Panasonic KX-TDA0174 / KX-TDA0174XJ / KX-TDA0174X Service Manual / Supplement ▷ View online
3.2. No.2
CLK
UHW
C_CS[0]
DCLK
FH
nRST
DHW
DIN
DOUT
+5V
DG
0.1
C208
0.22
C204
AG
0.1
C206
CN201
T
DIAG_R
DIAG_T
CN201
R
MWDC0
1
CN200
26
PF_RLY
RL200A
8
1
D204
1
2
+15V
DG
RL200B
8
1
2
CN200
27
CN200
28
3
CN200
29
4
RL200C
8
1
RL200D
8
1
RL200A
3
2
4
RL200A
6
7
5
0.1
C207
IC203
1
2
3
8
4
IC201
5
SB3_0
6 SO3_1
S03_0
7
GNDA1 50
INT34
15
VDDA34 61
INT12
34
DRB 30
PCLK 32
FSC 31
DOUT 20
DIN 19
DXB 29
RESET 23
MCLK 22
CS 17
DCLK 18
4
SB3_1
SI3_1
1
2
SI3_0
SB3_2
3
VDDD 24
VDDA12 52
GNDA2 54
9 SO4_1
S04_0
8
10 SB4_0
11 SB4_1
SI4_1
14
13 SI4_0
SB4_2
12
39 SB1_0
38 SB1_1
SI1_1
35
36 SI1_0
SB1_2
37
44 SB2_0
45 SB2_1
SI2_1
48
47 SI2_0
SB2_2
46
VDDREF 57
40 SO1_1
S01_0
41
VREF 56
43 SO2_1
S02_0
42
GNDA3 59
GNDA4 63
GNDD 21
CHCLK1
33
CHCLK2
16
TCB
28
DRA
27
DXA
26
TCA
25
Vout1
51
Vin1
49
53 Vout2
Vin2
55
60
Vout3
Vin3
58
62 Vout4
Vin4
64
C205
0.1
AG
R207
22
R208
22
TP423
TP424
TP425
TP426
TP427
TP422
TP429
TP430
TP431
TP432
TP433
TP434
TP435
TP436
TP437
TP438
TP439
TP440
TP441
TP443
TP444
TP445
TP446
TP447
TP448
TP460
TP459
TP450
TP468
TP466
TP465
TP464
TP463
TP461
TP462
RL200B
3
2
4
CN201
H
CN201
L
RL200B
6
7
5
MWDC0
RL200C
3
2
4
CN202
T
CN202
R
RL200C
6
7
5
MWDC0
RL200D
3
2
4
CN202
H
CN202
L
RL200D
6
7
5
MWDC0
DG
FIL200
1
2
3
+5V
C217
1
C218
2.2
R209
10K
R210
10K
R211
10K
R212
10K
R213
10K
R214
10K
R215
10K
R216
10K
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
TP451
TP452
TP453
TP454
TP455
TP456
TP457
TP458
Q202
E
C
B
Q203
E
C
B
R225
10K
R226
10K
R227
6.8K
DG
DG
TP604
TP605
TP467
R228
100K
R230
N.C
R229
N.C
TP606
C221
0.1
C222
0.1
C223
0.1
C224
0.1
TP428
TP442
TP449
TP610
TP611
TP612
TP613
TP411A
TP409A
TP410A
TP414A
TP416A
TP415A
TP417A
+5V
DG
TP408A
RL202A
1
8
+15V
+30V
D203A
TP407A
TP420A
TP413A
TP418A
TP412A
Q201A
E
C
B
Q200A
E
C
B
RL201A
1
8
220
R206A
+15V
DG
D202A
1
2
N.C
R204A
+15V
D201A
1
2
RL203A
2
9
J202A
DG
RL202A
6
7
5
ZNR20A
47V
1K 1W
R203A
RL201A
3
2
4
ZNR21A
22V
RL202A
3
2
4
FG
RL201A
6
7
5
33K
R202A
DG
+15V
N.C
R201A
D200A
1
2
ZNR22A
N.C
FG
L200A
TP402A
TP406A
TP405A
TP403A
L201A
TP400A
TP401A
IC200A
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
R234A
10K
DG
TP411B
TP409B
TP410B
TP414B
TP416B
TP415B
TP417B
TP408B
RL202B
1
8
+15V
D203B
TP407B
TP413B
TP412B
Q200B
E
C
B
N.C
R204B
+15V
D201B
1
2
RL203B
2
9
J202B
DG
RL202B
6
7
5
ZNR20B
47V
1K 1W
R203B
ZNR21B
22V
RL202B
3
2
4
FG
33K
R202B
DG
+15V
N.C
R201B
D200B
1
2
ZNR22B
N.C
FG
L200B
TP402B
TP403B
L201B
TP400B
TP401B
IC200B
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200B
50V/10u
TP411C
TP409C
TP410C
TP414C
TP416C
TP415C
TP417C
TP408C
RL202C
1
8
+15V
D203C
TP407C
TP413C
TP412C
Q200C
E
C
B
N.C
R204C
+15V
D201C
1
2
RL203C
2
9
J202C
DG
RL202C
6
7
5
ZNR20C
47V
1K 1W
R203C
ZNR21C
22V
RL202C
3
2
4
FG
33K
R202C
DG
+15V
N.C
R201C
D200C
1
2
ZNR22C
N.C
FG
L200C
TP402C
TP403C
L201C
TP400C
TP401C
IC200C
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200C
50V/10u
TP411D
TP409D
TP410D
TP414D
TP416D
TP415D
TP417D
TP408D
RL202D
1
8
+15V
D203D
TP407D
TP413D
TP412D
Q200D
E
C
B
N.C
R204D
+15V
D201D
1
2
RL203D
2
9
J202D
DG
RL202D
6
7
5
ZNR20D
47V
1K 1W
R203D
ZNR21D
22V
RL202D
3
2
4
FG
33K
R202D
DG
+15V
N.C
R201D
D200D
1
2
ZNR22D
N.C
FG
L200D
TP402D
TP403D
L201D
TP400D
TP401D
IC200D
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200D
50V/10u
50V/10u
R235
6.8K
+15V
R236
56
Q204A
Q203A
R207A
N.C
N.C
R208A
DG
TP421A
TP422A
TP423A
TP421B
Q203B
TP422B
R207B
N.C
TP423B
DG
Q204B
N.C
R208B
TP421C
Q203C
TP422C
R207C
N.C
TP423C
DG
Q204C
N.C
R208C
TP421D
Q203D
TP422D
R207D
N.C
TP423D
DG
Q204D
N.C
R208D
C202A
25V/4R7
C202B
25V/4R7
C202C
25V/4R7
C202D
25V/4R7
C201A
50V/10u
C201B 50V/10u
C201C
50V/10u
C201D 50V/10u
L202
220
L203
220
R274
100
R275
100
TP652
TP653
TP654
TP655
R282
10k
+3.3V
L46
0
TP679
TP716
TP717
+30V
+5V
+30V
+5V
+30V
+5V
DG
DG
DG
AG
AG
AG
AG
DG
C209
16V/1
16V/1
L50
0
ZNR23A
47V
ZNR23B
47V
ZNR23C
47V
ZNR23D
47V
C204A 0.1
C203A 0.1
C204B 0.1
C203B
0.1
C204C
0.1
C203C
0.1
C204D 0.1
C203D
0.1
C203
0.1
C210
1
TP421
RL203A
5
1
10
6
RL203B
5
1
10
6
RL203C
5
1
10
6
RL203D
5
1
10
6
FG
50V/10u
C200A
DHW
DOUT
CLK
C_CS[0]
FH
DCLK
nRST
EST[0]
MW[0]
BELL[0]
BELL[0]
DIAG[0]
RA
TA
DIAG[1]
BELL[1]
MW[1]
EST[1]
MW[2]
EST[2]
BELL[2]
DIAG[2]
EST[3]
DIAG[3]
BELL[3]
MW[3]
VREF_C1
VOUT[0]
DTMFR[0]
VOUT[2]
DTMFR[2]
VOUT[3]
DTMFR[3]
VOUT[1]
DTMFR[1]
HOOK[0]
HOOK[1]
HOOK[3]
HOOK[2]
VREF_C1
TB
RB
HOOK[2]
VOUT[2]
MW[2]
BELL0
TC
RC
DTMFR[2]
VREF_C1
BELL[2]
HOOK[3]
VOUT[3]
MW[3]
TD
RD
DTMFR[3]
VREF_C1
BELL[3]
BELL[1]
HOOK[1]
MW[1]
VOUT[1]
DTMFR[1]
VREF_C1
BELL0
BELL0
MW[0]
BELL0
VOUT[0]
DTMFR[0]
HOOK[0]
BELL[0]
DIAG[0]
DIN
UHW
b
b
m
m
m
m
b
b
m
m
b
b
m
m
b
b
C
D
B
m
b
b
m
m
b
m
b
b
m
A
m
b
b
m
b
m
m
b
b
m
b
m
m
b
b
m
b
m
(1)
KX-TDA0174 SCHEMATIC DIAGRAM NO.2
20
22
21
23
24
D205A
DG
D205B
DG
D205C
DG
D205D
DG
13
KX-TDA0174 / KX-TDA0174XJ / KX-TDA0174X
CLK
UHW
C_CS[1]
DCLK
FH
nRST
DHW
DIN
DOUT
CN200
30
5
DTMFR[0-7]
VOUT[0-7]
EST[0-7]
MWDC0
CN200
31
6
MWDC0
CN200
32
7
MWDC0
CN200
33
8
MWDC0
TP486
IC203
5
6
7
TP510
TP494
TP480
TP495
TP476
C215
0.1
TP505
TP485
0.22
C211
TP481
TP512
TP473
TP492
TP478
TP470
TP490
C214
0.1
AG
TP487
TP471
TP472
DG
TP493
TP509
IC202
5
SB3_0
6 SO3_1
S03_0
7
GNDA1 50
INT34
15
VDDA34 61
INT12
34
DRB
30
PCLK 32
FSC 31
DOUT 20
DIN
19
DXB
29
RESET 23
MCLK
22
CS
17
DCLK 18
4
SB3_1
SI3_1
1
2
SI3_0
SB3_2
3
VDDD 24
VDDA12 52
GNDA2 54
9 SO4_1
S04_0
8
10 SB4_0
11 SB4_1
SI4_1
14
13 SI4_0
SB4_2
12
39 SB1_0
38 SB1_1
SI1_1
35
36
SI1_0
SB1_2
37
44 SB2_0
45 SB2_1
SI2_1
48
47 SI2_0
SB2_2
46
VDDREF
57
40
SO1_1
S01_0
41
VREF 56
43 SO2_1
S02_0
42
GNDA3 59
GNDA4 63
GNDD 21
CHCLK1
33
CHCLK2
16
TCB
28
DRA 27
DXA
26
TCA
25
Vout1
51
Vin1
49
53 Vout2
Vin2
55
60
Vout3
Vin3
58
62 Vout4
Vin4
64
TP491
TP506
TP488
AG
TP477
TP469
TP484
0.1
C213
TP483
TP508
C212
0.1
TP507
TP474
TP479
FIL201
1
2
3
DG
+5V
C219
1
C220
2.2
R217
10K
R218
10K
R219
10K
R220
10K
R221
10K
R222
10K
R223
10K
R224
10K
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
TP497
TP498
TP500
TP499
TP501
TP502
TP503
TP504
TP511
R231
100K
R232
N.C
R233
N.C
+5V
TP607
C225
0.1
C226
0.1
C227
0.1
C228
0.1
TP496
TP489
TP482
TP475
TP614
TP615
TP616
TP617
TP411E
TP409E
TP410E
TP414E
TP416E
TP415E
TP417E
TP408E
RL202E
1
8
+15V
D203E
TP407E
TP413E
TP412E
Q200E
E
C
B
N.C
R204E
+15V
D201E
1
2
RL203E
2
9
J202E
DG
RL202E
6
7
5
ZNR20E
47V
1K 1W
R203E
ZNR21E
22V
RL202E
3
2
4
FG
33K
R202E
DG
+15V
N.C
R201E
D200E
1
2
ZNR22E
N.C
FG
L200E
TP402E
TP403E
L201E
TP400E
TP401E
IC200E
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200E
50V/10u
TP411F
TP409F
TP410F
TP414F
TP416F
TP415F
TP417F
TP408F
RL202F
1
8
+15V
D203F
TP407F
TP413F
TP412F
Q200F
E
C
B
N.C
R204F
+15V
D201F
1
2
RL203F
2
9
J202F
DG
RL202F
6
7
5
ZNR20F
47V
1K 1W
R203F
ZNR21F
22V
RL202F
3
2
4
FG
33K
R202F
DG
+15V
N.C
R201F
D200F
1
2
ZNR22F
N.C
FG
L200F
TP402F
TP403F
L201F
TP400F
TP401F
IC200F
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200F
50V/10u
TP411G
TP409G
TP410G
TP414G
TP416G
TP415G
TP417G
TP408G
RL202G
1
8
+15V
D203G
TP407G
TP413G
TP412G
Q200G
E
C
B
N.C
R204G
+15V
D201G
1
2
RL203G
2
9
J202G
DG
RL202G
6
7
5
ZNR20G
47V
1K 1W
R203G
ZNR21G
22V
RL202G
3
2
4
FG
33K
R202G
DG
+15V
N.C
R201G
D200G
1
2
ZNR22G
N.C
FG
L200G
TP402G
TP403G
L201G
TP400G
TP401G
IC200G
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200G
50V/10u
TP411H
TP409H
TP410H
TP414H
TP416H
TP415H
TP417H
TP408H
RL202H
1
8
+15V
D203H
TP407H
TP413H
TP412H
Q200H
E
C
B
N.C
R204H
+15V
D201H
1
2
RL203H
2
9
J202H
DG
RL202H
6
7
5
ZNR20H
47V
1K 1W
R203H
ZNR21H
22V
RL202H
3
2
4
FG
33K
R202H
DG
+15V
N.C
R201H
D200H
1
2
ZNR22H
N.C
FG
L200H
TP402H
TP403H
L201H
TP400H
TP401H
IC200H
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200H
50V/10u
TP421E
Q203E
TP422E
R207E
N.C
TP423E
DG
Q204E
N.C
R208E
TP421F
Q203F
TP422F
R207F
N.C
TP423F
DG
Q204F
N.C
R208F
TP421G
Q203G
TP422G
R207G
N.C
TP423G
DG
Q204G
N.C
R208G
TP421H
Q203H
TP422H
R207H
N.C
TP423H
DG
Q204H
N.C
R208H
C202E
25V/4R7
C202F
25V/4R7
C202G
25V/4R7
C202H
25V/4R7
BELL0
C201E
50V/10u
C201F
50V/10u
C201G 50V/10u
C201H
50V/10u
L204
220
L205
220
R276
100
R277
100
TP656
TP657
TP658
TP659
+3.3V
R283
N.C
L47
0
TP680
TP718
+30V
+5V
+30V
+5V
+30V
+5V
+30V
+5V
DG
DG
DG
DG
AG
AG
AG
AG
C216
16V/1
DG
L51
0
ZNR23E
47V
ZNR23F
47V
ZNR23G
47V
ZNR23H
47V
C204E 0.1
C203E
0.1
C204F 0.1
C203F
0.1
C204G 0.1
C203G
0.1
C204H
0.1
C203H
0.1
RL203E
5
1
10
6
RL203F
5
1
10
6
RL203G
5
1
10
6
RL203H
5
1
10
6
BELL0,BELL[0-7],HOOK[0-7],DIAG[0-7],DTMFR[0-7],EST[0-7],MW[0-7],VOUT[0-7],VREF_C1,VREF_C2
HOOK[4]
VOUT[4]
MW[4]
TE
DTMFR[4]
RE
VREF_C2
BELL[4]
HOOK[5]
RF
MW[5]
TF
DTMFR[5]
VREF_C2
VOUT[5]
BELL[5]
HOOK[6]
RG
MW[6]
TG
DTMFR[6]
VREF_C2
VOUT[6]
BELL[6]
HOOK[7]
RH
MW[7]
TH
DTMFR[7]
VREF_C2
VOUT[7]
BELL[7]
BELL0
VOUT[7]
BELL[5]
BELL[6]
VOUT[4]
BELL[4]
DIAG[5]
DTMFR[7]
EST[7]
MW[6]
DIAG[7]
HOOK[6]
EST[6]
VOUT[5]
BELL[7]
MW[5]
DTMFR[6]
VOUT[6]
EST[5]
MW[4]
DIAG[6]
HOOK[5]
HOOK[4]
DIAG[4]
DOUT
DCLK
C_CS[1]
nRST
DHW
CLK
FH
BELL0
BELL0
BELL0
EST[4]
HOOK[7]
MW[7]
DTMFR[4]
DTMFR[5]
DIN
UHW
VREF_C2
E
F
G
H
m
b
b
m
b
m
m
b
b
m
b
m
m
b
m
b
m
m
b
b
m
b
m
(1)
D205E
DG
D205F
DG
D205G
DG
D205H
DG
14
KX-TDA0174 / KX-TDA0174XJ / KX-TDA0174X
3.3. No.3
CLK
UHW
C_CS[2]
DCLK
FH
nRST
DHW
DIN
DOUT
+5V
DG
0.1
C255
0.22
C251
AG
0.1
C253
MWDC1
9
CN200
34
10
CN200
35
CN200
36
11
CN200
37
12
0.1
C254
IC252
1
2
3
8
4
IC250
5 SB3_0
6 SO3_1
S03_0
7
GNDA1 50
INT34 15
VDDA34 61
INT12 34
DRB
30
PCLK
32
FSC 31
DOUT 20
DIN
19
DXB
29
RESET
23
MCLK 22
CS 17
DCLK 18
4
SB3_1
SI3_1
1
2
SI3_0
SB3_2
3
VDDD 24
VDDA12 52
GNDA2
54
9 SO4_1
S04_0
8
10 SB4_0
11 SB4_1
SI4_1
14
13 SI4_0
SB4_2
12
39
SB1_0
38
SB1_1
SI1_1
35
36
SI1_0
SB1_2
37
44 SB2_0
45 SB2_1
SI2_1
48
47 SI2_0
SB2_2
46
VDDREF 57
40
SO1_1
S01_0
41
VREF 56
43 SO2_1
S02_0
42
GNDA3 59
GNDA4
63
GNDD
21
CHCLK1 33
CHCLK2 16
TCB
28
DRA
27
DXA
26
TCA
25
Vout1
51
Vin1
49
53
Vout2
Vin2
55
60 Vout3
Vin3
58
62 Vout4
Vin4
64
C252
0.1
AG
R250
22
R251
22
TP515
TP516
TP517
TP518
TP519
TP514
TP521
TP522
TP523
TP524
TP525
TP526
TP528
TP529
TP530
TP531
TP532
TP533
TP535
TP536
TP537
TP538
TP539
TP540
TP541
TP551
TP550
TP559
TP557
TP556
TP555
TP554
TP552
TP553
MWDC1
MWDC1
DG
FIL251
1
2
3
+5V
C264
1
C265
2.2
R252
10K
R253
10K
R254
10K
R255
10K
R256
10K
R257
10K
R258
10K
R259
10K
+5V
TP542
+5V
TP543
+5V
+5V
TP544
TP545
+5V
+5V
TP546
TP547
+5V
+5V
TP548
TP549
TP558
R268
100K
100K
R269
N.C
R270
N.C
TP608
C268
0.1
C269
0.1
C270
0.1
C271
0.1
TP520
TP527
TP534
TP618
TP619
TP620
TP621
TP411I
TP409I
TP410I
TP414I
TP416I
TP415I
TP417I
+5V
TP408I
RL202I
1
8
+15V
+30V
D203I
TP407I
TP413I
TP412I
Q200I
E
C
B
N.C
R204I
+15V
D201I
1
2
RL203I
2
9
J202I
DG
RL202I
6
7
5
ZNR20I
47V
1K 1W
R203I
ZNR21I
22V
RL202I
3
2
4
FG
33K
R202I
DG
+15V
N.C
R201I
D200I
1
2
ZNR22I
N.C
FG
L200I
TP402I
TP403I
L201I
TP400I
TP401I
IC200I
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200I
50V/10u
TP411J
TP409J
TP410J
TP414J
TP416J
TP415J
TP417J
TP408J
RL202J
1
8
+15V
D203J
TP407J
TP413J
TP412J
Q200J
E
C
B
N.C
R204J
D201J
1
2
RL203J
2
9
J202J
RL202J
6
7
5
ZNR20J
47V
1K 1W
R203J
ZNR21J
22V
RL202J
3
2
4
33K
R202J
+15V
N.C
R201J
D200J
1
2
ZNR22J
N.C
L200J
TP402J
TP403J
L201J
TP400J
TP401J
IC200J
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200J
50V/10u
TP411K
TP409K
TP410K
TP414K
TP416K
TP415K
TP417K
TP408K
RL202K
1
8
+15V
D203K
TP407K
TP413K
TP412K
Q200K
E
C
B
N.C
R204K
D201K
1
2
RL203K
2
9
J202K
DG
RL202K
6
7
5
ZNR20K
47V
1K 1W
R203K
ZNR21K
22V
RL202K
3
2
4
33K
R202K
+15V
N.C
R201K
D200K
1
2
ZNR22K
N.C
L200K
TP402K
TP403K
L201K
TP400K
TP401K
IC200K
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200K
50V/10u
TP411L
TP409L
TP410L
TP414L
TP416L
TP415L
TP417L
TP408L
RL202L
1
8
+15V
D203L
TP407L
TP413L
TP412L
Q200L
E
C
B
N.C
R204L
+15V
D201L
1
2
RL203L
2
9
J202L
DG
RL202L
6
7
5
ZNR20L
47V
1K 1W
R203L
ZNR21L
22V
RL202L
3
2
4
33K
R202L
DG
+15V
N.C
R201L
D200L
1
2
ZNR22L
N.C
L200L
TP402L
TP403L
L201L
TP400L
TP401L
IC200L
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200L
50V/10u
TP421I
Q203I
TP422I
R207I
N.C
TP423I
DG
Q204I
N.C
R208I
TP421J
Q203J
TP422J
R207J
N.C
TP423J
Q204J
N.C
R208J
TP421K
Q203K
TP422K
R207K
N.C
TP423K
Q204K
N.C
R208K
TP421L
Q203L
TP422L
R207L
N.C
TP423L
DG
Q204L
N.C
R208L
C202I
25V/4R7
C202J
25V/4R7
C202K
25V/4R7
C202L
25V/4R7
C201I
50V/10u
C201J
50V/10u
C201K
50V/10u
C201L
50V/10u
L206
220
L207
220
R278
100
R279
100
TP660
TP661
TP662
TP663
+3.3V
R284
N.C
L48
0
TP681
DG
DG
DG
+30V
+5V
+30V
+5V
+30V
+5V
+15V
DG
DG
DG
+15V
DG
DG
FG
FG
FG
FG
FG
FG
AG
AG
AG
C256
16V/1
DG
L52
0
ZNR23I
47V
ZNR23J
47V
ZNR23K
47V
ZNR23L
47V
C203I
0.1
C204I
0.1
C204J
0.1
C203J
0.1
C204K
0.1
C203K
0.1
C204L
0.1
C203L
0.1
AG
DG
C250
0.1
C257
1
TP513
RL203I
5
1
10
6
RL203J
5
1
10
6
RL203K
5
1
10
6
RL203L
5
1
10
6
DHW
DOUT
CLK
C_CS[2]
FH
DCLK
nRST
EST[8]
MW[8]
BELL[8]
DIAG[8]
DIAG[9]
BELL[9]
MW[9]
EST[9]
MW[10]
EST[10]
BELL[10]
DIAG[10]
EST[11]
DIAG[11]
BELL[11]
MW[11]
VOUT[8]
DTMFR[8]
VOUT[10]
DTMFR[10]
VOUT[11]
DTMFR[11]
VOUT[9]
DTMFR[9]
RI
HOOK[8]
TI
HOOK[9]
HOOK[11]
HOOK[10]
VREF_C3
HOOK[10]
VOUT[10]
MW[10]
BELL1
DTMFR[10]
TK
RK
VREF_C3
BELL[10]
HOOK[11]
VOUT[11]
MW[11]
DTMFR[11]
TL
RL
VREF_C3
BELL[11]
TJ
RJ
BELL[9]
HOOK[9]
MW[9]
VOUT[9]
DTMFR[9]
VREF_C3
BELL1
BELL[8]
HOOK[8]
DTMFR[8]
VOUT[8]
MW[8]
BELL1
BELL1
VREF_C3
MWDC1
DIN
UHW
K
L
J
I
m
b
b
m
b
m
m
b
b
m
b
m
m
b
b
m
b
m
m
b
b
m
b
m
(1)
KX-TDA0174 SCHEMATIC DIAGRAM NO.3
D205I
DG
D205J
DG
D205K
DG
D205L
DG
15
KX-TDA0174 / KX-TDA0174XJ / KX-TDA0174X
CLK
UHW
C_CS[3]
DCLK
FH
nRST
DHW
DIN
DOUT
CN200
38
13
DTMFR[8-15]
VOUT[8-15]
EST[8-15]
MWDC1
CN200
39
14
MWDC1
CN200
40
15
MWDC1
CN200
41
16
MWDC1
TP577
IC252
5
6
7
TP601
TP585
TP571
TP586
TP567
C262
0.1
TP596
TP576
0.22
C258
TP572
TP603
TP564
TP583
TP569
TP561
TP581
C261
0.1
AG
TP578
TP562
TP563
DG
TP584
TP600
IC251
5 SB3_0
6 SO3_1
S03_0
7
GNDA1 50
INT34
15
VDDA34
61
INT12
34
DRB
30
PCLK
32
FSC 31
DOUT 20
DIN
19
DXB 29
RESET 23
MCLK
22
CS 17
DCLK
18
4
SB3_1
SI3_1
1
2
SI3_0
SB3_2
3
VDDD 24
VDDA12 52
GNDA2 54
9
SO4_1
S04_0
8
10 SB4_0
11 SB4_1
SI4_1
14
13 SI4_0
SB4_2
12
39 SB1_0
38 SB1_1
SI1_1
35
36 SI1_0
SB1_2
37
44 SB2_0
45 SB2_1
SI2_1
48
47 SI2_0
SB2_2
46
VDDREF 57
40 SO1_1
S01_0
41
VREF 56
43 SO2_1
S02_0
42
GNDA3
59
GNDA4
63
GNDD 21
CHCLK1
33
CHCLK2
16
TCB
28
DRA
27
DXA 26
TCA
25
Vout1
51
Vin1
49
53 Vout2
Vin2
55
60 Vout3
Vin3
58
62 Vout4
Vin4
64
TP582
TP597
TP579
AG
TP568
TP560
TP575
0.1
C260
TP574
TP599
C259
0.1
TP598
TP565
TP570
DG
FIL252
1
2
3
+5V
C266
1
C267
2.2
R260
10K
R261
10K
R262
10K
R263
10K
R264
10K
R265
10K
R266
10K
R267
10K
+5V
+5V
TP589
TP588
+5V
+5V
TP591
TP590
+5V
+5V
TP593
TP592
+5V
+5V
TP594
TP595
TP602
R271
100K
R272
N.C
R273
N.C
+5V
TP609
C272
0.1
C273
0.1
C274
0.1
C275
0.1
TP566
TP573
TP580
TP587
TP622
TP623
TP624
TP625
TP411M
TP409M
TP410M
TP414M
TP416M
TP415M
TP417M
TP408M
RL202M
1
8
+15V
D203M
TP407M
TP413M
TP412M
Q200M
E
C
B
N.C
R204M
+15V
D201M
1
2
RL203M
2
9
J202M
DG
RL202M
6
7
5
ZNR20M
47V
1K 1W
R203M
ZNR21M
22V
RL202M
3
2
4
FG
33K
R202M
DG
+15V
N.C
R201M
D200M
1
2
ZNR22M
N.C
FG
L200M
TP402M
TP403M
L201M
TP400M
TP401M
IC200M
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2
+5V
12
+30V
9
RING
5
R1
6
T1
14
R0
15
T0
13
AG
C200M
50V/10u
TP411N
TP409N
TP410N
TP414N
TP416N
TP415N
TP417N
TP408N
RL202N
1
8
+15V
D203N
TP407N
TP413N
TP412N
Q200N
E
C
B
N.C
R204N
+15V
D201N
1
2
RL203N
2
9
J202N
DG
RL202N
6
7
5
ZNR20N
47V
1K 1W
R203N
ZNR21N
22V
RL202N
3
2
4
FG
33K
R202N
DG
+15V
N.C
R201N
D200N
1
2
ZNR22N
N.C
FG
L200N
TP402N
TP403N
L201N
TP400N
TP401N
IC200N
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200N
50V/10u
TP411O
TP409O
TP410O
TP414O
TP416O
TP415O
TP417O
TP408O
RL202O
1
8
+15V
D203O
TP407O
TP413O
TP412O
Q200O
E
C
B
N.C
R204O
+15V
D201O
1
2
RL203O
2
9
J202O
DG
RL202O
6
7
5
ZNR20O
47V
1K 1W
R203O
ZNR21O
22V
RL202O
3
2
4
FG
33K
R202O
DG
+15V
N.C
R201O
D200O
1
2
ZNR22O
N.C
FG
L200O
TP402O
TP403O
L201O
TP400O
TP401O
IC200O
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2 +5V
12 +30V
9 RING
5 R1
6 T1
14 R0
15 T0
13
AG
C200O
50V/10u
TP411P
TP409P
TP410P
TP414P
TP416P
TP415P
TP417P
TP408P
RL202P
1
8
+15V
D203P
TP407P
TP413P
TP412P
Q200P
E
C
B
N.C
R204P
+15V
D201P
1
2
RL203P
2
9
J202P
DG
RL202P
6
7
5
ZNR20P
47V
1K 1W
R203P
ZNR21P
22V
RL202P
3
2
4
FG
33K
R202P
DG
+15V
N.C
R201P
D200P
1
2
ZNR22P
N.C
FG
L200P
TP402P
TP403P
L201P
TP400P
TP401P
IC200P
8
Vref
7
A_IN
4
A_OUT
3
HOOK
10
BELL
11
RLY
1
DG
2
+5V
12
+30V
9
RING
5
R1
6
T1
14
R0
15
T0
13
AG
C200P
50V/10u
TP421M
Q203M
TP422M
R207M
N.C
TP423M
DG
Q204M
N.C
R208M
TP421N
Q203N
TP422N
R207N
N.C
TP423N
DG
Q204N
N.C
R208N
TP421O
Q203O
TP422O
R207O
N.C
TP423O
DG
Q204O
N.C
R208O
TP421P
Q203P
TP422P
R207P
N.C
TP423P
DG
Q204P
N.C
R208P
C202M
25V/4R7
C202N
25V/4R7
C202O
25V/4R7
C202P
25V/4R7
BELL1
C201M
50V/10u
C201N
50V/10u
C201O
50V/10u
C201P 50V/10u
L208
220
L209
220
R280
100
R281
100
TP664
TP665
TP666
TP667
L49
0
TP682
+3.3V
R285
N.C
TP719
DG
DG
DG
DG
+30V
+5V
+30V
+5V
+30V
+5V
+30V
+5V
AG
AG
AG
AG
DG
C263
16V/1
L53
0
ZNR23M
47V
ZNR23N
47V
ZNR23O
47V
ZNR23P
47V
C204M 0.1
C203M 0.1
C204N
0.1
C203N
0.1
C204O
0.1
C203O
0.1
C204P
0.1
C203P
0.1
RL203M
5
1
10
6
RL203N
5
1
10
6
RL203O
5
1
10
6
RL203P
5
1
10
6
BELL1,BELL[8-15],HOOK[8-15],DIAG[8-15],DTMFR[8-15],EST[8-15],MW[8-15],VOUT[8-15],VREF_C3,VREF_C4
HOOK[12]
VOUT[12]
MW[12]
TM
DTMFR[12]
RM
VREF_C4
BELL[12]
HOOK[13]
RN
MW[13]
TN
DTMFR[13]
VREF_C4
VOUT[13]
BELL[13]
HOOK[14]
RO
MW[14]
TO
DTMFR[14]
VREF_C4
VOUT[14]
BELL[14]
HOOK[15]
RP
MW[15]
TP
DTMFR[15]
VREF_C4
VOUT[15]
BELL[15]
BELL1
VOUT[15]
BELL[13]
BELL[14]
VOUT[12]
BELL[12]
DIAG[13]
DTMFR[15]
EST[15]
MW[15]
MW[14]
DIAG[15]
HOOK[14]
EST[14]
VOUT[13]
BELL[15]
MW[13]
DTMFR[14]
VOUT[14]
EST[13]
MW[12]
DIAG[14]
HOOK[13]
HOOK[12]
DIAG[12]
DOUT
DCLK
C_CS[3]
nRST
DHW
CLK
FH
BELL1
BELL1
BELL1
EST[12]
HOOK[15]
DTMFR[12]
DTMFR[13]
DIN
UHW
VREF_C4
VREF_C4
M
N
O
P
m
b
b
m
b
m
m
b
b
m
b
m
m
b
b
m
b
m
m
b
b
m
b
m
(1)
D205M
DG
D205N
DG
D205O
DG
D205P
DG
16
KX-TDA0174 / KX-TDA0174XJ / KX-TDA0174X
Click on the first or last page to see other KX-TDA0174 / KX-TDA0174XJ / KX-TDA0174X service manuals if exist.