DOWNLOAD Panasonic KX-NT400RU Service Manual ↓ Size: 4.33 MB | Pages: 108 in PDF or view online for FREE

Model
KX-NT400RU
Pages
108
Size
4.33 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / IP PROPRIETARY TELEPHONE
File
kx-nt400ru.pdf
Date
PREV: Panasonic KX-NT366RU / KX-NT366RU-B (serv.man2) Service Manual / Supplement

Panasonic KX-NT400RU Service Manual ▷ View online

53
KX-NT400RU
(6)
(8)
(10)
(12)
(14)
(18)
(20)
(22)
(24)
(26)
(29)
(31)
(33)
(36)
(38)
(40)
(42)
(44)
(46)
(1)
(2)
(3)
(4)
(5)
(7)
(9)
(11)
(13)
(16)
(15)
(17)
(21)
(23)
(25)
(27)
(28)
(30)
(32)
(34)
(35)
(37)
(39)
(41)
(43)
(45)
(47)
(48)
(49)
(50)
(51)
(19)
KX-NT400RU : MAIN BOARD No.2 (2/2)
D
F
E
C
B
A
H
G
7
6
8
11
10
9
A[17]
D[9]
D[28]
M2_TXD[1]
D[5]
A[20]
D[16]
M1_TXD[1]
M1_TXD[2]
D[21]
D[6]
D[2]
M2_RXD[1]
D[14]
D[25]
M2_TXD[2]
D[18]
M2_RXD[0]
A[21]
M1_RXD[1]
D[31]
D[19]
D[7]
D[11]
M2_RXD[2]
M1_RXD[2]
M2_TXD[3]
D[20]
D[13]
D[12]
D[0]
D[8]
M1_TXD[3]
M1_TXD[0]
D[30]
D[3]
D[22]
D[1]
M2_TXD[0]
A[22]
M1_RXD[0]
D[27]
D[4]
M1_RXD[3]
D[24]
D[15]
M2_RXD[3]
D[23]
D[10]
A[19]
D[29]
D[17]
A[18]
D[26]
M1_RXD[3]
M1_RXD[2]
M1_RXD[1]
M1_RXD[0]
M1_TXD[0]
M1_TXD[1]
M1_TXD[2]
M1_TXD[3]
MUTE_SP2
003:7B
DG
M2_MDC
001:3B
C233
220u/6.3V
RA217
RA209
33
AG
M2_RXDV
001:3A
DG
C216
Z10
[2125]
DG
TXD
004:9A
PCMSYNC1 004:10C
RA216
RA212
M2_COL
001:3A
VCC_A33
DG
PHY_nRST_2
001:3A
TXD1
006:4E
RA214
RA215
DG
DG
DG
M2_TXCLK
001:3A
DG
VCC_D33
RA219
22
22
22
22
22
22
22
22
MUTE_SP1
003:4B
DG
SIDE_TONE
003:2B
V CC_CORE
SP_OUT 003:1E
DG
C239
Z10
[2125]
DG
DG
D G
RA211
NC
SCLK_SUB 004:9A
VCC_D33
VCC_D33
RA220
33
PCMIN
004:10C
DG
VCC_CORE
VCC_D33
C232
Z
10
[2125]
nRTS1
006:4E
DG
DG
RXD_SUB 004:9A
HEADSET
003:6D
VCC_D3 3
DG
MIC_IN
003:1E
AG
MUTE_SP0
003:2E
HS_OUT 003:1B
DG
VCC_D33
VCC_CORE
RXD1
006:3E
VCC_D33
DG
DG
VCC_ C ORE
nDSR1
006:3E
DG
RA208
33
M2_TXD[3-0]
001:3A
DG
VCC_D33
DG
DG
nDTR1
006:4E
HS_IN
003:1C
VCC_D33
PCMOUT
004:10C
DC_ALARM
001:4H;004:9A
M2_RXCLK
001:3A
nCTS1
006:3E
DG
IC1
1 DGND1
2 A15
3 A14
4 A13
5 A12
6 A11
7 A10
8 A9
9 A8
10 A7
11 A6
12 A5
13 NC13
14 TEST3
15 TEST2
16 TEST1
17 NC17
18 PVDD1.8_18
19 PGND19
20 VCNT1
21 nWAIT/PB12
22 nRSTOUT
23 TEST0
24 ROMBUSW
25 A4
26 A3
27 A2
28 A1
29 A0
30 nMWRL
31 nMWRH
32 nMRD
33 nRESET
34 XTAL1
35 XTAL2
36 DVDD3.3_36
37 DGND37
38 nCS0
39 nCS1/PD4
40 DQM3
41 DQM2
42 nDRCS1
43 nDRCS0
44 nRAS
45 nCAS
46 DRCLK
47 DRWE
48 DQM1
49 DQM0
50 M1_TXEN
51 M1_TXCLK
52 M1_TXD3
53 M1_TXD2
54 DVDD1.8_54
55
DGND55
56
M1_TXD1
57
M1_TXD0
58
NC58
59
M1_RXCLK
60
M1_RXDV
61
M1_RXER
62
M1_RXD3
63
M1_RXD2
64
M1_RXD1
65
M1_RXD0
66
M1_CRS
67
M1_COL
68
M1_MDC
69
M1_MDIO
70
NC70
71
M2_TXEN
72
DVDD3.3_72
73
DGND73
74
M2_TXCLK
75
M2_TXD3
76
M2_TXD2
77
M2_TXD1
78
M2_TXD0
79
M2_RXCLK
80
M2_RXDV
81
M2_RXER
82
M2_RXD3
83
M2_RXD2
84
M2_RXD1
85
M2_RXD0
86
M2_CRS
87
M2_COL
88
M2_MDC
89
M2_MDIO
90
DVDD1.8_90
91
DGND91
92
BIGEND
93
DIVCK/PB11
94
PCMIN/PB10
95
PCMCLK/PB9
96
PCMSYNC1/PB8
97
PCMSYNC2/PB7
98
PCMOUT/PB6
99
XDACK/PB5
100
DSOD/PB4
101
DWR/PB3
102
DCK/PB2
103
DSL/PB1
104
DSID/PB0
105
DBG15/PA15
106
DBG14/PA14
107
DBG13/PA13
108
DVDD3.3_108
109
DGND109
110
AVDD3.3_110
111
AGND111
112
HSIN
113
MICIN
114
VREF
115
HSOUT
116
SPOUT
117
AVDD3.3_117
118
AGND118
119
NC119
120
DBG12/PA12
121
DBG11/PA11
122
DBG10/PA10
123
DBG9/PA9
124
DBG8/PA8
125
NC125
126
DVDD3.3_126
127
DGND127
128
DBG7/PA7
129
DBG6/PA6
130
DBG5/PA5
131
DBG4/PA4
132
DBG3/PA3
133
DBG2/PA2
134
SPOUT_NS/PA1
135
HSOUT_NS/PA0
136
SCK/PC15
137
SDI/PD0
138
SDO/PC14
139
IRQ3/PD3
140
IRQ2/PD2
141
IRQ1/PD1
142
nCTS2/PC0
143
nDSR2/PC1
144
PVDD1.8_144
145
PGND145
146
VCNT2
147
nCS2/PD5
148
nCS3/PD6
149
nRTS2/PC8
150
nDTR2/PC9
151
EXCK2/PC2
152
TXD2/PC10
153
RXD2/PC3
154
TRSTIN
155
RTCK
156
TCK
157
TMS
158
TDI
159
TDO
160
D31
161
D30
162
DVDD1.8_162
163
DGND163
164
D29
165
D28
166
D27
167
D26
168
D25
169
D24
170
D23
171
D22
172
NC172
173
D21
174
D20
175
D19
176
D18
177
D17
178
D16
179
NC179
180
DVDD3.3_180
181
DGND181
182
D15
183
D14
184
D13
185
D12
186
D11
187
D10
188
D9
189
D8
190
D7
191
D6
192
D5
193
D4
194
D3
195
D2
196
D1
197
D0
198
DVDD1.8_198
199
DGND199
200
nCTS1/PC4
201
nDSR1/PC5
202
nRTS1/PC11
203
nDTR1/PC12
204
EXCK1/PC6
205
TXD1/PC13
206
RXD1/PC7
207
A24
208
A23
209
A22
210
A21
211
A20
212
A19
213
A18
214
A17
215
A16
216
DVDD216
RA213
VCC_D33
MIC_SW
003:4C
DG
DG
M2_TXEN
001:3A
AG
DG
M2_MDIO
001:3B
VCC_D33
VCC_CORE
+
-
DG
DG
RA218
M2_RXD[3-0]
001:3A
DG
RESET
004:9A
IRQ2
006:3E
M2_CRS
001:3A
VCC_A3 3
DG
DG
PCMCLK
004:10C
RA210
180
D G
DG
nG722
003:2D;003:2F;003:3C;003:6B;003:6A
M1_RXD[0] 006:3E
M1_RXD[1] 006:3E
M1_RXD[2] 006:3E
M1_RXD[3] 006:3E
M1_RXDV
006:3E
M1_RXCLK 006:3D
M1_TXD[0] 006:4F
M1_TXD[1] 006:4F
M1_TXD[2] 006:4F
M1_TXD[3] 006:4F
M1_TXEN
006:4F
NRSTOUT
005:12A
R226
470
R223
33
R250
33k
R234 33k
R220
33
R233 33k
R227
NC
R22933k
R224 33k
R231
150
R225
470
R221
NC
R222
33
R235
33k
R228
NC
R230 33k
R213
NC
R286
22
IRQ3
006:3E
R239 33k
R288
10k
VCC_D33
DG
DSOD
006:4F
RA221
33k
R289
10k
R291
10k
R246
33k
R247
33k
VCC_D33
R290 33k
C222
100p
C234
100p
C243
100p
C217
100p
C218 100p
C230
100p
C226
100p
C241
100p
C227
100p
C231
100p
C238
100p
C229
100p
C248
220p
C242
K0.1
C228
K0.1
C224
K0.1
C 220
K 0. 1
C236
K0.1
C221
K0.1
C225
K0.1
C219 K0.1
R236 33k
R245 33
R287 33k
HT1
ST3
nG722
ST0
ST6
HT2
ST1
ST4
ST5
CN3
NC
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
L202
C240
K0.22
PCMCLK
R252
180
C235
K1
C237
K1
CN3
to JTAG
(2)
(3)
(27)
54
KX-NT400RU
10.1.3. Analog Interface
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
KX-NT400RU : MAIN BOARD No.3 (1/2)
Vref
CC
DET
+
+
-
-
C
E
B
A
D
F
3
4
2
1
C303
K1
HS_OUT
002:10E
C317
3300p
nG722
AG
VCC_A33
AG
C352
+
-
220u/6.3V
Q304
E
C
B
AG
AG
1
2
3
4
5
+
-
6
7
8
SP_OUT
002:10E
AG
C325
330p
5
A
1
COM
6
Y2
7
Y1
VCC_A33
C322
33p
MUTE_SP0
002:10F
C304
K1
C324
33p
C323
330p
MIC_SW
002:10E
HS_IN
002:10F
MUTE_SP1
002:10F
11
S0
14
AN
13
A1
12
A0
AG
AG
9
S2
4
CN
3
C1
5
C0
1 SHUTDOWN
2
BYPASS
3 +IN
4 -IN
5
Vo1
6
VDD
7
GND
8
Vo2
C305
820p
nG722
AG
AC97_OUT
006:8G
Q307
E
C
B
AG
SIDE_TONE
002:10E
R302 47k
R309
10k
R319
3.3
R303
68k
R343
NC
R304
27k
R308
1.8k
R301
10k
1
2
4
MUTE_CE
006:3F
C320
K0.01
C301
K0.1
C312
K0.015
SIDE_TONE
C321
K0.1
R315
10k
C319
Z10
[2125]
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
C328
4700p
AG
MIC_IN
002:10F
C308 K0.01
C302
K1
nG722
R314
4.7k
VCC_A33
AG
VCC_A33
R307
300k
Q301
E
C
B
AG
R318
10k
R317
10k
C310
47p
AG
R316
20k
VCC_A33
R320
1k
R321
2.2k
C327
Z22
[2125]
AG
MIC_SW
C363 100p
AG
C365
100p
AG
C309
100p
C364
33p
AG
C366
100p
C367
K0.01
DG
C368
K0.01
AG
C307
K0.022
R312
8.2K
C354
NC
C313
33p
R305
33K
R345
47K
C306
K0.01
C311
K0.15
C356
K0.01
R306
8.2K
R344
100K
R313
180K
C353
100p
C314
330p
C355
5600p
L:OFF
H:MUTE
H:Normal
L:G.722
L:OFF
H:MUTE
L:Handset
H:Headset
L:IC22_ON
H:IC22_OFF
IC22
IC29
IC28
IC28
IC21
IC30
IC23
55
KX-NT400RU
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
KX-NT400RU : MAIN BOARD No.3 (2/2)
+
-
+-
4
6
5
8
7
AG
C341
K0.082
MUTE_SP2
002:11D
VCC_A33
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
16
6
7
8
C340
K0.082
AG
C338
330p
C335
330p
L305
C318
K0.22
AG
C339
Z10
[2125]
C316
K0.22
Q302
E
C
B
VCC_A33
nG722
C342
K0.082
CN4
1
2
AG
AG
VCC_A33
C334
270p
AG
VCC_A33
AG
L303
AG
AG
AG
AG
C330
820p
AG
nG722
VCC_A33
1
VOUT1
2
VIN1
3
Bypass
4
GND
5
SHUTDOWN
6
VIN2
7
VOUT2
8
VDD
AG
Q305
E
C
B
AG
VCC_A33
AG
C315
K0.018
AG
C329
330p
AG
AG
AG
8
4
2
3
L304
C336
K1
L306
VCC_A33
10
S1
15
BN
1
B1
2
B0
AG
HS_MIC-
001:11H
HS_MIC+
001:11H
HS_SP
001:11H
HD_AG
001:11H
HD_SP
001:11H
HD_MIC 001:11H
CN7
NC
1
2
CN8
NC
1
2
HS_AG
001:11H
AG
Q303
E
C
B
R339
470
R329
18k
R333
10k
R335
1k
R340
150
R327
160k
R331
10k
R338
2.2k
R311
10k
R326
160k
R334
1k
R310
10k
R342
2.7k
R332
10k
R336
1k
R330
12k
R328 160k
R325
47k
R324
33k
R323
180k
R322
33k
R337
1.8k
L308
L309
L301
5
3
AG
C357
100p
C358
100p
C346
1000p
C359
1000p
C349
1000p
C345
1000p
C332
K0.01
C347
K0.01
C348
K0.01
C333
K0.01
C351
K0.1
C350
K0.1
C326
K0.1
C360
K0.1
C344
Z22
[2125]
C343
Z22
[2125]
SP3P
SP3M
MUTE_SP2
SP_MUTE1
HEADSET
002:10E
VCC_A33
AG
C337
K10/10V
[2125]
L311
0
L310
0
MIC3
C331
1000p
AG
MIC1+
SP1
MIC1-
SP2_2
MIC2_2
C361 100p
C362
100p
AG
Q306
E
C
B
R341
100k
R346
100K
VCC_A33
CN5
1
+
-
+
-
2
L302 0
L307 0
C369
100p
AG
C370
1000p
C
E
B
A
D
F
to SP
L:OFF
H:MUTE
L:NC
H:Headset DET
to MIC
IC24
IC28
IC20
IC29
IC28
IC30
56
KX-NT400RU
10.1.4. SUB-CPU , LED , KEY SCAN , Bluetooth Interface
(1)
(2)
(4)
(6)
(3)
(5)
(7)
(9)
(11)
(13)
(15)
(17)
(19)
(21)
(8)
(10)
(12)
(14)
(16)
(18)
(20)
KX-NT400RU : MAIN BOARD No.4 (1/2)
D
F
E
C
B
A
G
4
5
7
6
3
2
R_LED[6-2]
KEYIN[8-1]
C_LED[10-9]
KEYIN[8]
KEYIN[7]
KEYIN[6]
KEYIN[5]
KEYIN[3]
KEYIN[1]
C_LED[9]
R_LED[2]
R_LED[3]
R_LED[4]
R_LED[5]
R_LED[6]
KEYIN[1]
KEYIN[2]
KEYIN[3]
KEYIN[4]
KEYIN[5]
KEYIN[6]
KEYIN[7]
KEYIN[8]
R_LED[4]
R_LED[5]
R_LED[6]
C_LED[10]
C_LED[9]
KEYIN[4]
R_LED[2]
R_LED[3]
C_LED[10]
KEYIN[2]
DG
DG
DG
DG
LED403
SPPHONE
DG
DG
DG
VCC_D33
DG
VCC_D33
DG
Q401
1
2
3
4
5
LED401
MW
1
2
3
4
C424
NC
C423
NC
LED402
MW
1
2
3
4
VCC_D33
RA401
1k
RA402
1k
RA403
33
RA404
33k
DG
DG
Q403
4
3
5
1
6
2
Q402
4
3
5
1
6
2
IC4
R404
33k
R401
1.2k
R403
33
R407
33k
R409
33k
R420
15
R424
15
R402
33k
SW422
HOOK
C401
K0.1
C427
K0.1
Q404
R410
47
R411
47
SW406
6
SW405
5
SW408
8
SW409
9
SW404
4
SW407
7
SW415
SPPHONE
SW414
HOLD
SW419
LEFT
SW418
DOWN
SW403
3
SW401
1
SW410
SW412
#
SW402
2
SW411
0
SW413
TRANS
SW417
UP
SW421
ENTER
SW416
CANCEL
SW420
RIGHT
R
G
R
R
G
1
X1
2
X2
3
VSS
4
OSC2
5
OSC1
6
TEST
7
VCC
8
RES
9
P20
10
SCK1
11
SI1
12
SO1
13
SCK3
14
RXD
15
TXD
16
P27
17
P17
18
IRQ2
19
IRQ1
20
P14
21
P13
22
P12
23
P11
24
P10
25
PA3
26
PA2
27
PA1
28
P50
29
P51
30
P52
31
P53
32
P54
33 P55
34 P56
35 P57
36 P60
37 P61
38 P62
39 P63
40 P64
41 P65
42 P66
43 P67
44 P70
45 P71
46 P72
47 P73
48 P74
49
P75
50
P76
51
P77
52
P80
53
P81
54
P82
55
P83
56
P84
57
P85
58
P86
59
P87
60
TONED
61
VTref
62
AN7
63
AN6
64
CVCC
(30)
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