DOWNLOAD Panasonic KX-NT265RU Service Manual ↓ Size: 1.72 MB | Pages: 52 in PDF or view online for FREE

Model
KX-NT265RU
Pages
52
Size
1.72 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / IP PROPRIETARY TELEPHONE
File
kx-nt265ru.pdf
Date
PREV: Panasonic KX-NT136RU Service Manual

Panasonic KX-NT265RU Service Manual ▷ View online

KX-NT265RU  VoIP/LCD block(2/2)
(1)
(2)
(3)
(4)
(6)
(8)
(10)
(12)
(14)
(16)
(18)
(19)
(21)
(23)
(25)
(27)
(29)
(30)
(32)
(34)
(35)
(37)
(38)
(5)
(7)
(9)
(11)
(13)
(15)
(17)
(20)
(22)
(24)
(26)
(28)
(31)
(33)
(36)
HANDSET 
HANDSET 
HEADSET 
HEADSET 
SP PHONE 
SP PHONE 
AG
M1_CRS
LED_DIAL
M1_RXD[3-0]
DG
KEY_IN[5-0]
LED_CO1_R
SP_CLK
D3.3V
M1_MDIO
DG
SP_DATA
M1_RXDV
LED_CO2_G
M1_TXCLK
MUTE_SP0
SP_LCK
D3.3V
DG
M1_TXD[3-0]
DC_ALARM
M1_TXEN
M1_MDC
M1_COL
MUTE_SP1
MIC_IN
M1_RXCLK
LED_MES_R
D3.3V
PHY_nRST
M1_RXER
LED_ANS
P1.8V
HS_IN
KEY_OUT[5-0]
LED_ICM
DG
LED_SP
MIC_SW
SP_OUT
HS_OUT
A3.3V
R36
150
C34
Z0.22u
R44
2.2k
R25
10k
R23
33
R24
33
RA7
33
R19
10k
RA3
33
RA4
33
RA5
33
D3.3V
RA12
22
RA13
22
RA14
22
RA15
22
RA16
22
RA17
22
RA18
22
RA19
22
R18 33
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
AG
AG
AG
AG
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D1.8V
D1.8V
D1.8V
D1.8V
DG
R27
10k
DG
DG
DG
DG
DG
DG
RA8
33
RA2410k
RA933
R21
33
R22
NC
CN5
1 Vss
2 Vdd
3 V0
4 RS/STB
5 SCK/E
6 DATA/RW
C31
Z10u
RA23
NC
R30
NC
R31
NC
DG
D3.3V
Q1
NC
E
C
B
R45
NC
RA26
10k
DG
D5.0V
Q6
1
2
3
4
5 R42
2.7k
R41
330
DG
R43
18k
12
13
11
IC12
14
7
D5.0V
DG
D5.0V
RA27
1k
PHY_nIRQ
RA6
10k
LED_CO1_G
LED_CO2_R
DG
A3.3V
DG
IC12
4
5
6
9
10
8
HSOUTNS
RA20
10k
D3.3V
D3.3V
R40
10k
R35
0
DG
RA21
10k
RA22
10k
D3.3V
R34
10k
C33
Z1u
PHY_nPD
ST3
ST5
ST4
ST6
HT1
ST1
HT2
ST0
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_RXD
V
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
D
VDD3.3_72
73
DGND73
74
M2_TXCLK
75
M2_TXD3
76
M2_TXD2
77
M2_TXD1
78
M2_TXD0
79
M2_RXCLK
80
M2_RXD
V
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
D
VDD1.8_90
91
DGND91
92
BIGEND
93
DIVCK/PB11
94
PCMIN/PB10
95
PCMCLK/PB9
96
PCMSYNC1/PB8
97
PCMSYNC2/PB7
98
PCMOUT/PB6
99
XD
A
CK/PB5
100
DSOD/PB4
101
D
WR/PB3
102
DCK/PB2
103
DSL/PB1
104
DSID/PB0
105
DBG15/P
A15
106
DBG14/P
A14
107
DBG13/P
A13
108
D
VDD3.3_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
D
VDD3.3_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
D
VDD1.8_198
199
DGND199
200
nCTS1/PC4
201
nDSR1/PC5
202
nR
TS1/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
D
VDD216
1
2
3
DG
IC20
NC
1
NC
2
IN
3 GND
4
OUT
5
VCC
DG
D3.3V
DG
DG
DG
CN2
NC
1 1
2 2
D3.3V
R28
10k
CN1
NC
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
C20 Z0.1u
C36
Z0.1u
C27
Z0.1u
C24
Z0.1u
C37
NC
C23
Z0.1u
C30
Z0.1u
C28
Z0.1u
C29
Z0.1u
C16
K0.01u
C26
Z0.1u
C35
Z0.1u
C21
Z0.1u
C19
Z0.1u
C38
Z0.1u
C17
Z0.1u
C25
Z0.1u
C18
Z0.1u
C32
100p
MUTE_SP2
C40
Z0.1u
DG
C39
Z0.1u
DG
AG
C41
Z0.1u
DG
C45
1000p
C46
1000p
C48
Z10u
C47
Z10u
RA1039
A[22]
A[21]
A[19]
A[18]
A[17]
M1_TXD[0]
M1_TXD[1]
M1_TXD[2]
M1_TXD[3]
D[7]
D[6]
D[5]
D[3]
D[2]
D[4]
D[1]
D[0]
D[14]
D[9]
D[8]
D[15]
D[13]
D[12]
D[10] D[11]
D[20]
D[17]
D[19]
D[21]
D[24]
D[18]
D[25] D[26]
D[16]
D[22] D[23]
D[27]
D[31]
D[28]
D[30]
D[29]
A[20]
M1_RXD[0]
M1_RXD[1]
M1_RXD[2]
M1_RXD[3]
KEY_IN[0]
KEY_IN[1]
KEY_IN[2]
KEY_IN[3]
KEY_IN[4]
KEY_IN[5]
KEY_OUT[0]
KEY_OUT[1]
KEY_OUT[2]
KEY_OUT[3]
KEY_OUT[4]
KEY_OUT[5]
to JTAG
to LCD
to BK_LIT
8.1 VoIP BLOCK 
8.2 LCD CIRCUIT 
(2)
(3)
(4)
45
KX-NT265RU
17.2. Ethernet/Power block
 KX-NT265RU Ethernet/POWER block
0.1u/250V
C141
1000P/2kV
C137
DG
DG
C144
C134
NC
R114
NC
D3
NC
D3.3V
DC_ALARM
C138
0.1u/250V
C136
1000P/2kV
C142
PHY_nRST
M1_COL
M1_TXD[3-0]
M1_TXEN
M1_MDIO
M1_RXCLK
M1_CRS
M1_RXDV
M1_TXCLK
M1_RXER
M1_RXD[3-0]
M1_MDC
L113
L111
L110
L108
R131
75
R127
75
R130
75
R126
75
R110
49.9(1%)
C109 27p
C110
27p
X2
25MHz
R105
33
R122
68.1(1%)
R118
100k
(1/4W)
C146
100u/6.3V
C147
100u/6.3V
IC6
#TRPBF
1
NC1
2
RCLASS
3
NC3
4
VIN
5
VOUT
6
RWRGD
7
NC7
8
GND
R101
39
DG
DG
R108
6.49k(1%)
R100
1k
R111
49.9(1%)
R112
49.9(1%)
R113
49.9(1%)
RA100
39
R107
33
D1.8V
D11
1
23
4
D13
1
23
4
C145
10u/100V
C129
2.2u/100V
C122
K0.022u
C115
100u/6.3V
DG
C128
0.1u/250V
R117
100k
L103
100uH
C120
K0.022u
R116
10k
DG
DG
DG
DG
DG
DG
DG
DG
PHY2.5V
PHY2.5V
PHY2.5V
PHY2.5V
0
L101
PHY2.5V
C118
K0.1u
C119
K0.1u
C111
Z22u
DG
PHY2.5V
0
L102
PHY_nPD
DG
D1
4.7V
R106
100(1/4W)
IP1
250mA
R103
10k
R102
10k
R115
10k
IC10
1
CE
2
GND
3
NC
4
VDD
5
VOUT
C105
Z10u
C104
Z10u
AG_2
AG_2
DG
D8
100V/3A
D7
40V/2A
D6
40V/2A
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
D5.0V
D3.3V
PHY3.3V
0
L100
PHY3.3V
PHY3.3V
PHY3.3V
L105
L106
0
PHY_nIRQ
D5.0V
D1.8V
D3.3V
nDETPDN
PHY2.5V
DG
R109 1
D4
D5
100V/3A
D2
IC2
1
MDIO
2
MDC
3
RXD3/PHYAD1
4
RXD2/PHYAD2
5
RXD1/PHYAD3
6
RXD0/PHYAD4
7
VDDIO7
8
GND8
9
RXDV/PCS_LPBK
10 RXC
11 RXER/ISO
12 GND12
13
VDDC
14
TXER
15
TXC/REF_CLK
16
TXEN
17
TXD0
18
TXD1
19
TXD2
20
TXD3
21
COL/RMII
22
CRS/RMII_BTB
23
GND23
24
VDDIO24
25
INT#/PHYAD0
26
LED0/TEST
27
LED1/SPD100
28
LED2/DUPLEX
29
LED3/NWAYEN
30
PD#
31
VDDRX
32
RX-
33
RX+
34
FXSD/FXEN
35
GND35
36
GND36
37
REXT
38
VDDRCV
39
GND39
40
TX-
41
TX+
42
VDDTX
43
GND43
44
GND44
45
X0
46
X1
47
VDDPLL
48
RST#
IC9
1
VIN
2
VSS
3
CE
4
NC
5
VOUT
T1
TD+
1
TCT
2
TD-
3
NC4
4
NC5
5
RD+
6
RCT
7
RD-
8
RX- 9
RXCT 10
RX+ 11
NC12 12
NC13 13
TX- 14
TXCT 15
TX+ 16
IC5
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
R135
39
R136
33
R137
33
D3.3V
DG
AG
DG
A3.3V
D5.0V_1
D5.0V_1
C148
0.7F/2.5V
C149
0.7F/2.5V
C113 Z0.1u
C418
Z0.1u
C414
Z0.1u
C416
Z0.1u
C401
Z0.1u
C420
Z0.1u
C415
Z0.1u
C407
Z0.1u
C131
K0.01u
C402
Z0.1u
K0.01u
C132
C417
Z0.1u
C102
Z0.1u
C419
Z0.1u
C413
Z0.1u
C410
Z0.1u
C404
NC
C403
Z0.1u
C411
Z0.1u
C408
Z0.1u
C409
Z0.1u
C406
Z0.1u
C405
Z0.1u
C412
Z0.1u
C116
Z0.1u
C121
K0.01u
C108
K0.01u
K0.01u
C100
K0.01u
C154
K0.01u
C112
K0.01u
C101
Z0.1u
C106
Z0.1u
C130
C133
Z0.1u
C114
NC
C421
Z0.1u
C422
Z0.1u
C423
Z0.1u
C424
Z0.1u
C425
Z0.1u
C426
Z0.1u
C427
Z0.1u
C428
Z0.1u
C139
NC
0.047u/100V
C140
C143 NC
JK4
1
2
3
R120
0
R119
0
R133
0
R134
0
C430
Z0.1u
C431
Z0.1u
C432
Z0.1u
C433
Z0.1u
C434
Z0.1u
C435
Z0.1u
C437
Z0.1u
D3.3V_2
C150
100u/6.3V
DG
DG
DG
R138
1M
R139
120
R140
R141
R142
R143
C151
Z0.1u
C152
Z0.1u
DG
DG
C438
Z0.1u
C439
Z0.1u
C440
Z0.1u
C436
Z0.1u
D1.8V
DG
C441
Z0.1u
JK1
1
TX+
2
TX-
3
RX+
4
4
5
5
6
RX-
7
7
8
8
DCIN+
DCIN-
PoE+
PoE-
L114
L115
L116
L117
L118
C123
Z0.1u
C135
Z0.1u
C117
NC
L213
IC8
Vout
1
Vin
2
NC
3
Vss
4
C442
Z0.1u
DG
AG
C443
Z0.1u
C107
NC
C103
Z0.1u
C153
NC
M1_TXD[0]
M1_TXD[1]
M1_TXD[2]
M1_TXD[3]
M1_RXD[0]
M1_RXD[1]
M1_RXD[3]
M1_RXD[2]
DC_JACK
EtherJACK
(LAN)
8.5   POWER  SUPPLY  CIRCUIT
8.4   Ethernet   CIRCUIT
(5)
(7)
(6)
(10)
(11),(12)
(11),(12)
(8),(9)
(8),(9)
KX
-N
T
265
RU
46
17.3. ANALOG/KEY/LED block
KX-NT265RU  ANALOG/KEY/LED block
HANDSET 
HANDSET 
HEADSET 
HEADSET 
SP PHONE 
SP PHONE 
HS_IN
K1u
C247
CN3
1
2
MUTE_SP1
MIC_SW
LED_CO2_R
DG
LED_DIAL
KEY_OUT[5-0]
KEY_IN[5-0]
LED_SP
A3.3V
LED12
LED_C002
LED13
LED_C001
LED3
RED
LED_AUTODIAL
LED5
RED
LED_SPPHONE
LED9
LED_C005
LED11
LED_C003
LED10
LED_C004
LED8
LED_C006
LED6
LED_C008
LED7
LED_C007
D3.3V
JK3
1
1
2
2
3
3
4
4
C227
1000p
R224
20k
R225
10k
C216
K0.047u
R217
12k
R215
330k
L205
L204
L206
C236
K0.022u
C246
K10u
R247
560
R234
10k
R233
10k
R237
20k
R240
12k
C241
2200p
R200
10k
SP_CLK
D3.3V
DG
SP_DATA
SP_LCK
R201
10k
D3.3V
DG
DG
DG
DG
DG
DG
R208
15k
+
-
+
-
IC14
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
C205
2200p
R209
15k
C201
K0.1u
Q7
E
C
B
DG
C242
4700p
L207
R242
1k
C248
Z22u
+
-
+
-
IC18
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
R241
10k
R235
10k
1k
R244
R231
180k
R236
180k
R243
1k
C239
K0.047u
C244
K0.047u
R232
10k
R230
150k
C233
470p
C240
K0.1u
R238
20k
R239
10k
R245
1.8k
R246
2.2k
C249
Z22u
R227
1k
R228
2.2k
C224
Z22u
IC16
1
COM
2
INH
3 GND3
4
GND4
5
A
6
Y1
7
Y0
8
VCC
C235
K0.047u
JK2
1
2
3
4
5
IC19
1
V
O
UT1
2
VIN1
3
Bypass
4
GND
5
SHUTDO
WN
6
VIN2
7
V
O
UT2
8
VDD
R204
1.2k
R205
1.2k
R206
1k
C243
Z10u
C237
NC
RA200
820
RA202
100
RA201
820
LED_CO1_R
LED_CO1_G
LED_CO2_G
C206
1000p
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
D3.3V
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
HS_OUT
CN6
1
2
3
4
AG
CN7
1
2
3
4
AG
C234
560p
L208
AG
+
-
+-
IC15
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
C212
100p
AG
C214
Z10u
DG
3.3(1/4W)
L200
AG
330u/4V
C255
D3.3V
A3.3V
A3.3V
R223
15k
AG
+
-
+-
IC17
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
AG
AG
C220
NC
R220
0
C217
1000p
C222
2200p
R221
15k
C215
NC
C221
NC
R222
0
R214
0
HSOUTNS
AG
C207
1000p
AG
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
C210
NC
A3.3V
R213
10k
R212
10k
R211
10k
AG
R248
150
LED_ANS
LED_MES_R
LED_ICM
R203
180
R202
180
AG_2
A1
A2
A4
A3
A0
B4
B2
B0
B5
B3
B1
A3.3V
MIC3
IC13
1 VSS
2 DATA
3 CLOCK
4 LCK
5 Q0
6 Q1
7 Q2
8 Q3
9 Q4
10 Q5
11
Q6
12
NC12
13
NC13
14
Q7
15
Q8
16
Q9
17
Q10
18
Q11
19
OE_B
20
VDD
Q2
1
2
3
4
5
Q3
1
2
3
4
5
Q4
1
2
3
4
5
Q5
1
2
3
4
5
SW8
AUTODIAL
SW4
DOWN
SW13
AUTOANS
SW21
CO3
SW14
INTERCOM
SW25
SP_PHONE
SW6
CO6
SW7
PROGRAM
SW30
CO1
SW11
CO5
SW2
CO8
SW9
UP
SW26
CO2
SW1
CO7
SW12
TRANS
SW16
CO4
LED2
RED
LED_AUTOANS
LED1
GREEN
LED_INTERCOM
AG
AG3
SW28
8
SW18
2
SW23
5
SW17
3
SW33
*
SW29
7
SW31
#
SW22
6
SW32
0
SW19
1
SW24
4
SW27
9
SW20
HOLD
SW10
REDIAL
SW5
HOOK
SW3
MESSAGE
SW15
FLASH
C200
Z0.1u
C208
K0.01u
C245
K0.01u
C209
K0.01u
C223
K0.01u
C226
K0.01u
C203
K0.01u
C232
K0.01u
C238
Z0.1u
C204
2200p
C202
K0.1u
R210
15k
R207
15k
MIC_IN
AG
C218
K0.047u
MUTE_SP0
R216
15k
100u/6.3V
C256
L202
SP_OUT
SP3P
D3.3V
SP3M
CN4
1
2
R219
15k
C228
2200p
3.3
L203
C211
2200p
R229
68k
R226
10k
C230
K0.01u
L201
IC11
1 SHUTDOWN
2 BYPASS
3 +IN
4 -IN
5
Vo1
6
VDD
7
GND
8
Vo2
AG
AG
C213
1000p
AG
C225
Z0.1u
R249 100
R250
100
R251
150
R252
150
Q8
E
C
B
AG
R253
2.7k
MUTE_SP2
C229
330p
C258
33p
AG
C257
33p
AG
C231
330p
AG
C259
Z0.1u
A3.3V
L209
R254
R255
SP2
MIC2
DG
L210NC
C260
k0.01u
AG
C251
1000p
C250
1000p
AG
AG
AG
C253
K0.01u
AG
C252
K0.01u
MIC1-
SP1
MIC1+
AG
C254
1000p
L211
L212
AG
DG
C261
Z0.1u
R256
0
L214NC
LED4
LED_MESSAGE_R
KEY_OUT[2]
KEY_IN[2]
KEY_OUT[0]
KEY_IN[1]
KEY_IN[0]
KEY_IN[5]
KEY_IN[4]
KEY_OUT[3]
KEY_IN[3]
KEY_OUT[4]
KEY_OUT[1]
KEY_OUT[5]
to MIC
G
G
R
R
G
G
G
R
G
R
G
R
R
G
R
R
to SP
8.8   LED  CIRCUIT
8.6    ANALOG  CIRCUIT
(IC1-pin115)
(IC1-pin112)
(IC1-pin116)
(IC1-pin113)
8.7    KEY INPUT CONTROL  CIRCUIT
(13)
Handset
Reception Signal
SpeakerPhone
Reception Signal
Handset
Transmission Signal
Headset
Transmission Signal
SpeakerPhone
Transmission Signal
Headset
Reception Signal
On using
the speaker phone
KX
-N
T
265
RU
47
17.4. WAVEFORM
 
IC7 pin2 VDD 
IC7 pin1 nRESET 
IC1 pin34 XTAL1 
 
IC1 pin46 DRCLK  
CN5 pin4 RS/STB 
CN5 pin6 DATA/RW 
CN5 pin5 SCK/E 
CN5 pin3 V0 
IC2 pin45 X0 
 
IC5 pin3 RST 
IC5  pin2 SW 
IC5 pin9 FB 
D5.0V 
(1) RESET SIGNAL
(2) X1    8.192MHz
(3) IC1  DR clock  
(4) LCD CIRCUIT
(5) X2    25MHz
(6) IC5 switching regulator
48
KX-NT265RU
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