Panasonic KX-NT543RU / KX-NT543RU-B / KX-NT546RU / KX-NT546RU-B (serv.man2) Service Manual ▷ View online
53
KX-NT543RU/KX-NT543RU-B/KX-NT546RU/KX-NT546RU-B
+
-
+
-
6
5
8
7
C
E
B
A
D
F
OPE_VCC
003
ASICCLK
001
ASICRST
001
INT0
001
I2C_SDA
001
I2C_SCL
001
AG2
MICBIAS2
R144
2.2k
MICBIAS2
AG2
AG2
HEADSET_SPOUT
001
HEADSET_MIN
001
C164
33p
AG2
OPBIAS2
DG
AG2
R147
NC
MICBIAS2
OPBIAS2
5V
DG
AG2
AG2
R143
330
R148
4.7k
HESMIC2
HESSPOUT2
IC105
4
GND
8
VCC
5
6
7
IC105
3
2
1
C168
0.47u
R142
12k
C161
10p
C165
10p
C171
1u
C163
0.1u
0.1u
C136
0.1u
C173
10u
C169
10u
AG2
L111
C167
NC
C166
NC
C170
NC
L112
C178
1000p
AG2
5V
L113
L114
R137
470
R155
470
C160
1u
CN101
1
2
3
4
5
6
7
8
9
10
11
12
C187
1000p
AG2
3.3V
R157
100
C172
22u
R140 68k
R141
68k
R149
2.7k
L116
L117
KX-NT543
RU/KX-NT546RU MAIN BOARD No.4 2/2
17 ASICCLK
17 I2CSDA
17 I2CSCL
17 ASICRST
54
KX-NT543RU/KX-NT543RU-B/KX-NT546RU/KX-NT546RU-B
12.5. Ope
(1)
(2)
(3)
(6)
(4)
(8)
(9)
(9)
(11)
(5)
(7)
(10)
(12)
(13)
(15)
(14)
KX-NT543
RU/KX-NT546RU OPERATION BOARD 1/2
C
E
B
A
D
F
3
2
4
KEYIN0
KEYIN1
KEYIN1
ASIC_CLK
LED_BELL_R
LED_BELL_G
INT0
ASIC_RST
I2C_SCL
I2C_SDA
LED_STB2-R
LED_STB3-R
LED_STB3-R
LED_STB7-R
LED_STB7-R
LED_STB6-R
LED_STB4-R
LED_STB6-R
LED_STB5-R
LED_STB5-R
LED_STB2-R
LED_STB3-R
LED_STB3-R
LED_STB2-R
LED_STB4-R
LED_STB6-R
LED_STB1-R
LED_STB4-R
LED_STB3-R
LED_STB4-R
LED_STB5-R
LED_STB4-R
LED_STB2-R
LED_STB0-R
HEADSET_MIC
LED_STB0-R
LED_STB5-R
LED_STB1-R
HEADSET_DET
LED_STB5-R
LED_STB2-R
LED_STB4-R
LED_STB3-R
LED_STB4-R
LED_STB2-R
LED_STB5-R
LED_STB5-R
Vraw
EHS_DATA
ASIC_CLK
AG
AG
AG
EHS_DET
LED_COM3
LED_COM3
LED_COM4
LED_COM4
LED_COM1
LED_COM4
LED_COM1
LED_COM2
LED_COM2
LED_COM4
LED_COM4
LED_COM4
LED_COM4
EHS_TX
EHS_RX
C241 0.1u
R221
NC
3.3V
C221
NC
C223 18p
C217
22u
C218
22u
C224 18p
EHS_RX
EHS_TX
R210
10k
DG
3.3V
JK203
2
3
1
4
5
C202
0.1u
IC204
1
2
3
4
R208
10k
C210
NC
EHS_DET
EHS_DET
R220 330
JK202
1
4
2
3
5
Q202
R201
1k
R230
22
R231
22
C226
330p
C205
1000p
DG
AG_PAD
D245
21
D247
21
D246
21
J235
J213
J209
J203
J222
J232
J234
J233
J229
J217
J227
J210
J220
J211
J223
J230
J208
J231
J218
J221
J215
J202
J205
J259
J262
J224
J212
J207
J228
J214
J219
J216
J265
J272
J226
J201
J225
J206
J204
R228
0
L210
L209
L208
5V
5V
R226
330
R209 150
R222
NC
C204
10u
C213
4.7u
R254
10k
CN205
1
2
3
4
5
6
7
8
9
10
11
12
AG
AG
AG
AG
AG
AG
AG
R253
33k
D206
D244
Q203
4.7k
10k
Q201
HOOK_SW
1
2
C207
NC
R223
2.7k
J275
J276
NC
L212
AG
HEADGND
HEADGND
HEADGND
HEADGND
HEADGND
HEADGND
IC203
1
2
3
5
4
IC202
1
2
3
5
4
C215
C244
NC
J258
J260
J261
J266
J264
J245
J247
J249
J251
J270
J271
J267
J268
17 ASICRST
17 I2CSCL
17 ASICCLK
17 I2CSDA
18 EHSTX
55
KX-NT543RU/KX-NT543RU-B/KX-NT546RU/KX-NT546RU-B
(1)
(2)
(3)
(6)
(4)
(8)
(9)
(9)
(11)
(5)
(7)
(10)
(12)
(13)
(15)
(14)
KX-NT543
RU/KX-NT546RU OPERATION BOARD 2/2
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
C
E
B
A
D
F
6
5
8
7
LED_COM6
LED_STB0
LED_STB1
LED_STB5
LED_STB4
LED_STB4
LED_STB2
LED_STB3
LED_STB7
KEYIN6
KEYIN5
KEYIN3
KEYIN4
LED_STB6
LED_COM0
LED_STB0
LED_STB1
LED_STB2
LED_STB3
LED_STB4
LED_STB5
LED_STB6
LED_COM7
I2C_SDA
I2C_SCL
ASIC_RST
KEYIN2
KEYIN3
KEYIN4
KEYIN5
KEYIN6
KEYIN7
LED_STB3
LED_STB1-R
LED_STB3
LED_STB0
LED_STB1
LED_BELL_R
LED_STB1
LED_STB0
LED_STB2-R
LED_STB5-R
LED_STB4-R
HOOKSW
3.3V
LED_STB2
LED_STB3-R
LED_STB2
HOOKSW
LED_STB0
LED_STB1
LED_STB2
LED_STB3
LED_STB4
LED_STB5
LED_STB6
LED_STB7
5V
3.3V
LED_BELL_R
LED_BELL_G
INT0
INT0
LED_COM0
LED_COM2
LED_COM1
LED_COM3
LED_COM5
LED_COM6
LED_COM7
LED_COM4
LED_STB7
KEYIN0
KEYIN1
KEYIN2
LED_COM5
LED_COM4
LED_COM4
LED_COM2
LED_COM1
LED_COM3
KEYIN7
D232
CO13
3
4
1
2
D225
CO15
3
4
1
2
D217
CO17
3
4
1
2
D209
CO19
3
4
1
2
D228
CO21
3
4
1
2
D220
CO23
3
4
1
2
D224
CO22
3
4
1
2
D231
CO20
3
4
1
2
D229
CO14
3
4
1
2
D216
CO24
3
4
1
2
D221
CO16
3
4
1
2
D213
CO18
3
4
1
2
D222
CO9
3
4
1
2
D230
CO7
3
4
1
2
D227
CO1
3
4
1
2
D214
CO11
3
4
1
2
D219
CO3
3
4
1
2
D211
CO5
3
4
1
2
D218
CO10
3
4
1
2
D226
CO8
3
4
1
2
D223
CO2
3
4
1
2
D210
CO12
3
4
1
2
D215
CO4
3
4
1
2
D233
CO6
3
4
1
2
DG
*
1
2
FLASH/RECALL
1
2
SOFT3L
1
2
9
1
2
MESSAGE
1
2
1
1
2
HOLD
1
2
ENTER
1
2
SOFT3R
1
2
REDIAL
1
2
0
1
2
7
1
2
SOFT4L
1
2
SOFT2R
1
2
SOFT1L
1
2
#
1
2
5
1
2
SOFT1R
1
2
FWD/DND
1
2
INT'COM
1
2
3
1
2
CONF
1
2
SOFT4R
1
2
8
1
2
6
1
2
SOFT2L
1
2
TRANSFER
1
2
4
1
2
2
1
2
PAUSE
1
2
C243
10n
DG
C201
0.1u
3.3V
R242
33
R248
33
R246
33
R244
33
C203
0.1u
CO24
1
2
CO18
1
2
CO15
1
2
CO7
1
2
CO1
1
2
CO9
1
2
CO23
1
2
CO8
1
2
CO20
1
2
CO16
1
2
CO19
1
2
CO2
1
2
CO14
1
2
CO5
1
2
CO22
1
2
CO3
1
2
CO17
1
2
CO6
1
2
CO11
1
2
CO21
1
2
CO10
1
2
CO13
1
2
CO12
1
2
CO4
1
2
SP-PHONE1
1
2
IC205
1
CLKIN
12
KEYIN2
13
KEYIN3
23
LED_COM3
34
LED_COM6
14
KEYIN4
15
KEYIN5
16
KEYIN6
17
KEYIN7
18
VSS2
19
VDD2
20
LED_COM0
21
LED_COM1
22
LED_COM2
24
LED_STB0
25
LED_STB1
26
LED_STB2
27
LED_STB3
28
LED_STB4
29
LED_STB5
30
LED_STB6
31
LED_STB7
32
LED_COM4
33
LED_COM5
35
LED_COM7
36
VDD3
37
VSS3
38
INT_OUT0
39
INT_OUT1
40
TEST
41
RESET
42
SCS
43
SCLK
44
SDI
2
CLKOUT
3
VDD1
4
VSS1
5
SDO
6
GKEYIN0
7
GKEYIN1
8
PSBIN
9
PSBOUT
10
KEYIN0
11
KEYIN1
D234
SP-PHONE
A
D235
D238
D239
D237
D236
D240
D241
J252
J242
J255
J240
J237
J246
J244
J273
J254
J243
J253
J256
J257
J239
J250
J274
J263
J248
J241
J269
J238
J236
RA201
4.7k
1
2
3
45
6
7
8
R249
4.7k
R250
4.7k
R251
4.7k
R252
4.7k
C211
4.7u
DG
D249
D248
3.3V_L
Q204
R245
150
R243
150
R241
150
R247
150
R202
220
R255
1k
R203
68
RIGHT
1
2
LEFT
1
2
UP
1
2
DOWN
1
2
L211
3.3V_L
R256
NC
R257
1k
R258
1k
R259
1k
R260
1k
R261
1k
R262
1k
R263
1k
R264
1k
Q205
Q206
Q207
Q208
Q209
Q210
Q211
DG
Q212
DG
DG
DG
DG
R265
NC
R266
NC
R267
NC
R268
NC
R269
NC
R270
NC
R271
NC
R272
NC
DG
D242
MUTE
1
2
STORE
1
2
CANCEL
1
2
D254
INT'COM
3
4
1
2
D251
STORE
D250
MUTE
D253
FWD
D252
CONF
17 ASICRST
17 I2CSCL
17 I2CSDA
17 ASICCLK
18 EHSRX
56
KX-NT543RU/KX-NT543RU-B/KX-NT546RU/KX-NT546RU-B
12.6. Waveform
12.6.1. No.(1)-(6)
RESET SIGNAL
IC505 pin2 3.3V
IC505 pin4 RESET
X501 25MHz
X501 (IC501 pinL1 side)
IC401 pin14 ECLK
Flash(IC504) SIGNAL
IC504 pin1 RESET
IC504 pin16 SCLK
IC504 pin7 CS
IC504 pin8 SO
LCD SIGNAL
CN504 pin3 SO
CN504 pin4 LCDA0
CN504 pin5 LCDRST
CN504 pin6 LCDCS
SDRAM SIGNAL
IC503 pin38 SDCLK
IC503 pin19 CS
IC503 pin23 A0
IC503 pin2 XD0
PoE Switching Regulator SIGNAL
Q401 G pin4
1
2
3
4
5
6
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