Panasonic KX-TC1400B / KX-TC1400W Service Manual ▷ View online
15 SCHEMATIC DIAGRAM (Base Unit)
15.1. Base Unit No. 1
33K
R410
1u
C425
47K
R414
10V100
C408
LCT
K0.1
C402
J39P
C209
0.1
C207
82K
R407
R901
K0.033
C429
R426
0
C802
M1000P
C801
3000V
0.033
C410
RFUNIT
1
MOD
2
VB
3
RXB
4
UNLOCK
5
DATA
6
CK
7
PLLRST
8
TXB
9
GND
10
SQL
11
AF
12
AGC
13
AGND
14
ANT
K0.1
C419
10V22
C406
100K
R419
4700P
C211
33K
R413
K1500P
C414
10K
R217
1K
R207
R427
K0.1
C411
2200P
C421
50K
VR401
J39P
C208
6800P
C417
15K
R412
D803
C212
C403
39K
R430
L801
3.3n
C803
R903
0.1
C404
R428
25V4.7
C418
15K
R418
LOCATOR
S201
10K
R218
10K
R408
D801
330
R429
VR402
20K
2.2K
R219
Data Amp
+ -
+
-
TXMUTE
+ -
+
-
GND
COMP
+
-
LINE
Amp
VCC
+
-
VCC
VREG
REG
3.3V
RXMUTE
LIMITTER
+ -
EXP
PREAmp
RCVAmp
SFC2
SFC1
COR
Splatter
Amp
IC401
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
100
NC
NC
NC
R206
3.573M
X201
C426
D802
R904
K0.1
C409
AF_AMP
Q401
47K
R212
25V4.7
C412
22K
R415
1800P
C416
L802
K0.1
C407
IC201
MN150832BB1
1
BELL
2
(CURRENT)
3
RLY
4
L_SZ
5
CLK_LOW
6
(TX_BE)
7
RXD
8
P_EN
9
RXP
10
TXD
11
TXP2
12
TXP
13
TX_MU
14
RX_MU
15
(RXL_MU)
16
TXL_MU
17
AC_D
18
SQL
19
P_UL
20
SP_ON
21
MC_MU
22
SP_MU
23
(TCHG)
24
(UCHG)
25
OPT1
26
OPT2
27
OPT3
28
OPT4
29
SPV0
30
SPV1
31
SPV2
32
SPV3
33
KEY7
34
KEY6
35
KEY5
36
TEST
37
KEY1
38
KEY2
39
KEY3
40
KEY4
41
KEYD
42
KEYC
43
KEYB
44
KEYA
45
SP_LED
46
IU_LED
47
CHG_CTL
48
CHG
49
P_CLK
50
P_DAT
51
P_DOWN
52
BE_CLK
53
BE_CT1
54
BE_CT2
55
HOOK
56
IRQ
57
VSS
58
OSC1
59
OSC2
60
VDD
61
SIRQ
62
DTMF
63
RST
64
SYNC
15K
R416
15K
R417
K0.068
C420
33K
R411
0.1
C809
1200P
C413
R425
4.7K
R409
100
R205
10V22
C405
120K
R420
R211
K0.033
C106
C401
K2200P
ANT
D904
DD
D903
DC
D905
DE
D906
DF
D907
DG
D908
DH
NC
NC
NC
NC
NC
NC
TC
TEST
TA
100K
R229
R807
SQ
C808
C805
10K
R808
10K
R805
3300P
C423
6800P
C424
10K
R803
10K
R804
R204
NC
100P
C804
100P
C806
100P
C807
1000P
C220
C223
50V2.2
C415
8.2K
R424
1K
R233
1K
R234
1K
R235
1M(1/4)
R801
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
J802
R422
C811
J201
J202
J203
J204
J208
J210
J213
J214
GR
GT
0
R902
68K
R421
K0.01
C422
(1)
(2)
(3)(4) (5)
(6)
(7)
(8) (9)(10) (12)
(14)
(15) (16)
(17)
(11) (13)
NC
NC
340 mV
50 mV
280 mV
220 mV
230 mV
350 mV
80 mV
Input
1 kHz TONE
5 kHz devi.
4.3V
4.9V
5.4V
TX Signal
RX Signal
KX-TC1400B / KX-TC1400W
25
15.2. Base Unit No. 2
100K
R107
33(1/2)
R117
1K
R210
C107
Z0.01
C105
K680P
500V
47K
R104
K0.22
C203
K0.068
C116
100K
R362
56K
R103
10K
R360
D355
Q102
2SA1625
33
L102
1.5M
R102
100P
C113
RESET
Q203
Q106
C427
LED201
INUSE
39K
R116
0.1
C202
16V10
C115
0.1
C205
K0.1
C121
D356
0
100K
R215
0.1
C363
0.018
C101
33
L354
100K
R209
CHG.CNT
Q352
2SD1994
C122
1000P
C103
Q105
LB
0.1
C352
D205
4.7K
R108
CN352
1
CHG+
CHG+
2
CHGC
CHGC
3
CHG-
CHG-
100K
R222
D103
33
L101
K0.01
C114
SA102
0.018
C102
Q351
ID.BUF
R121
C104
K680P
500V
680
R364
R114
6.3V1000
C206
LA
47
R120
10
L351
220
R358
R105
100K
(1/4W)
D101
2
13
4
D204
DCM
4.7K
R133
1.5K
R118
1000P
C204
Q101
100K
R208
D201
3.3
L355
25V10
C112
R122
D104
IC202
RESET
4.2V
1
VCC
VCC
2
GND
3
OUT
18
R353
1.5M
R101
18V
D102
4.7K
R106
(1/4W)
DCP
3.3K
R119
470
R213
6.3V1000
C201
R128
SA101
P101
47K
R359
C361
R123
12K
R132
2.2K
R115
330(1/2)
NC
NC
NC
NC
NC
R352
0.1
C357
CHG.DET
Q353
150K
R216
47K
R351
CN101
1A
2B
3
DC+
DC+
4
DC-
DC-
D106
D105
R126 C118
IC101
ALC
1
Vcc
2
DET
3
IN
4
GND
5
OUT
C351
NC
R138
NC
NC
R139
C131
R140
NC
NC
NC
R111
R355
IC351
6V.REG.
1
OUT
3
GND
2
IN
16V10
C353
10
R361
R356
10K
R214
CC
CM
CP
R354
Q103
100K
R223
R221
C126
K0.01
C125
R112
R113
C111
C108
30V
D500
R502
22V
D380
C503
C221
C222 NC
NC
NC
1K
D203
16V10
C124
K0.1
C123
R135
560
NC
NC
NC
NC
NC
NC
NC
R134
220K
R136
4.7K
R137
10
RCV.AMP
Q108
22V
D359
22V
D357
22V
D360
1000P
C365
C364
0
L356
R231
NC
C127
30V
D354
30V
D353
30V
D352
D358
R232
C504
0
R508
1000P
C354
C502
C505
C501
R501
R505
R500
R503
R504
R507
R506
Q500
Q501
D501
VC
VA
VB
VCC
(1)
(2)
(3)(4) (5)
(6)
(7)
(8) (9)(10) (12)
(14)
(15) (16)
(17)
(11) (13)
Input
1 kHz TONE
-25 dBm at 600
TX Signal
RX Signal
6V
11.7V
120 mV
410 mV
25 mV
KX-TC1400B / KX-TC1400W
26
16 SCHEMATIC DIAGRAM (Handset)
16.1. Handset No. 1
MIC
SPEAKER
L201
L202
L203
D201
VSS
VDD
Q203
39K
R205
3.3K
R202
Q204
12K
R206
0.01 KB
C204
0.01 KB
C205
D203
100P JC
C203
SPM
SPP
MIC
RXDATA
ID
D202
10
R214
6.3V/330u
C226
22
R217
15K
R215
4700P
C214
15K
R211
0.1 KB
C210
82K
R234
0.1 KB
C247
27K
R232
27K
R233
4700P
C244
0.47u ZF
C236
0.1 ZF C221
1800P KBV
C220
0.47u ZF
C224
10K
R213
0.068 KB
C217
0.068 KB C223
0.01 KB
C216
10K
R218
0.01 KB
C212
0.01 KB
C219
56K
R209
100K
R210
6.3V/10u
C225
470P
C240
1 ZF
C232
1 ZF
C237
1 ZF
C235
0.1 ZF
C239
0.1 ZF
C242
0.01 KB
C218
0.1 KB
C213
TP209
10K
R220
100
R221
0.1 KB
C233
0
R229
2.2K
R208
0.01 KB
C208
100K
R235
8200P
C251
CN201
1
GND
2
MIC1
3
MIC2
4
SP2
5
SP1
33K
R228
0.1 KB
C231
CHARGE
CN202
1
BATT+
BATT+
2
BATT-
BATT-
RX
TX
15K
R240
100P JC
C238
C201
10K
R203
6.3V/47u
C209
TP212
C207
6.3V/10u
C206
D204
1 ZF
C234
R230
EXP
EVOL
VREF
COMP
ZAP
RESET
30ms
BATTLOW
3.
5
V
± 1%
Power Down
3.
2
2
V
± 2%
RXREG
3.
0
V±3%
36mA
TXREG
3.
0
V±3%
34mA
BGR
COMPANDER
REG
3.0V
SPAMP
Pre-AMP
Splatter
Filter
DATA-Filter
BOZ
IC201
1
SPVCC
2
SPGND
3
BTL
4
BOZSW
5
SPOUT
6
HSREF
7
SPREF
8
REF
9
SPSW
10
SPIN
11
EXPOUT
12
EV1
13
EV2
14
TXDET
15
GND1
16
VREF
17
SFOUT
18
SFIN
19
COMPOUT
20
COMPCONT
21
COMPDET
22
COMPIN
23
MICOUT
24
MIC1
25
MIC2
26
MICMUTE
27
RXSWOUT
28
TXREG
29
TXB
30
VCC1-2
31
VCC1-1
32
RXB
33
RXREG
34
/BATTLOW
35
/PWRDOWN
36
GND2
37
/RESET
38
ZMW
39
/TXPOWER
40
/RXPOWER
41
ZGND
42
PE
43
ZME
44
PDIN
45
BLIN
46
DOUT2
47
DIN2
48
DOUT1
49
DIN1
50
VCC2-2
51
VCC2-1
52
VREG
53
PREIN
54
PREOUT
55
EXPDET
56
SPMUTE
6800P
C228
33K
R224
220
R201
12
R204
Q202
Q201
33
R231
RINGER
R280
0
CHG(+)
CHG(C)
CHG(-)
J202
0.1 ZF
C202
0.1 ZF
C271
100K
R207
1K
R223
J203
R226
C222
C211
D205
NC
R222
R216
C215
D206
NC
0
R219
0
R212
Q205
R236
C246
C229
R225
R227
C230
CHG(+)
CHG(C)
CHG(-)
(1)
(2)
(3) (4) (5)
(6) (7) (8)
(9) (10)
(11)
(12) (13)
(14) (15)
(16) (17)
(18) (20) (22)
(19) (21)
(23)
NC
TX Signal
92 mV
22 mV
45 mV
6 mV
TX
INPUT
55 mV
3.9 V
RX Signal
KX-TC1400B / KX-TC1400W
27
16.2.
Handset
No.
2
100
R911
100
R910
1K
R901
0.1 ZF
C901
6.3V/220u
C905
10
R919
0.1 ZF
C262
2.2K
R254
1M
R916
18P JC
C907
18P JC
C906
10K
R274
C263
NC
100K
VR201
SQL
32KHz
X901
2.2K
R241
AF
D901
LED903
0
R271
0
R272
330K
R902
3
6
9
#
2
5
8
0
1
4
7
PROGRAM
KEY1
KEY2
PAUSE
1K
R914
330
R906
0.1 ZF
C904
33K
R251
0.1 KB
C259
MOD
1K
R921
100
R922
100
R920
1K
R915
RESET
8P DC
C268
0.1 KB
C902
D212
GND
ANT
50K
VR202
R904 680
LED902
RINGER
FLASH
LOUD
REDIAL
D913
D911
D914
TALK
CH
AUTO
DIRECT
4MHz
X902
IC901
PQVI9046G014
1
PLLLOCK
2
P11
3
P10
4
KR07
5
KR06
6
KR05
7
KR04
8
KR03
9
KR02
10
KR01
11
KR00
12
BEEP_CLK
13
IC
14
X2
15
X1
16
VSS
17
VDD
18
XT2
19
XT1
20
/RESET
21
BEEP_CNT
22
MIC_MUTE
23
ID
24
CHARGE
25
RXDATA
26
SQL
27
BAATLOW
28
PLLDATA
29
PLLCLK
30
PLLENA
31
TXPOWER
32
RXPOWER
33
POWERDOWN
34
L1_LED
35
INT'COM(L2)_LED
36
TALK_LED
37
BATTLOW_LED
38
VDD1
39
VSS1
40
SP_MUTE
41
KEYPAD_LED
42
VOL1
43
VOL2
44
TXDATA
IC202
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
5
OUTPUT
4
GND
3
INPUT
2
DET
1
VCC
Vdd
Vss
SO
SI
CLOCK
VPP
BL
PD
C280
C281
VR203
R281
R282
C282
C283
TP_TALK
100K
R260
RECHARGE
RFUNIT
PQLZ10005ZAM
1
AFIN
2
B+
3
RXPOW
4
PLLLOCK
5
PLLDATA
6
PLLCLOCK
7
PLLENA
8
TXPOW
9
GND
10
CARRIERSENS
11
AFOUT
12
RSSI
13
GND
14
ANT
R259
0
C270
L204
NC
C269
18n
R913
1M
R908
1M
100K
R905
R273
C908
C909
D912
LED904
Q901
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
LED908
R930
LED901
LED905
LED907
LED906
R903
R907
R909
R912
R917
R242
C253
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(20)
(22)
(19)
(21)
(23)
RX Signal
75 mV
150 mV
RX
(
1kHz TONE
6kHzdivi
6kHzdivi
50 mV
22 mV
3.5 V
32kHz
2.8 V
4MHz
TX Signal
KX-
TC1400B
/
KX-
TC1400W
28
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