Panasonic KX-NT136RU Service Manual ▷ View online
120
R137
B5
1K
R145
A6
Q6
1
2
3
4
5
DG
TP520
18
R138
TP506
A4
Q7
1
2
3
4
5
D119
LED_CO19
120
R141
D122
LED_CO22
A5
TP504
Q5
1
2
3
4
5
Q14
E1 1
B1
2
C2
3
E2 4
B2
5
C1
6
1.2K
RA2
1
2
3
4
2
3
4
5
6
7
8
18
R144
A1
B3
CN7
1
2
3
4
5
6
7
8
9
18
R140
TP522
TP518
DG
1K
R146
TP507
270
R149
D3.3V
D3.3V
Q12
E1 1
B1
2
C2
3
E2 4
B2
5
C1
6
D114
LED_CO14
120
R139
TP491
TP492
TP493
TP492
TP493
TP494
Q13
E1 1
B1
2
C2
3
E2 4
B2
5
C1
6
TP495
CN8
1
2
3
4
TP508
D120
LED_CO20
B4
D127
LED_CONF
D110
LED_CO10
D104
LED_CO4
B0
A0
D115
LED_CO15
D121
LED_CO21
TP519
B2
A2
D124
LED_CO24
D101
LED_CO1
D112
LED_CO12
D108
LED_CO8
D113
LED_CO13
D106
LED_CO6
D111
LED_CO11
120
R143
D109
LED_CO9
D105
LED_CO5
D107
LED_CO7
D102
LED_CO2
D103
LED_CO3
D117
LED_CO17
D123
LED_CO23
D118
LED_CO18
D116
LED_CO16
TP505
1K
R147
TP490
1.2K
R135
1.2K
R136
Q8
1
2
3
4
5
1K
R148
A3
TP521
TP503
18
R142
TP502
TP497
TP496
TP501
A7
TP499
TP498
B1
TP500
Q9
1
2
3
4
5
Q10
1
2
3
4
5
Q11
1
2
3
4
5
D128
LED_AUTODIAL
D126
LED_FWD/DND
D125
LED_AUTOANS
D129
LED_INTERCOM
A8
TP523
C
E
B
A
D
F
6
5
7
8
10u
C526
0.01u
C538
DG
NC
C537
DG
0.01u
C521
DG
0.01u
C524
0.01u
C527
NC
C525
0.01u
C528
0.01u
C531
0.01u
C530
DG
C_LED[0]
C_LED[1]
C_LED[2]
C_LED[3]
C_LED[4]
C_LED[5]
C_LED[6]
C_LED[7]
R_LED[1]
R_LED[3]
R_LED[0]
R_LED[0]
R_LED[2]
R_LED[4]
R_LED[5]
C_LED[8]
LED_CONF
KEYIN[6]
KEYIN[4]
KEYOUT[3]
KEYIN[5]
KEYOUT[2]
KEYOUT[1]
KEYOUT[0]
LED_FWD
LED_ANS
LED_DIAL
LED_ICM
R
G
R
R
R
G
R
G
R
G
G
R
R
G
R
G
G
G
G
G
R
R
G
R
G
R
R
G
R
G
R
G
R
G
R
R
G
R
G
G
R
R
G
G
G
G
R
G
R
to KEY BOARD
to LED BOARD
(1)
(2)
KX-NT136RU MAIN NO.4 (SUB-CPU Block) (2/2)
61
KX-NT136RU
17.6. POWER SUPPLY
KX-NT136RU POWER SUPPLY BOARD
R303
68.1ohm
D308
8.2V
DG
DG
IC302
1 NC
2 RCLASS
3 NC
4 VIN
2 RCLASS
3 NC
4 VIN
5
VOUT
6
nPWRGD
7
NC
8
GND
RCLASS
48V
3.8V
DCIN2-
DCIN2+
DCIN+2
CAPIN48V
CAPOUT
XCIN
POWERFAIL
CN302
1
48VPLUS
2
48VPLUS
3
4
NC
NC
5
48VMINS
6
48VMINS
7
GND
8
GND
9
GND
10
GND
11
GND
12
GND
13
D3.8V
14
D3.8V
15
D3.8V
16
D3.8V
17
D3.8V
18
POWERFAIL
CAPIN
IC301
1 GND
2 SW
3 NC
4 VIN
5 NC
6 BOOS T
7 NC
8 GND
2 SW
3 NC
4 VIN
5 NC
6 BOOS T
7 NC
8 GND
9
GND
10
BIAS
11
VC
12
FB/SEN
13
NC
14
SYNC
15
nSHDN
16
GND
R304
4.7K
R305
10K
nSHDN
VC
FB
VC2
SW
BOOST
D309
8.2V
GND
L302
2 3
1 4
IC303
2
Vss
1
Vout
3
Vin
D307
D301
90V/3
A
D303
90V/3A
D306
D302
90V/3A
D304
90V/3
A
D305
L301
47uH
R307
470(1/4W
)
R311
NC
R306
100K(1/4W)
R302
3.3K
R301
10K(1/2W)
C310
2.2u/100V
C312
2.2u/100V
C311
2.2u/100V
C304
10u/10V
C302
0.01u
C308
220p
C306
0.22u/16V
C305
0.33u/16V
C309
2.2u/100V
C303
100u/6.3V
C301
0.22F/9V
L303
JK301
1
DCIN+
2
DCIN-
DCIN+
DCIN-
C307
0.1u/50V
48VPLUS
48VMINS
L304
J301
DC_JACK
16
KX
-N
-N
T
136
RU
62
17.7. WAVEFORM
1 RESET SIGNAL
2 IC1 25MHz master clock
3 IC7 32.768MHz CODEC clock
4 IC13 10MHz SUB-CPU clock
5 LCD CN2 communication waveform
6 IC1 and IC12 serial communication waveform
IC13 pin4 10MHz
IC12 pin99 nCS
IC12 pin97 CLK
IC12 pin98 DO
IC12 pin96 DI
CN2 pin3 A0
CN2 pin1 nCS
CN2 pin4 CLK
CN2 pin5 DO
IC5 pin2 VDD
IC5 pin1 nRESET
IC1 U10 REFCLK
IC7 pin22 32.768MHz
KX
-N
-N
T
136
RU
63
7 IC12 LAN port Ethernet communication waveform
(100Mbps)
(100Mbps)
8 LAN port(JK3) Ethernet communication waveform
(100Mbps) [using differential probe]
(100Mbps) [using differential probe]
9 LAN port(JK3) Ethernet communication waveform
(10Mbps) [using differential probe]
(10Mbps) [using differential probe]
10 IC12 PC port Ethernet communication
waveform (100Mbps)
waveform (100Mbps)
11 PC port(JK2) Ethernet communication waveform
(100Mbps) [using differential probe]
(100Mbps) [using differential probe]
12 PC port Ethernet(JK2) communication waveform
(10Mbps) [using differential probe]
(10Mbps) [using differential probe]
IC12 pin49 TXM1
IC12 pin48 TXP1
IC12 pin46 RXM1
IC12 pin45 RXP1
IC12 pin56 TXM2
IC12 pin55 TXP2
IC12 pin53 RXM2
IC12 pin52 RXP2
Between pin1 and pin2
Between pin3 and pin6
Between pin1 and pin2
Between pin3 and pin6
Between pin1 and pin2
Between pin3 and pin6
Between pin1 and pin2
Between pin3 and pin6
KX
-N
-N
T
136
RU
64
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