Table of Contents
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A
TP421A
R207A
MWDC0
N.C
Q204A
Q203A
TP422A
R208A
N.C
DG
TP402A
CN200
RL200A
L200A
b
m
7
TA
6
5
6
26
TP400A
5
7
m
b
RL201A
CN201
ZNR22A
T
N.C
DIAG_T
FG
FG
TP403A
L201A
m
b
2
RA
4
3
1
TP401A
3
4
2
m
RL200A
b
RL201A
CN201
R
DIAG_R
B
TP421B
R207B
MWDC0
N.C
Q204B
Q203B
TP422B
R208B
N.C
DG
TP402B
CN200
L200B
m
6
TB
5
27
TP400B
7
b
RL200B
RL202B
CN201
ZNR22B
H
N.C
FG
TP403B
L201B
m
RB
4
2
TP401B
3
2
RL200B
b
CN201
L
C
R207C
TP421C
MWDC0
N.C
Q204C
Q203C
TP422C
R208C
N.C
DG
TP402C
CN200
L200C
m
TC
6
5
28
TP400C
7
b
RL200C
RL202C
CN202
ZNR22C
T
N.C
FG
TP403C
L201C
m
RC
4
3
TP401C
3
2
RL200C
b
CN202
R
D
TP421D
MWDC0
R207D
N.C
Q204D
Q203D
TP422D
R208D
N.C
DG
TP402D
CN200
L200D
m
TD
6
5
29
TP400D
7
b
RL202D
RL200D
CN202
ZNR22D
H
N.C
FG
TP403D
L201D
m
RD
4
4
TP401D
3
2
b
RL200D
CN202
L
KX-TDA0174 SCHEMATIC DIAGRAM NO.2
+15V
+15V
R204A
R201A
D201A
TP423A
N.C
N.C
2
1
TP412A
TP407A
2
9
RL203A
Q200A
D200A
RL203A
J202A
0
TP405A
m
4
TP411A
TP408A
3
2
TP409A
C200A
b
RL202A
50V/10u
ZNR20A
47V
C201A 50V/10u
ZNR23A
47V
R202A
FG
33K
ZNR21A
TP406A
22V
C202A
b
25V/4R7
7
TP410A
R203A
5
6
m
1K 1W
RL202A
DG
+15V
+15V
R201B
D201B
TP412B
TP423B
N.C
2
1
R204B
TP407B
N.C
2
9
RL203B
D200B
J202B
RL203B
m
4
TP411B
TP408B
3
2
TP409B
C200B
b
50V/10u
ZNR20B
47V
ZNR23B
C201B 50V/10u
47V
R202B
FG
33K
ZNR21B
C202B
22V
b
25V/4R7
7
TP410B
5
6
R203B
RL202B
m
1K 1W
DG
+15V
+15V
R201C
D201C
TP412C
N.C
TP423C
2
1
R204C
TP407C
N.C
2
9
RL203C
D200C
J202C
RL203C
m
TP411C
4
TP408C
3
2
TP409C
C200C
b
ZNR20C
50V/10u
47V
ZNR23C
C201C 50V/10u
47V
R202C
FG
33K
ZNR21C
22V
C202C
b
25V/4R7
7
TP410C
5
6
m
R203C
RL202C
1K 1W
DG
+15V
+15V
D201D
TP412D
R201D
TP423D
N.C
2
1
R204D
TP407D
N.C
2
9
RL203D
D200D
RL203D
J202D
m
4
TP411D
TP408D
3
2
TP409D
C200D
b
50V/10u
ZNR20D
47V
ZNR23D
C201D 50V/10u
47V
R202D
FG
33K
ZNR21D
22V
C202D
b
25V/4R7
7
TP410D
5
6
R203D
m
RL202D
1K 1W
DG
TP413A
C
B
+15V
R206A
E
D202A
220
TP420A
DG
2
1
C
TP418A
B
1
8
RL201A
Q201A
R234A
E
10K
IC200A
21
DG
15 T0
8
Vref
14 R0
7
A_IN
TP415A
6 T1
4
A_OUT
5 R1
3
HOOK
TP416A
9 RING
10
BELL
TP414A
12 +30V
11
TP417A
8
RLY
+30V
RL202A
2 +5V
1
DG
+5V
13
AG
D203A
C203A 0.1
C204A 0.1
AG
DG
TP413B
Q200B
C
B
E
DG
IC200B
15 T0
8
Vref
14 R0
7
A_IN
TP415B
6 T1
4
A_OUT
TP416B
5 R1
3
HOOK
9 RING
10
BELL
TP414B
12 +30V
11
8
RLY
+30V
TP417B
RL202B
2 +5V
1
DG
+5V
13
AG
D203B
C203B 0.1
C204B 0.1
AG
DG
TP413C
Q200C
C
B
E
DG
IC200C
15 T0
8
Vref
14 R0
7
A_IN
TP415C
6 T1
4
A_OUT
TP416C
5 R1
3
HOOK
9 RING
10
BELL
TP414C
TP417C
12 +30V
11
8
RLY
+30V
RL202C
2 +5V
1
DG
+5V
13
AG
D203C
C203C 0.1
C204C 0.1
AG
DG
TP413D
Q200D
C
B
E
DG
IC200D
15 T0
8
Vref
14 R0
7
A_IN
TP415D
6 T1
4
A_OUT
TP416D
5 R1
3
HOOK
9 RING
10
BELL
TP414D
TP417D
12 +30V
11
8
RLY
+30V
2 +5V
1
RL202D
+5V
DG
13
AG
D203D
C203D 0.1
C204D 0.1
AG
DG
D204
2
1
BELL0
1
8
RL200D
1
8
RL200C
MW[0]
1
8
+15V
R236
RL200B
56
1
8
TP450
RL200A
TP716
DIAG[0]
C
Q202
20
E
DG
VREF_C1
DG
+5V
VOUT[0]
DTMFR[0]
R207
22
HOOK[0]
BELL[0]
8
IC203
VREF_C1
+15V
1
1
TP421
4
C210
1
22
R208
22
DG
BELL0
TP422
HOOK[0]
35
SI1_1
MW[1]
EST[0]
TP423
36 SI1_0
R209
TP451
37
SB1_2
+5V
10K
TP424
38 SB1_1
DIAG[0]
R210
TP452
39 SB1_0
+5V
10K
40 SO1_1
TP425
MW[0]
TP426
BELL[0]
41
S01_0
VOUT[0]
TP427
51
VREF_C1
Vout1
DTMFR[0]
TP428
VOUT[1]
49
Vin1
TP610
C221
DTMFR[1]
0.1
HOOK[1]
BELL[1]
1
+15V
TP429
48
HOOK[1]
SI2_1
TP430
EST[1]
47 SI2_0
R211
TP453
SB2_2
46
+5V
10K
TP431
DIAG[1]
45 SB2_1
R212
TP454
44 SB2_0
+5V
BELL0
10K
TP432
43 SO2_1
MW[1]
BELL[1]
TP433
42
S02_0
VOUT[1]
TP434
53 Vout2
DTMFR[1]
TP435
55
MW[2]
Vin2
C222
TP611
0.1
VREF_C1
VOUT[2]
1
TP436
HOOK[2]
SI3_1
DTMFR[2]
2
TP437
EST[2]
SI3_0
HOOK[2]
R213
3
TP455
SB3_2
+5V
BELL[2]
4
DIAG[2]
10K
TP438
SB3_1
1
+15V
R214
TP456
5 SB3_0
+5V
MW[2]
TP439
6 SO3_1
10K
BELL[2]
TP440
7
S03_0
TP441
60
VOUT[2]
Vout3
DTMFR[2]
TP442
58
Vin3
TP612
C223
0.1
BELL0
MW[3]
TP443
14
HOOK[3]
SI4_1
TP444
13 SI4_0
EST[3]
R215
TP457
12
SB4_2
+5V
10K
TP445
DIAG[3]
11 SB4_1
R216
TP458
10 SB4_0
+5V
10K
9 SO4_1
MW[3]
TP446
8
BELL[3]
TP447
VREF_C1
S04_0
TP448
VOUT[3]
62 Vout4
VOUT[3]
DTMFR[3]
64
DTMFR[3]
Vin4
TP613
TP449
C224
HOOK[3]
0.1
BELL[3]
1
+15V
+15V
R235
6.8K
TP717
Q203
C
TP605
R227
PF_RLY
B
6.8K
E
TP604
R226
B
10K
R225
10K
DG
DG
R229
N.C
TP459
TP467
3
R228
2
100K
TP460
TP606
TP679
IC201
FIL200
TP468
L46
VDDD 24
1
3
0
2
GNDD 21
DG
VDDA12 52
C206
0.1
GNDA1 50
C204
DG
VREF 56
0.22
GNDA2 54
AG
VDDREF 57
C207
0.1
GNDA3 59
VDDA34 61
C208
0.1
GNDA4 63
AG
+3.3V
23
R282
10k
24
FSC 31
PCLK 32
DRB 30
DXB 29
28
TCB
TP461
DRA 27
TP654
DXA 26
25
L203
TCA
TP462
220
RESET 23
MCLK 22
TP655
CS 17
DCLK 18
DIN 19
TP652
DOUT 20
33
CHCLK1
TP463
L202
16
CHCLK2
220
TP464
34
INT12
TP465
15
TP653
INT34
TP466
R274
100
DIN
DIN
DOUT
DOUT
DCLK
DCLK
C_CS[0]
C_CS[0]
nRST
nRST
UHW
UHW
DHW
DHW
CLK
CLK
FH
FH
+5V
L50
0
C209
16V/1
(1)
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