Panasonic KX-NT343RU (serv.man2) Service Manual ▷ View online
45
KX-NT343RU/KX-NT343RU-B
KX-NT343
RU/KX-NT343RU-B MAIN No.3 (2/2)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
D
F
E
C
B
A
7
6
5
8
+
-
+-
A3.3V
IC20
1
VOUT1
2
VIN1
3
Bypass
4
GND
5
SHUTDOWN
6
VIN2
7
VOUT2
8
VDD
R339
10k
AG
A3.3V
AG
C343 K1
R327
2.2k
AG
IC24
1
AO
2
A-
3
A+
4
GND
5
B+
6
B-
7
BO
8
VCC
D3.3V
C333
Z22
Z22
AG
AG
AG
Q1
E
C
B
R348
2.7k
AG
MUTE_SP2
R345
560
AG
AG
A3.3V
R326
1k
C344
K10
R346
150
A3.3V
R337
10k
R338 10k
C346
Z10
Z10
C350
Z22
Z22
A3.3V
AG
R341
1k
R340
1k
R343
1.8k
AG
A3.3V
R344
2.2k
C351
Z22
Z22
R342
1k
1k
AG
A3.3V
R347
100k
100k
AG
HEADSET
L302
AG
L304
L303
SP1
AG
AG
L301
AG
D8
4.7V
4.7V
AG
L305
AG
SP2_2
L306
AG
MIC2_2
AG
L307
R325
3.3
3.3
Q3
E
C
B
C339
K0.01
C355
K0.01
C356
K0.01
C340
K0.01
C358
1000p
1000p
C353
1000p
C338
1000p
C354
1000p
R350
R349
HD_AG
HS_SP
HD_DET
HD_MIC
HS_MIC-
HD_SP
HS_AG
HS_MIC+
IC29
8
4
2
3
3
AG
A3.3V
C360
Z0.1
C361
Z0.1
A3.3V
AG
IC30
8
4
2
3
3
AG
A3.3V
C352 Z0.1
AG
A3.3V
C357
Z0.1
AG
AG
A3.3V
C359
Z0.1
AG
MIC1+
MIC1-
IC26
16
6
7
8
8
IC27
16
6
7
8
8
IC28
16
6
7
8
8
IC28
10
S1
15
BN
1
B1
2
B0
IC27
10
S1
15
BN
1
B1
2
B0
IC26
11
S0
14
AN
13
A1
12
A0
IC26
10
S1
15
BN
1
B1
2
B0
IC27
11
S0
14
AN
13
A1
12
A0
CN4
1
2
CN5
1
2
R331 56k
C336 820p
C337 680p
R329
180k
C334 330p
L308
L309
MIC3
SP3P
SP3M
C362
220/6.3V
220/6.3V
C332
K0.1
L310
C363
33p
C364
33p
R333
56k
R334
56k
56k
R332
56k
R335
18k
R336
12k
C335 220p
C345
390p
C342
390p
C341
390p
C348
K0.22
C349
K0.22
C347
K0.22
R330
39k
R328
33k
to SP
to MIC
to CN1
Handset
to CN1
Headset
L:OFF
H:MUTE
H:MUTE
L:NC
H:Headset DET
H:Headset DET
46
KX-NT343RU/KX-NT343RU-B
10.5. Main No.4
KX-NT343
RU
/KX-NT343
RU
-B MAIN No.4 (1/4)
1/4
(a)
(b)
(c)
(d)
(f)
(h)
(j)
(m)
(p)
(r)
(t)
(u)
(w)
(e)
(g)
(i)
(k)
(n)
(q)
(s)
(v)
(z)
(x)
(y)
(A)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
C_LED10
C_LED9
C_LED8
C_LED7
C_LED1
C_LED2
C_LED3
C_LED4
C_LED5
C_LED6
C_LED7
C_LED8
C_LED9
C_LED10
R_LED1
R_LED2
R_LED3
R_LED4
R_LED5
R_LED6
KEYIN8
KEYIN7
KEYIN6
KEYIN5
KEYIN4
KEYIN3
KEYOUT1
KEYIN1
KEYIN2
D3.3V
DG
Q4
1
2
3
4
5
Q5
1
2
3
4
5
RA26
1k
RA28
1k
SW20
CO20
SW6
CO6
SW10
CO10
SW22
CO22
SW1
CO1
SW13
CO13
SW2
CO2
SW19
CO19
SW21
CO21
SW9
CO9
SW16
CO16
SW3
CO3
SW14
CO14
SW5
CO5
SW18
CO18
SW12
CO12
SW7
CO7
SW8
CO8
SW24
CO24
SW23
CO23
SW11
CO11
SW4
CO4
SW15
CO15
SW49
SPPHONE
SW17
CO17
R201
120
LED27
CONF
LED28
STORE
LED30
FWD
LED29
MUTE
LED25
SPPHONE
LED14
CO14
LED15
CO15
LED23
CO23
LED22
CO22
LED18
CO18
LED19
CO19
DG
DG
SW32
8
SW52
DOWN
SW27
3
SW54
RIGHT
SW50
CANCEL
SW51
UP
SW25
1
SW31
7
SW34
*
SW48
SELF
SW47
REDIAL
SW29
5
SW44
HOLD
SW36
#
SW46
PAUSE
SW55
ENTER
SW28
4
SW41
STORE
SW45
MESSAGE
SW53
LEFT
SW26
2
SW30
6
SW40
FWD
SW43
FLASH
SW39
MUTE
SW42
TRANS
SW35
0
SW33
9
SW56
HOOK
SW57
DG
R211
NC
DG
R215
33k
R228
33k
R203
180
SW38
INT
SW37
CONF
LED26
INT
DG
R200
68
R202
82
R204
47
R
G
R
R
G
R
GG
R
G
R
G
Hi :Option
Low:IP-PT
RR
R
R
R
Hi :Self labeling
Low:Sub
R
G
D
C
B
A
45
6
23
1
47
KX-NT343RU/KX-NT343RU-B
KX-NT343
RU
/KX-NT343
RU
-B MAIN No.4 (2/4)
2/4
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(B)
(C)
(D)
C_LED6
C_LED5
C_LED4
C_LED3
C_LED2
C_LED1
R_LED1
R_LED2
R_LED3
R_LED4
R_LED5
R_LED6
DG
Q6
1
2
3
4
5
Q7
1
2
3
4
5
Q8
1
2
3
4
5
DG
DG
LED1
CO1
LED2
CO2
LED13
CO13
LED3
CO3
LED16
CO16
LED4
CO4
LED12
CO12
LED11
CO11
LED24
CO24
LED10
CO10
LED21
CO21
LED9
CO9
LED6
CO6
LED17
CO17
LED5
CO5
LED20
CO20
LED8
CO8
LED7
CO7
Q9
1
6
2
4
3
5
Q10
1
6
2
4
3
5
4
3
5
Q11
1
6
2
R214
NC
DG
D3.3V
R216
NC
R209
180
R205
180
R207
180
D3.3V_2
DG
AG
A3.3V
D3.3V
C400
Z0.1
C401
Z0.1
C402
Z0.1
C403 Z0.1
DG
DG
AG
C404
NC
D3.3V
C405 NC
L2
NC
AG
A3.3V
C406
Z0.1
C407
Z0.1
C408
Z0.1
C409
Z0.1
C410 Z0.1
C411 Z0.1
C412 1000p
C413 1000p
C414
1000p
R206
47
R208
47
R210
47
R
R
G
R
G
G
G
G
RR
G
R
R
RR
R
R
G
G
R
G
G
G
R
G
G
G
R
G
RR
G
G
RR
G
Low:IP-PT
Hi :Self labeling
Low:Sub
Hi :Option
F
E
H
G
45
6
23
1
48
KX-NT343RU/KX-NT343RU-B
KX-NT343
RU
/KX-NT343
RU
-B MAIN No.4 (3/4)
3/4
(11)
(12)
(a)
(b)
(c)
(d)
(f)
(h)
(j)
(m)
(p)
(r)
(t)
(u)
(w)
(e)
(g)
(i)
(k)
(n)
(q)
(s)
(v)
(z)
(x)
(y)
(A)
KEYIN1
KEYIN2
KEYIN3
KEYIN4
KEYIN8
KEYIN5
KEYIN6
KEYIN7
DG
D3.3V
D3.3V
DG
DG
R223
1M
DG
D10
R226
470
D9
DG
DG
D3.3V
DG
DG
D3.3V
DC_ALARM
RXD_SUB
PCMIN
RESET
TXD
SCLK_SUB
PCMOUT
PCMSYNC1
PCMCLK
RA29
33
D3.3V
-1.2
C207
Z0.1
C208
Z0.1
C200
Z0.1
C203
Z0.1
C221
Z0.1
C205
K0.01
C202
K0.01
R218
33
R217
33
R213
33
R219
NC
R220
33k
IC19
24
IC19
5
3
1
X3
9.830MHz
1
2
3
R224
NC
R225
NC
DG
V5
R212
33k
D3.3V
D3.3V
RA30
33k
DG
RA27
1k
DG
RA31
33k
C209
Z1/16V
24
MW_COM
5
PIO1
21
LCD_DATA
12
UART_CTS
6
PIO3
25
MW_R
9
UART_TX
10
UART_RX
8
RESET
27
GND
2
KEY1_2
1
BK_LIT
14
PCMOUT
3
KEY3_4
11
UART_RTS
7
PIO2
30
VDD
17
LCD_CS
20
LCD_SCK
26
MW_G
18
LCD_RES
28
GND
22
-1.2V
4
PIO0
19
LCD_A0/LCD_MODEL
15
PCMIN
13
PCMSYNC
16
PCMCLK
23
V5
CN9
29
VDD
R230
180
IC4
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
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
to LCD board
Low:Disable
Hi :Enable
D
C
B
A
8
7
11
10
9
(4)
(20)
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