10 32
14 P61
P11 34
15 P62
(14)
P12 35
16 P63
P13
17
P14
18 68
D0
P15
D0
19 69 D1
5
P16
D1
20 70 D2
P17
D2
DATA
71
D3 0
D3
21 72
D4
P20
D4
24 74 D5 (15)
P21
D5
25 75 D6
P22
D6
76
26 D7
P23 ADDRESS
D7
27
P24
28 77 A0
P25
A0
29 78 A1 5
P26
A1
79
30 A2
P27
A2
0
80
A3
A3
36
P30
(16)
37 66
P31
RD
38 65 (17)
P32
WR
39 67
(18)
P33
CS
40 1
P34
(19)
RST
41
+5V
P35
44
P36
45 33
VDD
P37
73
VDD
46 3
P40 NC
47 22
P41 NC
48 62
P42 NC
49 43
P43 NC
50 42
P44 VSS
51 52
P45 VSS
53 2
P46 VSS
54 12
VSS
P47
23
VSS
63
VSS
(20)
(21)
(22)
(23)