Panasonic KX-NT321RU (serv.man2) Service Manual ▷ View online
33
KX-NT321RU
KX-NT321
RU MAIN No.1 (2/2)
(1)
(2)
(3)
(4)
(4)
(5)
(6)
(6)
(7)
(8)
(8)
(9)
(10)
(11)
(12)
(13)
(13)
(14)
7
8
11
10
9
C109
0.1/250V
C111
C107
D2
1
23
4
D1
1
23
4
C55
10/100V
C93
K0.022/16V
DG
DG
DG
DG
DG
DG
DG
DG
D5
200V/1A
T2
1
TD+
2
TCT
3
TD-
4
NC4
5
NC5
6
RD+
7
RCT
8
RD-
9
RX-
10
RXCT
11
RX+
12
NC12
13
NC13
14
TX-
15
TXCT
16
TX+
IC8
1
NC1
2
SW
3
BST
4
ISEN
5
SGND
6
RTN
7
NC7
8
NC8
9
FB
10
SS
11
RON/SD
12
VCC
13
VIN
14
NC14
C108
0.047/100V
JK2
1
TX+
2
TX-
3
RX+
4
4
5
5
6
RX-
7
7
8
8
L11
L10
L9
L8
DG
DG
DG
JK1
1
TX+
2
TX-
3
RX+
4
4
5
5
6
RX-
7
7
8
8
PoE+
PoE-
C104
0.1/250V
C88
K0.022/16V
C106
1000p/100V
C110
1000p/100V
C95
1000p/100V
DG
DG
DG
DG
DG
C102
Z0.1
Z0.1
C96
Z0.1
C97
100p
C98
100p
C90
K0.1
C89
K0.1
C100
100p
C101
100p
C99
Z0.1
C103
Z0.1
C91
K0.1
C92
K0.1
K0.1
C94
Z0.1 16V
DG
DG
T1
1
TD+
2
TCT
3
TD-
4
NC4
5
NC5
6
RD+
7
RCT
8
RD-
9
RX-
10
RXCT
11
RX+
12
NC12
13
NC13
14
TX-
15
TXCT
16
TX+
C105
1000p/100V
PHY3.3VA
PHY3.3VA
L4
0
0
DG_2
C54
2.2/100V
IC9
1
NC1
2
RCLASS
3
NC3
4
VIN
5
VOUT
6
PWRGD
7
NC7
8
GND
JK3
1
2
3
L6
NC
1
2
3
4
L7
NC
1
2
3
4
L16
NC
1
2
3
4
L17
NC
1
2
3
4
L21
0
L22
0
L25
NC
D14
NC
D12
NC
L24
NC
D15
NC
D13
NC
D11
NC
L23
NC
DG
IC5
1
Vout
2
Vin
3
NC
4
Vss
DG
L20
DG_2
L2
1
2
3
4
J3 0
J4 0
J6
0
J5 0
J7 0
J8
0
J9
0
J10
0
DG_2
L28
D3
90V1A
D4
90V
1A
IP2
3A
IP1
1A
L12
L13
L14
L15
C112
Z0.1/50V
DCIN+
DCIN-
R99
75
R82
49.9(1%)
49.9(1%)
R77
49.9(1%)
49.9(1%)
R84
100k
100k
R76
49.9(1%)
49.9(1%)
R93
68.1(1%)
R89
R86
R96
75
R87
R88
R73
NC
R74
10k
R98
75
R75
49.9(1%)
49.9(1%)
R90
R91
R95
75
R80
49.9(1%)
49.9(1%)
R79
49.9(1%)
49.9(1%)
R71
27k
27k
R85
R101
75
R100
75
R94
75
R97
75
R83
10k
R78
49.9(1%)
49.9(1%)
R81
49.9(1%)
49.9(1%)
R92
EtherJACK
(LAN)
(LAN)
EtherJACK
(PC)
(PC)
D
F
E
C
B
A
H
G
(6)
(11),(12)
(8),(9)
(14),(15)
(17),(18)
34
KX-NT321RU
10.3. Main No.2
KX-NT321
RU MAIN No.2 (1/2)
(1)
(2)
(3)
(4)
(5)
(5)
(6)
(7)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(8)
D
F
E
C
B
A
H
G
4
5
6
3
2
D[19]
D[18]
D[6]
D[23]
A[15]
A[9]
A[8]
D[16]
D[4]
A[3]
D[22]
A[16]
A[10]
A[12]
D[21]
A[6]
A[1]
A[7]
D[7]
D[3]
A[5]
A[11]
D[5]
D[17]
A[0]
A[15]
A[14]
A[13]
A[12]
A[11]
A[10]
A[9]
A[8]
A[7]
A[6]
A[5]
M1_TXEN
M1_TXCLK
DQM[3]
DQM[2]
DQM[1]
A[1]
A[2]
A[3]
A[4]
D[20]
D[15]
D[7]
D[14]
D[6]
D[7]
D[14]
D[6]
D[5]
D[13]
D[12]
D[4]
D[4]
D[11]
D[3]
D[10]
D[2]
D[3]
D[10]
D[2]
D[0]
D[15]
D[14]
D[13]
D[13]
D[12]
D[11]
D[11]
D[9]
D[10]
D[8]
D[31]
D[30]
D[28]
D[27]
D[27]
D[26]
D[25]
D[25]
D[0]
D[1]
D[2]
D[2]
D[29]
D[9]
D[1]
D[8]
D[1]
D[8]
A[9]
A[3]
A[7]
A[6]
A[6]
A[18]
A[4]
A[5]
A[8]
A[13]
A[14]
A[17]
D[24]
DQM[2]
A[4]
SDRAM_nWE
FLASH_nCS0
DQM[0]
DQM[0]
A[2]
A[1]
A[13]
A[14]
A[10]
A[14]
A[10]
A[0]
A[11]
A[19]
A[21]
A[20]
A[22]
A[2]
A[16]
FLASH_nWE
DQM[1]
DQM[3]
SDRAM_nCS
SDRAM_nRAS
nRESET
SDRAM_nCAS
KEY_OUT[6]
FLASH_nMRD
D3.3V_2
D3.3V
DG
D3.3V_2
D3.3V_2
DG
DG
M1_CRS
M1_RXD[3-0]
M1_MDIO
M1_RXDV
M1_TXCLK
D3.3V
M1_TXD[3-0]
M1_TXEN
M1_MDC
M1_COL
M1_RXCLK
M1_RXER
C9
18p
C10
18p
D3.3V
D3.3V
DG
D3.3V_2
DG
DG
DG
DG
DG
DG
DG
D3.3V
DG
D3.3V_2
D3.3V_2
D3.3V_2
D3.3V_2
D3.3V_2
D3.3V_2
DG
DG
DG
D3.3V
DG
D3.3V
D3.3V_2
DG
DG
DG
DG
DG
D3.3V
D3.3V_2
IC2
9
A19
16
A18
17
A17
18
A7
19
A6
20
A5
21
A4
22
A3
23
A2
24
A1
25
A0
26
CE
27
VSS27
28
OE
29
DQ0
30
DQ8
31
DQ1
32
DQ9
33
DQ2
34
DQ10
35
DQ3
36
DQ11
37
VCC
38
DQ4
39
DQ12
40
DQ5
41
DQ13
42
DQ6
43
DQ14
44
DQ7
45
DQ15/A-1
46
VSS46
47
BYTE
48
A16
1
A15
2
A14
3
A13
4
A12
5
A11
6
A10
7
A9
8
A8
11
WE
12
RESET
10
A20
13
NC13
14
WP#/ACC
15
RY/BY
L1
DG
D3.3V
IC4
1
VOUT
2
VIN
3
NC
4
VSS
DG
D3.3V
DG
D1.5V
X1
8.192MHz
RA2
33
RA1
33
RA3
33
RA6
33
RA5
33
RA7
33
D3.3V
C8
K0.01
K0.01
C2
Z0.1
C6
Z0.1
C13
100p
C17
100p
C11
Z0.1
C15
Z0.1
C14
K0.01
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
DG
D1.5V
C18 100p
DG
C19 Z0.1
C16
Z10
C23
Z10
C75
Z0.1
C81
Z0.1
Z0.1
DG
DG
IC3
23
A11(BA1)
24
A10/AP
25
A0
26
A1
27
A2
28
DQM2(bit23-16)
29
VCC29
30
NC30
31
DQ16
32
VSSQ32
33
DQ17
34
DQ18
35
VCCQ35
36
DQ19
37
DQ20
38
VSSQ38
39
DQ21
40
DQ22
41
VCCQ41
42
DQ23
43
VCC43
1
VCC1
2
DQ0
3
VCCQ3
4
DQ1
5
DQ2
6
VSSQ6
7
DQ3
8
DQ4
9
VCCQ9
10
DQ5
11
DQ6
12
VSSQ12
13
DQ7
14
NC14
15
VCC15
16
DQM0(bit7-0)
17
#WE
18
#CAS
19
#RAS
20
#CS
21
NC21
22
A12(BA0)
45 DQ24
46 VSSQ46
47 DQ25
48 DQ26
49 VCCQ49
50 DQ27
51 DQ28
52 VSSQ52
53 DQ29
54 DQ30
55 VCCQ55
56 DQ31
57 NC57
58
VSS58
59
DQM3(bit31-24)
60 A3
61 A4
62 A5
63 A6
64 A7
65 A8
66 A9
67 CKE
68 CLK
69 NC69
70 NC70
71 DQM1(bit15-8)
72 VSS72
73 NC73
74 DQ8
75 VCCQ75
76 DQ9
77 DQ10
78 VSSQ78
79 DQ11
80 DQ12
81 VCCQ81
82 DQ13
83 DQ14
84 VSSQ84
85 DQ15
86
VSS86
44 VSS44
C5
Z0.1
C7
K0.1
C1
K0.1
C4
K0.1
C3
K0.1
K0.1
C87
Z0.1
Z0.1
C71
220u/6.3V
C12
K0.22
ST1
RA34
10k
J12
0
RA8
33
DG
FIL2
NC
1
2
3
KEY_OUT[6-0]
R8
33
R11
33k
R1
33k
R9
33k
R16
150
R17
22
R18
33
R5
33k
R15
1M
R7
33k
R12
33k
R3
33k
R19
33k
R6
33k
R2
33k
R10
33k
R14 4.7k
R4
33k
R37
33
R13
NC
(1)
(2)
(3)
35
KX-NT321RU
KX-NT321
RU MAIN No.2 (2/2)
(1)
(2)
(3)
(4)
(5)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
7
8
11
10
9
M1_CRS
M1_MDIO
M1_MDC
M1_RXDV
M1_RXCLK
Vref
M1_COL
M1_RXD[0]
M1_RXD[1]
M1_RXD[2]
M1_RXD[3]
M2_TXD[3]
M2_TXD[1]
M2_TXD[2]
M2_TXD[0]
M2_RXD[3]
M2_RXD[0]
M2_RXD[2] M2_RXD[1]
M2_TXEN
M2_CRS M2_COL M2_MDC M2_MDIO
M2_TXCLK
A[17] A[18] A[19] A[20] A[21] A[22]
D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7] D[8] D[9]
D[10] D[11] D[12] D[13] D[14] D[15]
D[16] D[17] D[18] D[19] D[20] D[21]
D[24] D[25] D[26] D[27] D[28] D[29] D[30] D[31]
D[23]
D[22]
D1.5V
M1_RXER
KEY_OUT[6-0]
KEY_IN[4] KEY_IN[3]
KEY_OUT[4]
KEY_IN[2] KEY_IN[1] KEY_IN[0]
KEY_OUT[3] KEY_OUT[2] KEY_OUT[1] KEY_OUT[0]
KEY_IN[5]
LCD_CONT2
LCD_CONT1
SIDE_TONE
HEADSET
LCD_DATA
LCD_STB
LCD_SCK
KEY_OUT[5]
M1_TXD[1]
M1_TXD[3] M1_TXD[2]
M1_TXD[0]
DG
BK_LIT
MIC_IN
HS_IN
HS_IN
MIC_SW
SP_OUT
HS_OUT
D3.3V
DG
AG
D3.3V
D3.3V
D3.3V
DG
DG
C40
Z10
Z10
DG
DG
PHY_nRST_2
D1.5V
M2_MDIO
M2_RXCLK
M2_CRS
M2_TXCLK
M2_RXER
M2_MDC
M2_TXEN
M2_RXDV
M2_TXD[3-0]
M2_RXD[3-0]
M2_COL
C33
Z10
DG
RA23
33
RA9
33
RA10
33
RA11
NC
DG
D3.3V
D1.5V
A3.3V
C30
100p
C39
100p
C42
100p
100p
C31
100p
C20
Z0.1
C49
Z0.1
C46
NC
C45
K0.01
D1.5V
IC1
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
D3.3V
DG
DG
D3.3V
DG
D1.5V
C22
100p
A3.3V
AG
C28
100p
C35
100p
D1.5V
DG
DG
C24
Z0.1
DG
HT1
AG
DG
D1.5V
C21
Z0.1
C26
100p
C25
Z0.1
C64
100p
C36
Z0.1
Z0.1
C29
Z0.1
CN3
NC
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
RA12
22
RA20
22
RA16
22
RA14
22
RA13
22
RA18
22
RA15
22
RA22
22
C82
Z0.1
DG
C34
220u/6.3V
C41
K0.22
RA17
10k
D3.3V
D3.3V
MUTE_SP1
KEY_IN[5-0]
RA19
10k
MUTE_SP0
KEY_OUT[6-0]
RA21
10k
MUTE_SP2
9
10
8
D3.3V
12
13
11
LED_CO2_G
DC_ALARM
Q7
NC
E
C
B
D5.0V
Q6
1
2
3
4
5
LED_DIAL
LED_CO1_G
D3.3V
LED_CO2_R
LED_SP
D5.0V
1
2
3
C32
Z0.1u
Z0.1u
C37
NC
NC
IC12
4
5
6
DG
LED_ICM
D5.0V
C38
Z0.1u
DG
CN6
1 Vss
2 Vdd
3 V0
4 RS/STB
5 SCK/E
5 SCK/E
6 DATA/RW
C27
Z0.1u
LED_ANS
LED_CO1_R
CN2
1
2
2
1
2
2
DG
DG
LED_MES_R
PHY_nIRQ1
IC12
14
7
PHY_nIRQ2
SP_LCK
SP_DATA
SP_CLK
ST6
ST5
ST4
ST3
nG722
PHY_nRST_1
ST0
D3.3V
DG
D5.0V
DG
D3.3V
RA4
10k
D3.3V
RA27
33
DG
RA35
10k
RA26
10k
DG
D3.3V
HT2
L27
RA36
180
DG
DG
AG
R38
10k
R33
NC
R24
33
R40
NC
R35
NC
R20
33
R39
NC
R23
33
R43
18k
R36
150
R25
33
R26
33k
R30
NC
R44
2.2k
2.2k
R27
33k
R41
330
R22
33
R31
NC
R29
33k
R21
NC
R34
33k
33k
R32
33k
R42
2.7k
R28
33k
IC11
1
VIN
2
VSS
3
CE
4
NC
5
VOUT
D
F
E
C
B
A
H
G
to JTAG
to Back_Light
For NT321NE --- [mount;R38], [not mount;R35,R39,Q7,C37,R40,CN2]
For NT321 --- [mount;R35,R39,C37,R40,CN2], [not mount;R38,Q7]
For NT321 --- [mount;R35,R39,C37,R40,CN2], [not mount;R38,Q7]
NC
(4)
36
KX-NT321RU
10.4. Main No.3
KX-NT321
RU MAIN No.3 (1/2)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
+
-
+-
Vref
CC
DET
C
E
B
A
D
F
3
2
4
A3.3V
IC20
1
VOUT1
2
VIN1
3
Bypass
4
GND
5
SHUTDOWN
6
VIN2
7
VOUT2
8
VDD
AG
AG
AG
A3.3V
C327
33p
AG
AG
A3.3V
AG
D3.3V
C324
Z10
C333
Z22
Z22
IC23
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
AG
MUTE_SP0
IC21
1
SHUTDOWN
2
BYPASS
3
+IN
4
-IN
5
Vo1
6
VDD
7
GND
8
Vo2
AG
HS_IN
AG
C331
330p
SP_OUT
AG
AG
MUTE_SP1
A3.3V
AG
HS_OUT
nG722
MIC_IN
MIC_SW
AG
AG
A3.3V
C300
K0.1
C302
K1
C301
K1
C339
K0.01
C325
K0.01
C309
K0.01
C311
NC
C338
1000p
IC22
1
2
3
4
5
6
7
8
AG
IC28
9
S2
4
CN
3
C1
5
C0
IC28
11
S0
14
AN
13
A1
12
A0
C307
K0.022
C329
33p
C328
330p
C362
220/6.3V
C332
K0.1
C313
K0.1
C317 330p
C366
0
C304
820p
C322
3300p
C320
K0.018
AG
C334
1500p
nG722
C326
K0.1
C312
120p
C303
K1
C337 820p
C335 330p
C306
K0.018
C318 NC
C367
0
IC29
5
A
1
COM
6
Y2
7
Y1
Q12
E
C
B
nG722
AG
C316
K0.015
Q10
E
C
B
C365 33p
R302
47k
R300
10k
R312
10k
R318
10k
R319
20k
R331 47k
R316
150k
R351
270k
R320
10k
R329 180k
R321
10k
R325
3.3
R326
1k
R307
1.8k
R304
27k
R328
33k
R309
300k
300k
R327
2.2k
R330 33k
R303
68k
R306
2.2k
R352
270k
R310
1.8k
R317
4.7k
R315
15k
H:Normal
L:G.722
L:G.722
L:OFF
H:MUTE
H:MUTE
L:OFF
H:MUTE
H:MUTE
L:Handset
H:Headset
H:Headset
Click on the first or last page to see other KX-NT321RU (serv.man2) service manuals if exist.