Panasonic KX-TA308 Service Manual page 10

(1)
(2)
(3)
R235A
MUSIC ON
680K
HOLD SW
D210A
Q210A
(4) VAG
(5)
(6)
SHUNT MUTE CONF
(7)
SW SW SW
Q203A
Q202A Q204A
NO MOUNT
(8)
+12V
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
R235B
(17)
680K
D210B
Q210B
VAG
(18)
(19)
CO2
(20)
(21)
Q202B Q203B Q204B Q205B
NO MOUNT
(22)
+12V
(23)
(24)
(25)
(26)
(27)
(28)
(29)
(30)
680K
(31)
R235C
D210C
Q210C
VAG
(32)
(33)
(34)
CO3
(35)
Q203C Q204C Q205C
Q202C
NO MOUNT
(36)
+12V
(37)
(38)
(39)
(40)
(41)
(42)
DTMF SW
IC204
2
1
13
CO1
HD DTMF
SW SW
Q205A
Q206A
DTMF1
Q207A
HD1
CONF1
NORMAL 5V
MUTE1
SHUNT1
DS1
NORMAL 5V
PAD1
CDT1
DL1
BELLA1
NORMAL 5V
BELLB1
IC204
8
9
6
Q206B Q207B
DTMF2
HD2
CONF2
MUTE2
SHUNT2
DS2
PAD2
CDT2
DL2
BELLA2
BELLB2
10
11
IC204
12
Q206C Q207C
DTMF3
HD3
CONF3
MUTE3
SHUNT3
DS3
PAD3
CDT3
DL3
BELLA3
BELLB3
C281
+5V
+5V
0.022
C910
20
TONE COL1
19
0.1
CD COL2
2
XMIT COL3
12
MUTE COL4
9
OSCI ROW1
13
NC ROW2
R921
8
39K
NC ROW3
3
C908 NC ROW4
10
R920
OSCO NC
0.0015
R919
12K
2
1 IC130
DTMF
3 0
IC113
GENERATOR
VAG
DTMF AMPLIFIER
CO 1
CONTROL
CO 2
CO 3
CONTROL
CONTROL
+12V +12V +12V
8 8 8
4 4 4
+12V +12V +12V
14
14
14
7
7
7
+12V +12V +12V
14 14 14
7 7 7
+5V
DTMF GENERATOR
CONTROL
4
5
6
NORMAL
11
0V
17
16
15
14
18
CO G/A
IC205
4 P50 55
P00
5 P51 56
P01
6 P52 57
P02
7 P53 58
P03
8 P54 59
P04
DATA
9 P55 60
P05
10 P56 61
P06
11 P57 64
P07 5V
P60 31
CDT1
CONF1
13
0V
P10 P61 32
CDT2
MUTE1 14
P11 P62 34
CDT3
DL1 15
P12 P63 35
DS1 16
P13
SHUNT1 17
P14
18
HD1 D0 68 D0
P15
BELLA1 19
D1 69 D1
P16
BELLB1 20 D2 70 D2
P17
D3 71 D3
CONF2 21
D4 72 D4
P20
MUTE2 24 D5 74 D5
P21
DL2 25
D6 75 D6
P22
DS2 26
D7 76 D7
P23
SHUNT2 27
P24
HD2 A0
28 A0 77
P25
BELLA2 29 A1
A1 78
P26
A2
BELLB2 30
A2 79
P27
A3
A3 80
CONF3 36
P30
MUTE3 37 IORD
RD 66
P31
DL3 38 WR 65 IOWR
P32
39
DS3 CS 67 CS(COG/A)
P33
SHUNT3 40
RST 1 RESET
P34
HD3 41
P35 +5V
44
BELLA3
P36
BELLB3 45
VDD 33
P37
VDD 73
DTMF1
46 NC 3
P40
DTMF2 47
NC 22
P41
DTMF3 48
NC 62
P42
PAD1 49 NC 43
P43
50
PAD2 VSS 42
P44
51
PAD3 VSS 52
P45
VMDTMF1 53
VSS 2
P46
54
VMDTMF2 VSS 12
P47
VSS 23
VSS 63
VOICE MAIL
INTEGRATION CONTROL
CDT3
CDT2
CDT1
+12V
14
7
CO1
CO2
BGM
CO3
KX-TA308 MAIN BOARD NO.2 (2/2)
DTMFG
DTMFG
3.58MHz
3.58MHz
CN5
R280 330
14 PAY1
TO CALL ID
R281 330
CARD/PAY TONE
15 PAY2
R282
330
CARD
16 PAY3
R283
330
17 DIAL1
R284
330
18 DIAL2
R285
330
19 DIAL3
R286
330
20 CALLIDCARD
R287
330
21 PAYTONECARD
+5V
CN6
R276
DOORCARD
24
330
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
IORD
IOWR
CS(COG/A)
RESET
ADDRESS
5V
0V
VMDTMF2
VMDTMF1
+5V
R273C 47K
R273B 47K
R273A 47K
CN5
33 CO1
CO2
34
41 CO3
BGM
CO1
CO2
CO3